MICROCONTROLLERS MIXED-SIGNAL

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1 MICROCONTROLLERS MIXED-SIGNAL DESIGN GUIDE Data Sheets Application Notes Free Samples Lowest Cost, Serial-to-Ethernet Microcontroller 2nd EDITION High-Speed 8051 µc Has Ethernet Media-Access Controller COMMUNICATE WITH NEW AND LEGACY EQUIPMENT NETWORKED MICROCONTROLLER REMOTE MONITORING AND CONTROL THROUGH THE NETWORK x3 SERIAL UARTs 8051 µc WITH TCP/IPv4/6 NETWORK STACK IN ROM 10/100 ETHERNET MAC DS80C400 Three Full-Duplex Hardware Serial UARTs Support Standard Asynchronous Baud Rates Up to 2.3Mbps and Synchronous Baud Rates Up to 18.75Mbps Ethernet MAC Connects to Your Choice of 10/100 Base-T, Optical, or HomePNA PHY Monitor and Control Equipment Remotely from a Standard HTTP Web Browser IP Address Can Be Configured Dynamically Using DHCP MAC Address Can Be Obtained from a Companion IEEE 1-Wire MAC Address Chip Free Download of the TINI (Tiny InterNet Interfaces) Runtime Environment for Rapid Code Development and Customization APIs Include Asynchronous Serial, SPI, CAN, 1-Wire, Parallel, PPP Dial-Up Networking, and More Java VM Enables Use of Widely Available Development Tools Part Package Supply Voltage Temp Range ( C) Price ($) DS80C LQFP 3.3V supply, 64 I/O port pins are 5V tolerant -40 to Frequently Asked Questions about Networked Microcontrollers An application note answers Frequently Asked Questions (FAQs), focusing on both hardware and software used to create a network-enabled device. The content is specific to the DS80C400, DS80C410, or DS80C411 microcontrollers. View the note at: SPI is a trademark of Motorola, Inc. Java is a trademark of Sun Microsystems. 1-Wire and TINI are registered trademarks of Dallas Semiconductor Corp up recommended resale, FOB USA. Price provided is for design guidance and is FOB USA. International prices will differ due to local duties, taxes, and exchange rates. Not all packages are offered in 1k increments, and some may require minimum order quantities. The Maxim logo is a registered trademark of Maxim Integrated Products, Inc. The Dallas Semiconductor logo is a registered trademark of Dallas Semiconductor Corp Maxim Integrated Products, Inc. All rights reserved.

2 Industry s Highest MIPS/mA, 16-Bit Flash µc Cuts Power by 50% The MAXQ2000 microcontroller is designed around an innovative, one-clock-per-instruction, 16-bit RISC architecture. MAXQ technology combines high performance and low power with a variety of complex peripheral functions. 132-SEGMENT LCD CONTROLLER/ DRIVER 17 x 8 DISPLAY RAM 16-BIT MAXQ RISC CPU 32k x 16 FLASH ROM (64kB) 1k x 16 DATA SRAM (2kB) 4 3 INDUSTRY'S HIGHEST MIPS/mA* SAVES POWER 1-Wire MASTER BUS 16 x 16 HARDWARE MULTIPLIER MIPS/mA* 2 TIMER/PWM SERIAL UART 1 SPI INTERFACE 0 JTAG DEBUG MAXQ2000 MAXQ2000 COMPETITOR 1 COMPETITOR 2 COMPETITOR 3 *(Machine cycles/clk) (average instruction/machine cycle) (MHz/mA) Microcontroller Features 20MHz (max) Operating Frequency Performance Approaches 1MIPS/MHz 64kB Flash, 2kB SRAM 16-Bit Instruction, ALU, and Data Path 33 Total Instructions Simplify Programming Low-Power Features < 1µA (typ) Stop-Mode Current 5.1mA Flash Operating Current at 20MIPS Peripherals 2 UARTs, SPI Master/Slave Interface Up to 132-Segment LCD Controller 16 x 16 Hardware Multiplier with 48-Bit Accumulator 32-Bit Binary Real-Time Clock (RTC) Tools Complete Range of Development Tools Includes C Compiler, ICE, and IDE Part Temperature Range ( C) Program Memory (kb Flash) Data Memory (kb SRAM) LCD Segments Ext INTs Package MAXQ2000-RAX QFN -40 to MAXQ2000-RBX TQFN For a Detailed Comparison of Normalized MIPS/mA, Visit: MAXQ is a registered trademark of Maxim Integrated Products, Inc. 2

3 Low-Pin-Count, 16-Bit RISC µc Has Linear Regulator, Horn/Alarm Driver, and Comparator The MAXQ3212/MAXQ3210 are high-performance, low-cost µcs that integrate program and data EEPROM, a 3.6MIPS µc core, and an analog comparator. The MAXQ3210 adds an integrated linear regulator and piezoelectric horn driver for even more design flexibility. 6V TO 9.5V SUPPLY VOLTAGE 5V AT 50mA REGULATED OUTPUT VOLTAGE REGULATOR MAXQ3210 RISC µc EVALUATION KIT AVAILABLE V REF +2.5V, ±2.5% REFERENCE PIEZOELECTRIC HORN/ALARM DRIVER 1kWORD EEPROM 128B EEPROM (DATA) 64B SRAM (DATA) 2kWORD UTILITY ROM 16-BIT TIMER/COUNTER WITH PRESCALER GPIO MAXQ10 RISC CORE CMP INPUT CMP OUTPUT COMPARATOR BROWN-OUT AND POR JTAG HIGH-CURRENT LED DRIVER µc Features DC to 3.58MHz Clock Input MAXQ10 Core with 16-Bit Instruction and 8-Bit Data Bus 33 Total Instructions Simplify Programming 2kB Program EEPROM 128B Data EEPROM/64B SRAM Sixteen 8-Bit Accumulator Registers Sixteen 16-Bit Working Registers Development Tools C Compiler, ICE, and IDE Peripherals Linear Regulator (MAXQ3210) with 5V Regulated Output, 50mA Piezoelectric Horn/Alarm Driver (MAXQ3210) Analog Comparator Selectable Internal or External Voltage Reference High-Current I/O Pin Suitable for LED Drive Up to 15 General-Purpose I/O Pins One 16-Bit Timer/Counter with Prescaler Brown-Out Voltage Detection with Power-On Reset Part Temperature Range ( C) Program Memory Operating Voltage (V) Peripherals Package 5V regulator, horn/alarm MAXQ to 9 driver, comparator, LED driver -40 to +85 2kB EEPROM MAXQ to 5.5 Comparator, LED driver 24-TSSOP, PDIP 3

4 16-Bit RISC Microcontrollers Deli MAXQ Technology Obsoletes Traditional Microcontrollers MAXQ microcontrollers are optimized to be natural companions to analog circuits. Designed for reduced noise operation, the MAXQ integrates high-precision analog functions alongside digital components, resulting in reduced chipcount solutions. The 1-cycle MAXQ RISC architecture achieves unmatched performance-to-power characteristics among 16-bit microcontrollers by combining superior clock utilization with intelligent clock distribution. This powerful combination makes products easier to design and build, shortens time-to-market, and delivers outstanding performance. MAXQ BASIC OPERATION PROGRAM MEMORY DATA MEMORY DESTINATION IR INSTRUCTION DECODER SOURCE IP DP SP 1:16 ALU 16:1 I/O I/O I/O Low-Power Operation Intelligent Clock Level Distribution Higher MIPS/MHz Operation Reduces Application Clock Frequency High Performance One-Clock-per-Machine-Cycle Operation No Instruction Pipeline Harvard Memory Architecture Hardware Autoincrement/Autodecrement Data Pointers 4

5 ver Industry-Leading Performance Unique MAXQ Architecture Remains Quiet for Complex Analog Operations With MAXQ technology, instructions are basically moves, with source and destination encoded in each instruction word. Instruction fetch, source-destination transfer, and ALU-operations are all performed within the same cycle. No pipeline is required for this true single-cycle architecture. Since the source and destination encodings identify which modules are involved in a given transfer, a highly targeted, per-instruction clock-distribution scheme can be employed. This intelligent clock-distribution scheme reduces power consumption and clock noise, yielding a quiet integration environment for analog circuitry. Every MAXQ instruction word is 16 bits in length, and is a MOVE operation from source to destination. The f format bit, the most significant bit of the instruction, designates the format of the source operand for the MOVE operation. When the format bit is configured to 0, the eight source encoding bits are taken literally, thus allowing any immediate source data byte to be specified within a single instruction. When the format bit is configured to 1, the eight source encoding bits are broken down into module and index subfields used to specify a source or destination. MAXQ 16-BIT INSTRUCTION WORD FORMAT DESTINATION SOURCE f ddd dddd ssss ssss 1 INDEX MODULE INDEX MODULE 0 INDEX MODULE IMMEDIATE BYTE DATA (e.g., 00h-FFh) MAXQ Competitive Analysis Study The MAXQ µc s 16-bit, single-cycle core makes it a better performer than competitive µcs. To demonstrate the abilities of the MAXQ, we took benchmark code written for a competitor's µc and ran it on the MAXQ2000. We compared the MAXQ's performance against several competitors and even the 32-bit ARM7. The results show that the MAXQ is the best performer among the 8-/16-bit devices, and that it is competitive with the 32-bit ARM7. For more information, go to: 5

6 Fastest Drop-In 8051 Microcontroller with In-Application Programmable (IAP) Flash Programming Allows Field Updates of User Code UP TO 64kB FLASH MEMORY 1kB SRAM OVER 30x FASTER* 33 DUAL DATA POINTERS WITH AUTOINCREMENT/ AUTODECREMENT DS89C450 HIGH-SPEED ONE-CLOCK-CYCLE 8051 MICROPROCESSOR 32 GENERAL- PURPOSE I/O PINS MIPS DUAL SERIAL PORTS THREE 16-BIT TIMER/COUNTERS ORIGINAL 8051 DS89C450 16/32/64kB Flash Memory for Application Code 1 Clock-per-Machine Cycle Operation vs. 12 Clocks on Original Byte Scratchpad and 1kB Ultra-Fast MOVX SRAM Dual Data Pointers with Autoincrement/Autodecrement 8051 Pin/Code Compatible 2x/4x Clock Multiplier Allows Simple Crystal Selection Paged/Nonpaged Memory Access with Stretch Enables Communication with Slower Legacy Peripherals Watchdog Timer Provides Errant-Code Recovery EVALUATION KIT AVAILABLE Part Flash Memory (kb) DS89C Operating Frequency (MHz) In-Application Programmable Temperature Range ( C) Voltage (V) Price ($) 7.00, 8.33 DS89C , , to DS89C , 8.89 DS89C , 9.45 *The DS89C450, operating at 33MHz, achieves up to 33x better performance than the original 12-clock-per-machine-cycle 8051 operating at 12MHz up recommended resale. Prices provided are for design guidance and are FOB USA. International prices will differ due to local duties, taxes, and exchange rates. Not all packages are offered in 1k increments, and some may require minimum order quantities. 6

7 Industry s First SOC Sensor Conditioner with CAN 2.0B/LIN Interfaces 16-BIT RISC µc 2N3904 TEMPERATURE SENSOR VBRIDGEA GNDA VBRIDGEB DUAL-BRIDGE SENSOR OUTA+ OUTA- AIN0 AIN2 AIN4 AIN6 AIN8 AIN10 AIN12 AIN14 AIN1 AIN3 AIN5 AIN7 AIN9 AIN11 AIN13 AIN15 MUX MUX PGA 12-BIT ADC P0.7_T1 P0.6_T0 P0.5_DACLOAD P0.4_ADCCTL DIGITAL I/O OUTB+ 12-BIT DAC GNDB OUTB- VDAC V DD ANALOG OUTPUT OR +12V 512kB DATA FLASH DUAL-BRIDGE SENSOR VBRIDGEA GNDA VBRIDGEB OUTA+ OUTA- OUTB+ MAXQ7665 P0.3_TCK P0.2_TDI P0.1_TMS P0.0_TD0 JTAG TXD RXD SHDN MAX13020 LIN TRANSCEIVER TXD LIN RXD V DD LIN BUS OR V DD 12V 10µF IN EN HOLD GND MAX5024 LDO OUT SET RESET GNDB 5V V DD 100nF OUTB- 100nF 100nF 100nF EXTERNAL RESET IS OPTIONAL 8MHz REFADC REFDAC AV DD V DDIO1 V DDIO0 RESETN XIN XOUT UART (LIN 2.0) CAN 2.0B MAXQ20 16-BIT RISC MICRO 16kB/32kB PROGRAM FLASH 512B/1kB DATA FLASH CANTXD CANRXD DV DD LRPENB GNDIO SOGND AGND AGNDS DGND0 DGND1 3.3V 15µF 100nF TXD RXD RS MAX3050ASA CAN TRANSCEIVER CANH CANL GND CAN BUS Programmable-Gain Amplifier (G = 1, 2, 4, 8, 16, 32) 12-Bit DAC with Buffered, Analog Voltage Output Internal, 3.3V- or 5V-Output Linear Regulator for Digital Core Noncontacting Linear, Rotary, and Angular Position Sensing Features Applications 12-Bit, 142ksps to 500ksps SAR ADC Built-In 3V and 5V Voltage Monitors Local Die and Remote Temperature Sensing Hardware Multiply and Accumulate CAN 2.0B and UART/LIN Interfaces CAN or LIN-Based Automotive Sensors High-Precision, Integrated Digital Compass 7

8 Development Tools Simplify Design-In A complete set of development tools for the MAXQ and 8051 µcs is available from Dallas Semiconductor and third-party vendors. Development tools include assemblers, compilers, integrated development environments, evaluation kits, reference designs, and programmers. MAXQ Software Tools MAX-IDE is a Dallas Semiconductor assembler-based IDE available as a free download at The MAX-IDE supports all MAXQ products. Project-Based Development Debug Software In-System or with the Integrated Simulator Macro Assembler Integrated FLASH/RAM Programmer IAR s Embedded Workbench for MAXQ A Tool Suite for Building and Debugging Complete Embedded Applications IDE with Project Management Tools and Editor Optimizing Compiler Supporting ANSI C, Relocating Assembler, a Linker, and Librarian In-Circuit Emulator (ICE) Debugger Support Flash Loader Run-Time Libraries RTOS-Aware Debugging on Hardware CMX Systems CMX-RTX A Real-Time Operating System (RTOS) for the MAXQ CMX-RTX is a fullfeatured, preemptive RTOS featuring small code footprint, fast context switching, and low interrupt latency. Rowley Associates CrossWorks for MAXQ A Full-Featured Toolset ANSI C Compiler, Macro Assembler and a Linker/Locator Software Libraries MAXQ20 Core Simulator Flash Loader JTAG Debugger CrossStudio IDE Phyton s Phyton-MQ A Complete Development Toolset IDE with Debug Support and Simulator Macro Assembler, ANSI C Compiler Supports MAXQ10- and MAXQ20- Based µcs MAXQ Hardware Tools Hardware development tools for MAXQ and 8051 products range from adapter sockets and evaluation (EV kit) boards to full-function ICE. EV kit board schematics are a convenient reference design. A Complete List of Manufacturers and Tools Is Available at: 8

9 New Titles Added to Library of µc Application Notes Protected EEPROM Operations in MAXQ Environments Nonvolatile memory is essential for embedded microcontroller applications. This application note explains how to use a transaction-based commit-rollback mechanism to protect the contents of an external EEPROM memory device. While targeted for an external memory device, the principles presented in this article are equally applicable to the internal EEPROM in many MAXQ microcontrollers. ( The MAXQ Microcontroller in Action: Designing a Bicycle Computer with the MAXQ2000 Built for an avid cyclist who dreams of winning the Tour de France, the compact bicycle computer can help a rider through workouts. The bicycle computer is based on a MAXQ2000 microcontroller, and includes a speedometer, clock, thermometer, humidity sensor, heart-rate monitor, and stopwatch. ( Getting Started with Rowley CrossWorks and the MAXQ2000 Evaluation Kit The MAXQ2000 is a powerful, low-cost, low-power microcontroller with considerable peripheral support for many applications. With the support of Rowley Associates' powerful CrossWorks tools for the MAXQ development environment, complex applications can be written in C and debugged. As an application, a simple running counter on an LCD illustrates the functions of both the MAXQ2000 Evaluation Kit and CrossWorks. ( Developing FFT Applications with Low-Power Microcontrollers As low-power microcontrollers (µcs) begin including peripherals that were formerly reserved for larger microprocessors, ASICs, and DSPs, new opportunities for computing complex algorithms at low power levels are becoming possible. This article describes a Fast Fourier Transform (FFT) application (developed using a low-power µc) that includes a single-cycle hardware multiplier. ( Remote Keyless Entry with the MAXQ3212 The MAXQ family of microcontrollers is designed to be electrically quiet for the best integration with analog circuitry, including RF receivers. This article discusses the components needed to make a remote keyless entry (RKE) receiver using the MAXQ3212 microcontroller and the MAX1473 receiver. ( MAXQ Microcontroller Drives a Smart and Intelligent 4-20mA Transmitter The 4-20mA current loop is a common technique for transmitting sensor information in industrial processmonitoring applications. (Sensors measure physical parameters such as temperature, pressure, speed, and liquid flowrates.) Current-loop signals are relatively insensitive to noise, and their power can be derived from a remotely supplied voltage. This makes current loops particularly useful when the information must travel a long distance to a remote location. ( Visit the µc Library Our library of µc application notes is growing constantly. We showed you just a few of the more recent titles here. For a catalog of titles and fast access to article abstracts, go to the library. Visit and click on Microcontrollers. 9