UM0585 User manual. STM32F10xxx DSP library. Introduction
|
|
|
- Basil Bruce
- 6 years ago
- Views:
Transcription
1 User manual STM32F10xxx DSP library Introduction This user manual describes the STM32F10xxx DSP (digital signal processing) library, which is a suite of common digital signal processing functions: PID controller Fast Fourier transform FIR and IIR filters The library contains C and assembly functions that have been ported and tested on the IAR EWARM 5.20, Keil RVMDK 3.23 and Raisonance RIDE7 (GNU compiler) toolchains. October 2008 Rev 1 1/23
2 Contents UM0585 Contents 1 DSP Library description PID controller Description DSP library functions DoPID function DoFullPID function PID_stm32 function Complex 16-bit radix-4 FFT Description DSP library functions cr4_fft_64_stm32 function cr4_fft_256_stm32 function cr4_fft_1024_stm32 function FFT performance improvement bit FIR filter Description DSP library function fir_16by16_stm32 function bit IIR filters Description DSP library functions iiarma_stm32 function iir_biquad_stm32 function STM32F10xxx DSP library benchmark Function code footprint Function execution time PID controller Fast Fourier transform (FFT) FIR filter /23
3 Contents IIR filters Conclusion Revision history /23
4 List of tables UM0585 List of tables Table 1. STM32F10xxx DSP library functions Table 2. DoPID function Table 3. DoFullPID function Table 4. PID_stm32 function Table 5. cr4_fft_64_stm32 function Table 6. cr4_fft_256_stm32 function Table 7. cr4_fft_1024_stm32 function Table 8. fir_16by16_stm32 function Table 9. iirarma_stm32 function Table 10. iir_biquad_stm32 function Table 11. STM32F10xxx DSP library functions code footprint Table 12. PID controller, error computed outside the routine Table 13. PID controller, error computed within the routine Table 14. Complex radix 4, 16-bit FFT, coefficients in Flash memory Table 15. Complex radix 4, 16-bit FFT, coefficients in RAM Table bit, 32-tap FIR filter Table bit canonic form, 4 biquad IIR filter Table bit direct-form I, 8 th -order IIR filter Table 19. Document revision history /23
5 List of figures List of figures Figure 1. Block diagram of PID controller Figure 2. Block diagram of an FIR filter of length N Figure 3. Block diagram of the direct form I of second-order IIR filter Figure 4. Block diagram of the canonical form of a second-order IIR filter /23
6 DSP Library description UM DSP Library description The STM32F10xxx DSPLib is a suite of common functions for signal processing. It includes the following functions: Table 1. STM32F10xxx DSP library functions Function name Description DoPID DoFullPID PID_stm32 cr4_fft_64_stm32 cr4_fft_256_stm32 cr4_fft_1024_stm32 fir_16by16_stm32 iiarma_stm32 iir_biquad_stm32 PID controller in C, error computed outside the routine PID controller in C, error computed inside the routine PID controller in ASM, error computed outside the routine Complex radix-4 16-bit FFT optimized for 64 points Complex radix-4 16-bit FFT optimized for 256 points Complex radix-4 16-bit FFT optimized for 1024 points 16-bit FIR filter 16-bit auto-regressive moving-average IIR (ARMA) filter 16-bit biquad IIR filter 6/23
7 PID controller 2 PID controller 2.1 Description The proportional-integral-derivative or PID controller is commonly used in the industry. It is a feedback loop controller that manages the process command with a view to reducing the error between the desired setpoint and the measured process variable. The following block diagram shows the parallel structure of a PID controller. This is the structure implemented in this DSP library. Figure 1. Block diagram of PID controller P Ref Error + command Output + - I + Process + In D ai DSP library functions The DSP library provides three PID functions: DoPID: a PID core loop coded in C (the error is computed outside the function) DoFullPID: a full PID controller coded in C (with error computing) PID_stm32: an optimized PID core loop written in assembly DoPID function Table 2 describes the DoPID function. Table 2. Function name DoPID function DoPID Prototype Behavior description Input parameter Output parameter Return parameter u16 DoPID(u16 Error, u16 *Coeff) PID in C, error computed outside the function. Error: difference between reference and measured values Coeff: pointer to the coefficients table PID output command Example /* Fill the coefficients table */ Coeff[0] = Kp;/*proportional coefficient*/ Coeff[1] = Ki;/*integral coefficient*/ 7/23
8 PID controller UM0585 Coeff[2] = Kd;/*derivative coefficient*/ /* Compute the error */ Error = Target_Signal - Measured_Signal; /* PID control process */ Command = DoPID(Error, Coeff); DoFullPID function Table 3 describes the DoFullPID function. Table 3. DoFullPID function Function name DoFullPID Prototype Behavior description Input parameter Output parameter Return parameter u16 DoFullPID(u16 In, u16 Ref, u16 *Coeff) PID in C, error computed inside the function. In: Input (measured value) Ref: reference (target value) Coeff: pointer to the coefficients table Computed error PID output command Example /* Fill the coefficients table */ Coeff[0] = Kp;/*proportional coefficient*/ Coeff[1] = Ki;/*integral coefficient*/ Coeff[2] = Kd;/*derivative coefficient*/ /* PID control process, the error is computed inside the function */ Command = DoFullPID(Measured_Signal, Target_Signal, Coeff); PID_stm32 function Table 4 describes the PID_stm32 function. Table 4. Function name PID_stm32 function PID_stm32 Prototype Behavior description Input parameter Output parameter Return parameter u16 PID_stm32(u16 Error, u16 *Coeff); Assembly optimized PID controller with error computed outside the function. Error: difference between reference and measured values Coeff: pointer to the coefficients table PID output command The PID_stm32 function is used in the same way as the DoPID function. The error must be computed, then the PID_stm32 function is called to improve the PID control process and to return the appropriate command according to the coefficients table. 8/23
9 Complex 16-bit radix-4 FFT 3 Complex 16-bit radix-4 FFT 3.1 Description The discrete Fourier transform (DFT) converts N complex values from the time domain to the frequency domain. The fast Fourier transform (FFT) is an optimized algorithm designed to compute the DFT efficiently. The STM32F10xxx DSP library provides a complex radix-4, with decimation-in-time, linearorder FFT. Let x[n] be the time signal samples. To use the FFT functions of the DSP library, the following conditions must be satisfied: N is a power of 4 All the signal samples must be 32-bit data containg the 16-bit real part followed by the 16-bit imaginary part (in the little Endian order: imaginary_real). 3.2 DSP library functions The DSP provides three complex 16-bit radix-4 FFT functions: 1. cr4_fft_64_stm32: an optimized FFT function to compute 64-point DFT 2. cr4_fft_256_stm32: an optimized FFT function to compute 256-point DFT 3. cr4_fft_1024_stm32: an optimized FFT function to compute 1024-point DFT cr4_fft_64_stm32 function Table 5 describes the cr4_fft_stm32 function. Table 5. cr4_fft_64_stm32 function Function name Prototype Behavior description Input parameter Output parameter Return parameter cr4_fft_64_stm32 void cr4_fft_64_stm32(void *pssout, void *pssin, u16 Nbin); complex 16-bit, 64-point radix-4 FFT pssout: pointer to the output array data pssin: pointer to the input array data Nbin: the number of points, must be 64. 9/23
10 Complex 16-bit radix-4 FFT UM cr4_fft_256_stm32 function Table 6 describes the cr4_fft_256_stm32 function. Table 6. Function name cr4_fft_256_stm32 function cr4_fft_256_stm32 Prototype Behavior description Input parameter Output parameter Return parameter void cr4_fft_256_stm32(void *pssout, void *pssin, u16 Nbin); complex 16-bit, 256-point radix-4 FFT pssout: pointer to the output array data pssin: pointer to the input array data Nbin: the number of points, must be cr4_fft_1024_stm32 function Table 7 describes the cr4_fft_1024_stm32 function. Table 7. cr4_fft_1024_stm32 function Function name cr4_fft_1024_stm32 Prototype Behavior description Input parameter Output parameter Return parameter void cr4_fft_1024_stm32(void *pssout, void *pssin, u16 Nbin); complex 16-bit, 1024-point radix-4 FFT pssout: pointer to the output array data pssin: pointer to the input array data Nbin: the number of points, must be Example #define N 64 /*Number of points*/ u32 x[n],y[n]; /* input and output arrays */ u16 real[n], imag[n]; /* real and imaginary arrays */ /* Fill the input array */ for(i=0; i<n; i++) x[i] = (((u16)(real[i])) ((u32)(imag[i]<<16))); cr4_fft_64_stm32(y, x, N); /*computes the FFT of the x[n] samples*/ 3.3 FFT performance improvement The FFT coefficients table is stored in the Flash memory since it is declared as code in the assembly file. The performance of the FFT function can be improved by placing the FFT coefficients in RAM. This is done as described below: 10/23
11 Complex 16-bit radix-4 FFT 1. Comment all the FFT coefficients in the FFT function assembly file. /* TableFFT_V7 ;N=16 DC16 0x4000,0x0000, 0x4000,0x0000, 0x4000,0x0000 DC16 0xdd5d,0x3b21, 0x22a3,0x187e, 0x0000,0x2d41 DC16 0xa57e,0x2d41, 0x0000,0x2d41, 0xc000,0x4000 DC16 0xdd5d,0xe782, 0xdd5d,0x3b21, 0xa57e,0x2d41 ; N=64 DC16 0x4000,0x0000, 0x4000,0x0000, 0x4000,0x0000 DC16 0x2aaa,0x1294, 0x396b,0x0646, 0x3249,0x0c7c... */ 2. Then, in the main, include the table_fft.h file, which is a part of the DSP library. 3. Finally, go to the FFT function assembly code, and inverse the comment in the following lines: ADRL R0, TableFFT_V7 /* Coeff in Flash */ //LDR.W R0, =TableFFT /* Coeff in RAM */ 11/23
12 16-bit FIR filter UM bit FIR filter 4.1 Description The finite impulse filter (FIR) is a digital filter that is linearly dependent on a fixed finite number of input samples. The FIR filter can be defined by the number of coefficients to be processed (also called taps), which gives the number of MAC (multiply-accumulate) operations to be done. Figure 2. Block diagram of an FIR filter of length N x n x n-1 x n-2 x n-n Z -1 Z -1 Z -1 c 0 c 1 c 2 c N y n The FIR filter of the DSP library is a direct-form real FIR filter that uses an array of M 16-bit coefficients to filter N 16-bit samples. Let us put: a, the output vector of length N c, the coefficients vector of length M x, the input vector So, x must have a length of M + N 1. ai DSP library function The FIR function of the DSP library is an optimized assembly function that takes into account the load-store architecture of the Cortex -M3. Therefore, and as an optimization constraint, the number of taps and the number of output samples must be a multiple of 4. 12/23
13 16-bit FIR filter fir_16by16_stm32 function Table 8 describes the fir_16by16_stm32 function. Table 8. Function name fir_16by16_stm32 function fir_16by16_stm32 Prototype Behavior description Input parameter Output parameter Return parameter void fir_16by16_stm32(int *a,short *x,struct COEFS *p,unsigned int N) Block Fir 16-bit filter. a: output array x: input array p: pointer to the coefficient structure of the COEFS type N: number of output samples The filter coefficients and their number must be filled into a structure of the COEFS type. The coefficients structure is defined as follows: typedef struct { short *h; unsigned int nh; }COEFS; Example #define M 32 /*number of coefficients*/ #define N 32 /*number of output samples*/ COEFS fir_coefs;/*coefficients structure*/ int a[n];/*filter output vector*/ short x[m+n-1] = {x 0,x 1...,x M+N-1 };/*filter input vector*/ short h[m]={h 0,h 1...,h M-1 };/*filter coefficients vector*/ fir_coefs.nh = M; /*Number of Coefficients for FIR*/ fir_coefs.h = h; /*Pointer on FIR coefficient vector*/ fir_16by16_stm32(a,x,&fir_coefs,n);/*performs the FIR filtering*/ 13/23
14 16-bit IIR filters UM bit IIR filters 5.1 Description The infinite impulse response (IIR) filter is a digital filter that depends linearly on a finite number of input samples and a finite number of previous filter outputs. The IIR filter is represented by Equation 1 below. Equation 1 M yn [ ] = b i xn [ i] a i yn [ i] i = 0 N i = 1 Equation 1 is known as an auto-regressive moving average form (ARMA). The first sum of Equation 1 represents the moving average part, which is similar to an FIR block, and the second sum represents the auto-regressive part, which is the feedback from previous outputs. This IIR filter structure is called direct form I. Figure 3 shows the structure of the direct form I of a second-order IIR filter. Direct form I uses four delays to realize a second-order IIR filter. To reduce the number of delays, the canonical form may be used. Figure 4 represents the block diagram of the canonical form of a second-order IIR filter. The number of delays is reduced from 4 to only 2. Figure 3. Block diagram of the direct form I of second-order IIR filter x n b y n Z -1 Z -1 b a 1 Z -1 Z -1 b a 2 ai /23
15 16-bit IIR filters Figure 4. Block diagram of the canonical form of a second-order IIR filter x n + w n b 0 + y n Z a 1 b 1 + Z -1 -a 2 w n-2 b 2 ai15450 The DSP library implements the two forms (direct form I and the canonical form) of the IIR filter: Direct form I is used to design an IIR filter of order 4 (ARMA IIR) The canonical form is used to design an IIR filter of order 8, by using 4 second-order IIR filter sections (biquads) arranged in series (biquad IIR filter). 5.2 DSP library functions The DSP library provides two IIR filters: 1. iiarma_stm32: an ARMA IIR filter, designed with 4 auto-regressive and 5 movingaverage filter coefficients, so, in Equation 1, M = 4 and N = 4. The function code is written in assembly. 2. iir_biquad_stm32: a biquad IIR filter, designed by connecting 4 biquads in series. The function code is written in C iiarma_stm32 function Table 9 describes the iirarma_stm32 function. Table 9. iirarma_stm32 function Function name Prototype Behavior description Input parameter Output parameter Return parameter iirarma_stm32 void iirarma_stm32(short *y, short *x, short *h2, short *h1, int ny) 16-bit, auto-regressive moving-average IIR (ARMA) filter. y: output array of length ny+4 x: input array of length ny+4 h2: filter coefficient vector, moving-average part. h1: filter coefficient vector, auto-regressive part. ny: number of output samples 15/23
16 16-bit IIR filters UM0585 To use the iirarma_stm32 function, the following conditions must be satisfied: The moving-average coefficient vector, h2, must have a length of 5 shorts: short h2[5]; The auto-regressive coefficient vector, h1, must have a length of 5 shorts. The h1[0] value is not used, so 4 coefficients remain: short h1[5]; The number of output samples, ny, must be a multiple of 4 greater than or equal to 8. Input and output vectors must have a length of (ny+4) shorts. The first four elements of the output vector must have the previous outputs. Example #define NY 32/*number of outputs, must be a multiple of 4 and >= 8*/ /* Coefficients for the ARMA IIR filter */ short h2[5] = { 0x09c2, 0x270a, 0x3a8f, 0x270a, 0x09c2 }; short h1[5] = { 0x7fff, 0xd24a, 0x72ca, 0xcf4e, 0x1ad4 }; /* Input and output vectors */ short x[ny+4],y[ny+4]; /* Fill the input vector x */... /* Fill the 4 previous outputs */ y[0] = y0; y[1] = y1; y[2] = y2; y[3] = y3; /* Improve the filtering of NY samples */ iirarma_stm32(y, x, h2, h1, NY); iir_biquad_stm32 function Table 10 describes the iir_biquad_stm32 function. Table 10. iir_biquad_stm32 function Function name Prototype Behavior description Input parameter Output parameter Return parameter iir_biquad_stm32 void iir_biquad_stm32(u16 *y, u16 *x, s16 *IIRCoeff, u16 ny) 8 th -order 4 biquad IIR filter y: output array x: input array IIRCoeff: IIR filter coefficients ny: number of output samples 16/23
17 16-bit IIR filters Example #define NY 32/*number of outputs*/ /* Coefficients for the biquad IIR filter: 4 sections, with 5 coefficients in each section */ s16 Coeff[20] = {...}; /* Input and output vectors */ short x[ny],y[ny]; /* Fill the input vector x */... /* Improve the filtering of NY samples */ iir_biquad_stm32(y, x, Coeff, NY); 17/23
18 STM32F10xxx DSP library benchmark UM STM32F10xxx DSP library benchmark This section provides the STM32F10xxx DSP library benchmark results, which are computed using the IAR EWARM 5.20 toolchain, with high-speed optimization. 6.1 Function code footprint Table 11. STM32F10xxx DSP library functions code footprint Function name Code size (bytes) DoPID 52 DoFullPID 58 PID_stm32 72 cr4_fft_64_stm (1) cr4_fft_256_stm (1) cr4_fft_1024_stm (1) fir_16by16_stm iiarma_stm iir_biquad_stm FFT code size was computed with FFT coefficients table stored in Flash memory. If the FFT coefficients are stored in SRAM, the code size of the three FFT functions is equal to 480 bytes. 6.2 Function execution time PID controller Table 12. PID PID controller, error computed outside the routine 24 MHz 0 wait state 48 MHz 1 wait state 72 MHz 2 wait states cycle count time cycle count time cycle count time ASM function µs µs µs C function µs µs µs Analysis of the PID timing shows that assembly code is not as fast as C code. The compiler is more efficient in accessing variables than manual optimization (offset computation and data placement in literal pool). 18/23
19 STM32F10xxx DSP library benchmark Table 13. PID PID controller, error computed within the routine 24 MHz 0 wait state 48 MHz 1 wait state 72 MHz 2 wait states cycle count time cycle count time cycle count time C function 48 2 µs µs µs Fast Fourier transform (FFT) Table 14. FFT (ASM funct.) Complex radix 4, 16-bit FFT, coefficients in Flash memory 24 MHz 0 wait state 48 MHz 1 wait state 72 MHz 2 wait states cycle count time cycle count time cycle count time 64 points ms ms ms 256 points ms ms ms 1024 points ms ms ms Table 15. FFT (ASM funct.) Complex radix 4, 16-bit FFT, coefficients in RAM 24 MHz 0 wait state 48 MHz 1 wait state 72 MHz 2 wait states cycle count time cycle count time cycle count time 64 points ms ms ms 256 points ms ms ms 1024 points ms ms ms FIR filter Table 16. FIR (ASM filter) 16-bit, 32-tap FIR filter 24 MHz 0 wait state 48 MHz 1 wait state 72 MHz 2 wait states cycle count time cycle count time cycle count time 32 samples µs µs µs IIR filters Table 17. IIR (C filter) 16-bit canonic form, 4 biquad IIR filter 24 MHz 0 wait state 48 MHz 1 wait state 72 MHz 2 wait states cycle count time cycle count time cycle count time 32 samples µs µs µs 19/23
20 STM32F10xxx DSP library benchmark UM0585 Table 18. IIR (ASM filter) 16-bit direct-form I, 8 th -order IIR filter 24 MHz 0 wait state 48 MHz 1 wait state 72 MHz 2 wait states cycle count time cycle count time cycle count time 32 samples µs µs µs 20/23
21 Conclusion 7 Conclusion This user manual describes the STM32F10xxx DSP library, which contains: a PID controller complex 16-bit radix-4 FFT optimized functions for 64, 256 and 1024 points a 16-bit FIR filter a 16-bit direct-form I IIR filter a 16-bit canonical-form IIR filter designed by biquads 21/23
22 Revision history UM Revision history Table 19. Document revision history Date Revision Changes 13-Oct Initial release. 22/23
23 Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries ( ST ) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST s terms and conditions of sale. Purchasers are solely responsible for the choice, selection and use of the ST products and services described herein, and ST assumes no liability whatsoever relating to the choice, selection or use of the ST products and services described herein. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted under this document. If any part of this document refers to any third party products or services it shall not be deemed a license grant by ST for the use of such third party products or services, or any intellectual property contained therein or considered as a warranty covering the use in any manner whatsoever of such third party products or services or any intellectual property contained therein. UNLESS OTHERWISE SET FORTH IN ST S TERMS AND CONDITIONS OF SALE ST DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY WITH RESPECT TO THE USE AND/OR SALE OF ST PRODUCTS INCLUDING WITHOUT LIMITATION IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE (AND THEIR EQUIVALENTS UNDER THE LAWS OF ANY JURISDICTION), OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. UNLESS EXPRESSLY APPROVED IN WRITING BY AN AUTHORIZED ST REPRESENTATIVE, ST PRODUCTS ARE NOT RECOMMENDED, AUTHORIZED OR WARRANTED FOR USE IN MILITARY, AIR CRAFT, SPACE, LIFE SAVING, OR LIFE SUSTAINING APPLICATIONS, NOR IN PRODUCTS OR SYSTEMS WHERE FAILURE OR MALFUNCTION MAY RESULT IN PERSONAL INJURY, DEATH, OR SEVERE PROPERTY OR ENVIRONMENTAL DAMAGE. ST PRODUCTS WHICH ARE NOT SPECIFIED AS "AUTOMOTIVE GRADE" MAY ONLY BE USED IN AUTOMOTIVE APPLICATIONS AT USER S OWN RISK. Resale of ST products with provisions different from the statements and/or technical features set forth in this document shall immediately void any warranty granted by ST for the ST product or service described herein and shall not create or extend in any manner whatsoever, any liability of ST. ST and the ST logo are trademarks or registered trademarks of ST in various countries. Information in this document supersedes and replaces all information previously supplied. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners STMicroelectronics - All rights reserved STMicroelectronics group of companies Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States of America 23/23
AN2667 Application note
Application note STM8A GPIO application examples Introduction This document is intended to provide two practical application examples of the GPIO peripheral use in the STM8A device. The examples are: Toggling
STEVAL-CCM002V1. TFT-LCD panel demonstration board based on the STM32 as LCD controller. Features. Description
TFT-LCD panel demonstration board based on the STM32 as LCD controller Data brief Features Displays images on a TFT-LCD using the STM32 as LCD controller Includes a slideshow of images to demonstrate static
STEVAL-PCC010V1. ST802RT1A Ethernet PHY demonstration board with STM32F107 controller add-on board. Features. Description
ST802RT1A Ethernet PHY demonstration board with STM32F107 controller add-on board Data brief Features ST802RT1A Ethernet PHY demonstration board: ST802RT1A fast Ethernet physical layer transceiver On-board
AN4113 Application note
Application note Managing the Driver Enable signal for RS-485 and IO-Link communications with the STM32F05x USART Introduction RS-485 and IO-Link are half-duplex communication protocols that offer easy
STEVAL-SPBT4ATV3. USB dongle for the Bluetooth class 1 SPBT2632C1A.AT2 module. Features. Description
USB dongle for the Bluetooth class 1 SPBT2632C1A.AT2 module Features Based on V3.0 Bluetooth class 1 module, SPBT2632C1A.AT2 USB interface and power supply Supported reprogrammability via USB interface
STM32-MP3NL/DEC. STM32 audio engine MP3 decoder library. Description. Features
STM32 audio engine MP3 decoder library Data brief Features MPEG-1, 2 or 2.5 formats Layers 1, 2 and 3 Constant bit rate and variable bit rate Mono or stereo input streams PCM (Pulse Code Modulation) output
AN626 Application note
Application note Serial EEPROM product numbering This application note provides a detailed description of the part numbering scheme of Serial EEPROM products. The part numbering scheme consists of a maximum
AN2676 Application note
Application note STM8A reset application examples Introduction This document is one of a set of application notes giving examples of how to use the various blocks of the STM8A microcontroller family and
AN2672 Application note
Application note I²C application examples Introduction The I 2 C peripheral is very flexible, supporting standard interrupts in both 10-bit and 7-bit addressing modes. As a result, generated events are
AN3996 Application Note
Application Note Adjustable LED blinking speed using STM8SVLDISCOVERY Application overview This application note provides a short description of the demonstration firmware Discover which is preprogrammed
AN2143 Application note
AN2143 Application note Programming the ST10F27X embedded Flash using the ST10FLASHER tool Introduction This document summarizes the different steps needed to program the internal Flash memory of the ST10F27x
STM3210B-SK/KEIL STR91X-SK/KEI, STR7-SK/KEIL
STM3210B STR91X-SK/KEI, STR7 Keil starter kits for ST ARM core-based microcontrollers Data brief Features The ARM RealView Microcontroller Development Kit complete development software package with: µvision3
AN3980 Application note
Application note STM32 firmware library for dspin L6470 1 Introduction This application note describes the implementation of the STM32 firmware library for the dspin stepper motor control product (L6470).
UM1572 User manual. STEVAL-IPE020V1: ST energy meter application based on the Android platform. Introduction
User manual STEVAL-IPE020V1: ST energy meter application based on the Android platform Introduction The ST energy meter application is a user friendly Android based solution based on NFC technology that
STM32-SK/KEIL STR91X-SK/KEI, STR7-SK/KEIL
STM32 STR91X-SK/KEI, STR7 Keil starter kits for ST ARM core-based microcontrollers Data brief Features The ARM RealView Microcontroller Development Kit complete development software package with: µvision3
EV-VNQ5E050AK VNQ5E050AK evaluation board
VNQ5E050AK evaluation board Data brief production data Features Parameter Symbol Value Unit Max supply voltage V CC 41 V Operating voltage range V CC 4.5 to 28 V Max On-State resistance R ON 50 mω Current
UM0401 User manual. User manual for eight bit port expander STMPE801 demonstration board. Introduction
User manual User manual for eight bit port expander STMPE801 demonstration board Introduction This document explains the functioning of the demo board for the port expander Chip STMPE801 with a PC GUI
AN3279 Application Note
Application Note Adjustable LED blinking speed using STM8S-DISCOVERY touch sensing key Application overview This application note provides a short description of how to use the touch sensing key to change
AN2470 Application note TS4871 low voltage audio power amplifier Evaluation board user guidelines Features Description
Application note TS4871 low voltage audio power amplifier Evaluation board user guidelines Features TS4871 low voltage audio power amplifier with active low standby mode Operating range from V CC =2.2V
AN2855 Application note
Application note Configuration for single-click and double-click detection using the FC30 Introduction This document is intended to provide application information for the click and double-click detection
AN3354 Application note
Application note STM32F105/107 in-application programming using a USB host 1 Introduction An important requirement for most Flash-memory-based systems is the ability to update firmware installed in the
AN3965 Application note
Application note STM32F40x/STM32F41x in-application programming using the USART 1 Introduction An important requirement for most Flash-memory-based systems is the ability to update firmware when installed
UM0792 User manual. Demonstration firmware for the DMX-512 communication protocol transmitter based on the STM32F103Zx.
User manual Demonstration firmware for the DMX-512 communication protocol transmitter based on the STM32F103Zx Introduction This document describes how to use the demonstration firmware for the DMX-512
AN2594 Application note
AN2594 Application note EEPROM emulation in STM32F101xx and STM32F103xx microcontrollers Introduction Many applications require EEPROM (electrically erasable programmable read-only memory) for non-volatile
STM3220G-SK/KEI. Keil starter kit for STM32F2 series microcontrollers (STM32F207IG MCU) Features. Description
Keil starter kit for STM32F2 series microcontrollers (STM32F207IG MCU) Data brief Features The Keil MDK-Lite development tools: µvision 4 IDE/Debugger for application programming and debugging ARM C/C++
STM32-SK/RAIS,STR91X-SK/RAI,STR7-SK/RAIS STM32-D/RAIS,STR9-D/RAIS,STR7-D/RAIS
STM32-SK/RAIS,,STR7-SK/RAIS STM32-D/RAIS,STR9-D/RAIS,STR7-D/RAIS Raisonance REva starter kits for ST ARM core-based microcontrollers Data brief Features Raisonance software toolset with: GNU C compiler
STTS V memory module temperature sensor. Features
2.3 V memory module temperature sensor Data brief Features is a 2.3 V memory module temperature sensor forward compatible with JEDEC standard TS3000 and backward compatible with STTS424 Operating temperature
AN2825 Application Note
Application Note S-Touch STMPE811 resistive touchscreen controller advanced features Introduction This application note provides details on the advanced features of the S-Touch STMPE811 touchscreen controllers.
SOT23-6L ESDALCL6-2SC6
Very low capacitance and low leakage current ESD protection Features 2 data-line protection Datasheet production data Protects V BUS Very low capacitance: 2.5 pf typ. Very low leakage current: 10 na at
ST19WR08 Dual Contactless Smartcard MCU With RF UART, IART & 8 Kbytes EEPROM Features Contactless specific features
Dual Contactless Smartcard MCU With RF UART, IART & 8 Kbytes EEPROM Data Brief Features Enhanced 8-bit CPU with extended addressing modes 112 KBytes user ROM with partitioning 2 KBytes user RAM with partitioning
OSPlus USB Extension. OSPlus USB 2.0 extension. Description. Features. Application. TCP/IP stack NexGenOS NexGenIP VFS. FAT Ext2 LVM Device layer
OSPlus USB 2.0 extension Data brief Application VFS FAT Ext2 LVM Device layer Device drivers TCP/IP stack NexGenOS NexGenIP NexGenRemote NexGenResolve NexGenBoot NexGenPPP USB stack OSPlus interface Class
AN2557 Application note
Application note STM32F10x in-application programming using the USART Introduction An important requirement for most Flash-memory-based systems is the ability to update firmware when installed in the end
AN2592 Application note
AN2592 Application note How to achieve 32-bit timer resolution using the link system in STM32F101xx and STM32F103xx microcontrollers Introduction In many applications, 32-bit resolution is required to
AN3154 Application note
Application note CAN protocol used in the STM32 bootloader Introduction This application note describes the CAN protocol used in the STM32 microcontroller bootloader. It details each supported command.
UM1488 User manual. STPMC1 evaluation software. Introduction
User manual STPMC1 evaluation software Introduction STPMC1 evaluation software is a graphical user interface to read, configure and calibrate an STPMC1 energy metering device, suitable for parallel and
STM8 I 2 C optimized examples
Application note STM8 I 2 C optimized examples Introduction This document describes how to use the following I 2 C optimized examples Hardware configuration example of a common I 2 C bus Master firmware
UM0693 User manual. 1 Introduction. STM8L101-EVAL demonstration firmware
User manual STM8L101-EVAL demonstration firmware 1 Introduction Note: This document describes the demonstration firmware running on the STM8L101-EVAL evaluation board. You can use it to evaluate the capabilities
STEVAL-IHM028V1. 2 kw 3-phase motor control demonstration board featuring the IGBT intelligent power module STGIPS20K60. Features.
Features 2 kw 3-phase motor control demonstration board featuring the IGBT intelligent power module STGIPS20K60 Data brief Complete solution for a 2 kw power inverter HV supply mode: voltage 90 VAC to
Obsolete Product(s) - Obsolete Product(s)
8 line low capacitance EMI filter and ESD protection Main product characteristics Where EMI filtering in ESD sensitive equipment is required: LCD and camera for mobile phones Computers and printers Communication
STMicroelectronics. STxP70-4 assembler. User manual Rev A. October
STMicroelectronics STxP70-4 assembler User manual 8229631 Rev A October 2009 www.st.com BLANK User manual STxP70-4 assembler Introduction The STxP70-4 version of the assembler is based upon the GNU assembler
TN0132 Technical note
Technical note STM32 Serial Wire Viewer and ETM capabilities with EWARM 5.40 and MDK-ARM 3.70 Introduction This document presents Serial Wire Viewer (SWV) and Embedded Trace Macrocell (ETM) capabilities
EMIF01-SMIC01F2 IPAD. Single line EMI filter including ESD protection. Main application. Description. Benefits. Pin configuration (Bump side view)
IPAD Single line EMI filter including ESD protection Main application Single ended microphone in mobile phones and portable devices Description The is a highly integrated device designed to suppress EMI/RFI
AN2261 APPLICATION NOTE
APPLICATION NOTE GPIO ports configuration in ST30 devices INTRODUCTION The General Purpose IO (GPIO) Ports of ST30 devices are programmable by software in several modes:, Output, Alternate Function,, Output
EVAL6235PD. L6235 three-phase brushless DC motor driver demonstration board. Features. Description
L6235 three-phase brushless DC motor driver demonstration board Features Operating supply voltage from 8 V to 52 V 5.6 A output peak current (2.8 A RMS ) Operating frequency up to 100 khz Non-dissipative
AN2240 Application note
AN0 Application note Using the evaluation board for the TS7 low noise microphone preamplifier with V bias Introduction This application note describes the DEMO TS7 evaluation board, specifically designed
STA bit single chip baseband controller for GPS and telematic applications. Features
32-bit single chip baseband controller for GPS and telematic applications Data Brief Features Suitable for automotive applications ARM7TDMI 16/32 bit RISC CPU based host microcontroller. Complete embedded
AN2474 Application note
AN474 Application note TS4995.W fully differential audio power amplifier with selectable standby and 6db fixed gain - Evaluation board user guidelines Introduction This application note describes the DEMO
SMP75. Trisil for telecom equipment protection. Features. Description. Applications. Benefits
Trisil for telecom equipment protection Features bidirectional crowbar protection voltage: 8 V low leakage current: I R = 2 µa max holding current: I H = 15 ma min repetitive peak pulse current: I PP =
STM32 embedded target for MATLAB and Simulink release 3.1. Summary for STM32 embedded target for MATLAB and Simulink release 3.1:
Release note STM32 embedded target for MATLAB and Simulink release 3.1 Introduction This release note is related to STM32 embedded target for MATLAB and Simulink (STM32- MAT/TARGET). It is updated periodically
AN2737 Application note Basic in-application programming example using the STM8 I 2 C and SPI peripherals Introduction
Application note Basic in-application programming example using the STM8 I 2 C and SPI peripherals Introduction This application note is one of a set of application notes giving examples of how to use
AN3250 Application note
Application note M24LR64-R Multi-bank reference design description and settings 1 Introduction The M24LR64-R multi-bank reference design has been created to help users increase the memory density of their
How to interpret the LPS331AP pressure and temperature readings. Main components mbar absolute barometer with digital output
DT Design tip How to interpret the LPSAP pressure and temperature readings By Tom Bocchino and Boon-Nam Poh LPSAP Main components - mbar absolute barometer with digital output Purpose and benefits Description
ST33F1M. Smartcard MCU with 32-bit ARM SecurCore SC300 CPU and 1.25 Mbytes high-density Flash memory. Features. Hardware features.
Smartcard MCU with 32-bit ARM SecurCore SC300 CPU and 1.25 Mbytes high-density Flash memory Data brief Features ST33F1M major applications include: Mobile communications (GSM, 3G and CDMA) Java Card applications
AN2734 Application note S-Touch design procedure Introduction
Application note S-Touch design procedure Introduction The purpose of this application note is to provide the system/hardware engineers enough ground knowledge to start the design of capacitive touch inferface
STLC2500D. Bluetooth V2.1 "Lisbon" + EDR. Features. Description
Bluetooth V2.1 "Lisbon" + EDR Data Brief Features Based on Ericsson Technology Licensing Baseband Core (EBC) Bluetooth specification compliance: V2.1 ( Lisbon ) + EDR HW support for packet types ACL, SCO,
Getting started with DfuSe USB device firmware upgrade STMicroelectronics extension
User manual Getting started with DfuSe USB device firmware upgrade STMicroelectronics extension Introduction This document describes the demonstration user interface that was developed to illustrate use
STICE CF/Stice_Connect AD/Stice_Connect AS/Stice_Connect
STICE CF/Stice_Connect AD/Stice_Connect AS/Stice_Connect Full-featured cost-effective emulation system for ST microcontrollers Data brief Features Emulation system Real-time emulation of STM8 MCUs (CPU
AN2430 Application note
Application note STR75x SystemMemory boot mode Introduction te: This application note describes the features of the SystemMemory boot mode developed for STR75x Flash microcontrollers providing all the
EMIF02-SPK02F2. 2-line IPAD, EMI filter and ESD protection. Features. Application. Description. Complies with the following standards
2-line IPAD, EMI filter and ESD protection Datasheet production data Features Packaged in lead-free Flip Chip Very low resistance: 0.35 Ω High attenuation: -45 db at 900 MHz Very low PCB space consumption:
Description SPC564A-DISP. March 2014 DocID Rev 3 1/5
SPC564A-DISP: Discovery+ evaluation board Description Data brief - production data Features SPC564A70L7 32-bit 150 MHz e200z4 Power Architecture core, 2Mbyte on-chip in an LQFP176 package. Board Supply:
EMIF02-MIC01F2 2-line IPAD, EMI filter including ESD protection Features Application Description Complies with the standards:
2-line IPAD, EMI filter including ESD protection Features 2-line symetrical low-pass filter Lead-free package High-density capacitor High-efficiency EMI filtering Very small PCB footprint: 1.42 mm x 1.92
AN2361 Application note
AN2361 Application note Interfacing with the STR91x software library using Configuration and Programming Software (CAPS) Introduction STR91x microcontrollers offer extremely flexible configuration of I/O
AN2408 Application note
Application note 900mA standalone linear Li-Ion battery charger with thermal regulation Introduction One way to minimize the size and complexity of a battery charger is to use a linear-type charger. The
AN3155 Application note
Application note USART protocol used in the STM32 bootloader Introduction This application note describes the USART protocol used in the STM32 microcontroller bootloader. It details each supported command.
AN2673 Application note
Application note STM8A SPI application examples Introduction This application note is one of a set of application notes giving examples of how to use the various blocks of the STM8A microcontroller family
RN0046 Release note. 1 Introduction. SimpleMAC library for STM32W108xx kits. About this release note
Release note SimpleMAC library for STM32W108xx kits 1 Introduction About this release note This release note is related to the SimpleMAC library which supports all the available STM32W108xx kits. This
Main components USB charging controller with integrated power switch
DN0019 Design note Smart dual-port USB charger with STCC2540 Designs from our labs describe tested circuit designs from ST labs which provide optimized solutions for specific applications. For more information
ST19NP18-TPM-I2C Trusted Platform Module (TPM) with I²C Interface Features
Trusted Platform Module (TPM) with I²C Interface Data brief Features Single-chip Trusted Platform Module (TPM) Embedded TPM 1.2 firmware I²C communication interface (Slave mode) Architecture based on ST19N
STM8-SK/RAIS STM8-D/RAIS ST7-SK/RAIS ST7-D/RAIS
STM8-SK/RAIS STM8-D/RAIS ST7-SK/RAIS ST7-D/RAIS Features Raisonance s complete, low-cost starter kits for STM8 and ST7 Embedded RLink USB interface to host PC In-circuit debugging and programming Application
UM1084 User manual. CR95HF development software user guide. Introduction. Reference documents
User manual CR95HF development software user guide Introduction The CR95HF development software is a PC software which allows to configure, evaluate, and communicate with ST CR95HF 13.56 MHz multiprotocol
AN4274 Application note
Application note The serial communication driver between the ST7580 and the STM32Fx By Vincenzo Mormina Introduction This document describes the serial communication driver between the ST7580 and the STM32Fx.
Main components 1 A, high efficiency adjustable single inductor dual mode buckboost DC-DC converter
DN0007 Design note STBB1 buck-boost converter used as a 500mA LED driver with 1.8VDC-5.5VDC Vin Designs from our labs describe tested circuit designs from ST labs which provide optimized solutions for
Distributed by: www.jameco.com 1-800-831-4242 The content and copyrights of the attached material are the property of its owner. ST7xxxx-SK/RAIS Raisonance s complete, low-cost starter kits for ST7 The
LD A very low drop adjustable positive voltage regulator. Description. Features
7 A very low drop adjustable positive voltage regulator Description Datasheet - production data Features P ² PAK Output current limit Low-dropout voltage: typically 400 mv at 7 A output current Output
AN4321 Application note
Application note Getting started with the SPC56L-Discovery Introduction SPC56L-Discovery evaluation kit is based on the 32-bit microcontrollers SPC56EL70L5. The SPC56L-Discovery is an evaluation board
STM8L-PRIMER STM32-PRIMER STMPRIMER
STM8L-PRIMER STM32-PRIMER STMPRIMER Raisonance STM32 and STM8 Primers for fun, easy evaluation and development with STM32 and STM8 Features Data brief The versatile EvoPrimer range includes: In-circuit
AN2781 Application note
Application note UART emulation software in STM8S and STM8A microcontrollers Introduction This application note describes how to emulate the UART behavior and functionality using routines in STM8S microcontrollers.
TN0189 Technical note
Technical note STM8 bootloader frequently asked questions 1 Introduction All STM8A, STM8L, and STM8S devices with a Flash memory space greater than 16 Kbytes have a ROM bootloader: STM8AF51xx STM8AF61xx
AN2202 Application note
Application note STR73x microcontroller power management Introduction This application note provides an overview of the STR73x power management features and gives some guidelines for using the low power
The following table provides a general information of the considered toolchains. Toolchain Company Version Release date Hardware emulator
TN0072 Technical note Introduction The documentation provides an overview of the STM32 devices and various toolchains. It provides information on the STM32 characteristics and how they are supported. Many
ST21NFCB. Near field communication controller. Features. RF communications. Hardware features. Communication interfaces. Electrical characteristics
Near field communication controller Data brief Features NFC operating modes supported: Card emulation Reader / Writer Peer-to-peer communication Hardware features FBGA WFBGA 64-pin 36 Kbytes of EEPROM
STM8L-PRIMER STM32-PRIMER STMPRIMER
STM8L-PRIMER STM32-PRIMER STMPRIMER Raisonance STM32 and STM8 Primers for fun, easy evaluation and development with STM32 and STM8 Data brief Features The versatile EvoPrimer range includes: In-circuit
L6460. SPI configurable stepper and DC multi motor driver. Features. Description
SPI configurable stepper and DC multi motor driver Data brief Features Operating voltage supply from 13 V to 40 V 4 full bridge driver configurable in multi-motor application to drive: 2 DC and 1 stepper
AN3362 Application note
Application note Clock configuration tool for STM32F2xx microcontrollers Introduction This application note presents the clock system configuration tool for the STM32F2xx microcontroller family. The purpose
AN2548 Application note
Application note Using the STM32F101xx and STM32F103xx controller 1 Introduction This application note describes how to use the STM32F101xx and STM32F103xx direct memory access () controller. The STM32F101xx
AN3988 Application note
Application note Clock configuration tool for STM32F40x/41x microcontrollers Introduction This application note presents the clock system configuration tool for the STM32F4xx microcontroller family. The
ST33F1M, ST33F1M0, ST33F896, ST33F768, ST33F640, ST33F512
ST33F1M, ST33F1M0, ST33F896, ST33F768, ST33F640, ST33F512 Secure MCU with 32-bit ARM SC300 CPU, SWP interface, NESCRYPT cryptoprocessor and high-density Flash memory Data brief Micromodule DFN8 package
AN4464 Application note
Application note Porting a Green Hills SW to SPC5Studio Introduction SPC5Studio provides a comprehensive framework to design, build and deploy embedded applications for SPC56 Power Architecture 32-bit
AN3001 Application note
Application note Demonstration board user guidelines for the TS4657 single supply stereo digital audio line driver Introduction This application note focuses on the TS4657 demonstration board, designed
SMP30. Trisil for telecom equipment protection. Features. Applications. Description. Benefits
SMP3 Trisil for telecom equipment protection Features Bidirectional crowbar protection Voltage range from 62 V to 27 V Low capacitance from 1 pf to 2 pf typ.@ 5 V Low leakage current: I R = 2 µa max. Holding
AN3140 Application note
Application note How to configure the SPEAr3xx general purpose timers (GPTs) Introduction This application note provides information about how to configure the general purpose timers (GPTs) integrated
AN2768 Application note LIS331DL 3-axis digital MEMS accelerometer: translates finger taps into actions Introduction
Application note LIS331DL 3-axis digital MEMS accelerometer: translates finger taps into actions Introduction This document is intended to provide application information for the LIS331DL low-voltage 3-axis
AN2606 Application note
Application note STM32F101xx, STM32F102xx and STM32F103xx system memory boot mode Introduction This application note describes the bootloader stored in the system memory of the STM32F101xx, STM32F102xx
AN3099 Application note
Application note IBIS models for signal integrity simulation of SPEAr3xx applications Introduction This application note is intended for hardware developers that are using the SPEAr3xx embedded MPU in
EMIF03-SIM06F3. 3-line IPAD, EMI filter including ESD protection. Description. Features. Application. Complies with the following standards:
3-line IPAD, EMI filter including ESD protection Description Datasheet production data The EMIF03-SIM06F3 chip is a highly integrated audio filter device designed to suppress EMI/RFI noise in all systems
AN4152 Application note
Application note Clock configuration tool for STM32F302xx/STM32F303xx/STM32F31xxx microcontrollers Introduction This application note presents the clock system configuration tool for the STM32F302xx/STM32F303xx/STM32F31xxx
AN3265 Application note
Application note Handling hardware and software failures with the STM8S-DISCOVERY Application overview This application is based on the STM8S-DISCOVERY. It demonstrates how to use the STM8S window watchdog
ST10F271B/E, ST10F272B/E Errata sheet
Errata sheet BAG silicon version Introduction Note: This errata sheet describes all the functional and electrical problems known in the BAG silicon version of ST10F271B, ST10F271E, ST10F272B and ST10F272E
AN3174 Application note
Application note Implementing an RC5 infrared remote control receiver with the STM32F10xx microcontrollers Introduction Nowadays, almost all audio and video equipment can be controlled using an infrared
EMIF M8. 4-line IPAD low capacitance EMI filter and ESD protection in micro QFN package. Features. Applications. Description
4-line IPAD low capacitance EMI filter and ESD protection in micro QFN package Features EMI symmetrical (I/O) low-pass filter High efficiency in EMI filtering: -34 db at frequencies from 900 MHz to 1.8