The DB9-USB Family of. UART Converter Modules. Datasheet

Transcription

1 Future Technology Devices International Ltd The DB9-USB Family of UART Converter Modules Datasheet Document Reference No.: FT_ Version 2.0 Issue Date: Future Technology Devices International Ltd (FTDI) Unit 1, 2 Seaward Place, Centurion Business Park, Glasgow, G41 1HH, United Kingdom Tel.: +44 (0) Fax: + 44 (0) (Support): support1@ftdichip.com Web: Use of FTDI devices in life support and/or safety applications is entirely at the user s risk, and the user agrees to defend, indemnify and hold harmless FTDI from any and all damages, claims, suits or expense resulting from such use. Copyright 2011 Future Technology Devices International Limited

2 Document Reference No.: FT_ DB9-USB Datasheet Version 2.0 Clearance No.: FTDI# Introduction 1.1 The DB9-USB Family of UART Converter Modules The DB9-USB connector modules can be used to upgrade an RS232 port to an active USB port without the need to redesign the PCB. The DB9-USB family consist of 6 modules. Two of these operate at RS232 voltage levels, while four of them operate at digital voltage levels (a choice of 5V or 3.3V). Each is available to replace either a male or a female DB Functional Description DB9-USB modules can be used to upgrade a UART port of a device to an active USB port without the need for redesigning the device s PCB. These active connectors contain all the USB to UART (and viceversa) conversion electronics and are designed to fit directly into the same PCB footprint as a PC compatible UART DB9 connector. The FTDI DB9-USB-RS232 modules are available in two types DB9-USB-RS232-M and DB9-USB-RS232-F. A DB9-USB-RS232-M can be used to replace a male DB9 connector that is wired in a PC compatible RS232 manner. This module operates at RS232 signal levels. A DB9-USB-RS232-F can be used to replace a female DB9 connector that is wired in a PC compatible RS232 manner. This module operates at RS232 signal levels. The FTDI DB9-USB-D3 modules are available in two types DB9-USB-D3-M and DB9-USB-D3-F. A DB9-USB-D3-M can be used to replace a male DB9 connector that is wired in a PC compatible RS232 manner. This module operates at 3.3V signal levels. A DB9-USB-D3-F can be used to replace a female DB9 connector that is wired in a PC compatible RS232 manner. This module operates at 3.3V signal levels. The FTDI DB9-USB-D5 modules are available in two types DB9-USB-D5-M and DB9-USB-D5-F. A DB9-USB-D5-M can be used to replace a male DB9 connector that is wired in a PC compatible RS232 manner. This module operates at 5.0V signal levels. A DB9-USB-D5-F can be used to replace a female DB9 connector that is wired in a PC compatible RS232 manner. This module operates at 5.0V signal levels. The purposes of these modules is to provide a simple method of adapting legacy serial devices with UART interfaces to modern USB ports by replacing the DB9 connector with this miniaturised module which closely resembles a DB9 connector. This is accomplished by incorporating the industry standard FTDI FT232R USB-Serial Bridge IC. The RS232 level DB9-USB modules include an RS232 level transceiver. Figure 1.1 DB9-USB Family Copyright 2011 Future Technology Devices International Limited 1

3 Document Reference No.: FT_ DB9-USB Datasheet Version 2.0 Clearance No.: FTDI# 130 DB9-USB modules use a standard USB-MINI-B connector for connection to an upstream host or hub port. RS232 Level: RS232 level signals, includes modem handshake signals, and capable of transmitting data at rates up to 1 Mega Baud. Digital Level: 3.3V or 5V level signals, includes modem handshake signals, and capable of transmitting data at rates up to 3 Mega Baud. DB9-USB modules require USB device drivers, available free from which are used to make DB9-USB modules appear as a Virtual COM Port (VCP). This allows existing serial communications software, such as HyperTerminal, to exchange data through the DB9-USB to a legacy UART peripheral device. 1.3 Background In the long distant past, there was no standard defined for the connections on a DB9 connector when it was used as an RS232 interface. That changed when IBM introduced the PC-AT. This introduced a generally accepted DB9 RS232 standard and PC peripherals adopted the same pin-out using a 1-to-1 cable connection between the PC and the peripheral. DB9-USB modules have adopted this standard. The DB9 connector wire schemes used by this module either the standard male or standard female wire configuration. Note that NOT ALL peripheral adopted this standard so it is important for the user to check against the pin-out used for the male and female DB9-USB connectors. Note: DB9 connectors are also known as DE9 connector since it consists of 9 pins in a size E shell. However DE9 connectors are more commonly referred to as DB9 connector. Copyright 2011 Future Technology Devices International Limited 2

4 Document Reference No.: FT_ DB9-USB Datasheet Version 2.0 Clearance No.: FTDI# Block Diagrams DB9 Module DB9 Module USB Mini B Client Connector FTDI FT232R USB Serial Bridge RS232 Level Shifter DB9 PCB Decal Figure 1.2 DB9-USB-RS232 Block Diagram USB Mini B Client Connector DB9 Module DB9 Module VIO 3.3V VIO 3.3V 3V3OUT 3V3OUT FTDI FTDI FT232R USB FT232R USB Serial Bridge 3.3V TTL/CMOS 3.3V TTL/CMOS UART DB9 PCB Decal Figure 1.3 DB9-USB-D3 Block Diagram USB Mini B Client Connector 5V 5V VIO DB9 Module DB9 Module VIO FTDI FT232R USB Serial Bridge 5V TTL/CMOS 5V TTL/CMOS UART DB9 PCB Decal Figure 1.4 DB9-USB-D5 Block Diagram Block description USB Mini B Client Connector This connector provides the interface for connection to a USB Host or Hub port. FTDI FT232R The FTDI FT232R provides the USB-to-Serial conversion. Operating system device drivers are required in order to operate with the FT232R to provide the Virtual COM Port serial functionality. RS232 Level Shifter The RS232 level shifter converts the signals provided by the FT232R into the voltage levels required by application RS232 interface. DB9-USB PCB Footprint The DB9-USB pin-out is configured to match the industry standard DB9 footprint. See section 3. Copyright 2011 Future Technology Devices International Limited 3

5 Document Reference No.: FT_ DB9-USB Datasheet Version 2.0 Clearance No.: FTDI# Features Adds one USB serial port by connecting to the RS232 DB9 footprint of a device Easy placement for an standard Male and Female RS232 DB9 footprint of a device A selection of RS232, 3.3V or 5V UART signal levels. Works with USB 1.1 & 2.0 Host and Hub ports Industry Standard FTDI chip set & device drivers for maximum compatibility Microsoft Windows WHQL-certified, Mac OS X, Linux and Windows CE device drivers Installs as a standard Windows COM port 128 byte transmit buffer, 256 byte receive buffer UART data signals: TxD, RxD, RTS, CTS, DSR, DTR, DCD, RI, GND Powered by USB port. No external power adapter required. Serial port speed up to 1Mbps (RS232 levels) or 3Mbps (3.3V/5V levels) Serial Communication Parameters o Parity: None, Even, Odd o Data bits: 7, 8 o None Flow control: RTS/CTS, DSR/DTR, X-ON/X-OFF, Operating temperature of -40 C to +85 C

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7 MAX232, MAX232I DUAL EIA-232 DRIVERS/RECEIVERS SLLS047I FEBRUARY 1989 REVISED OCTOBER 2002 D Meet or Exceed TIA/EIA-232-F and ITU Recommendation V.28 D Operate With Single 5-V Power Supply D Operate Up to 120 kbit/s D Two Drivers and Two Receivers D ±30-V Input Levels D Low Supply Current... 8 ma Typical D Designed to be Interchangeable With Maxim MAX232 D ESD Protection Exceeds JESD V Human-Body Model (A114-A) D Applications TIA/EIA-232-F Battery-Powered Systems Terminals Modems Computers MAX D, DW, N, OR NS PACKAGE MAX232I... D, DW, OR N PACKAGE (TOP VIEW) C1+ V S+ C1 C2+ C2 VS T2OUT R2IN V CC GND T1OUT R1IN R1OUT T1IN T2IN R2OUT description/ordering information The MAX232 is a dual driver/receiver that includes a capacitive voltage generator to supply EIA-232 voltage levels from a single 5-V supply. Each receiver converts EIA-232 inputs to 5-V TTL/CMOS levels. These receivers have a typical threshold of 1.3 V and a typical hysteresis of 0.5 V, and can accept ±30-V inputs. Each driver converts TTL/CMOS input levels into EIA-232 levels. The driver, receiver, and voltage-generator functions are available as cells in the Texas Instruments LinASIC library. TA 0 C to 70 C 40 C to 85 C PDIP (N) SOIC (D) SOIC (DW) SOP (NS) PDIP (N) SOIC (D) SOIC (DW) ORDERING INFORMATION PACKAGE Tube Tube Tape and reel Tube Tape and reel Tape and reel Tube Tube Tape and reel Tube Tape and reel ORDERABLE PART NUMBER MAX232N MAX232D MAX232DR MAX232DW MAX232DWR MAX232NSR MAX232IN MAX232ID MAX232IDR MAX232IDW MAX232IDWR TOP-SIDE MARKING MAX232N MAX232 MAX232 MAX232 MAX232IN MAX232I MAX232I Package drawings, standard packing quantities, thermal data, symbolization, and PCB design guidelines are available at Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. LinASIC is a trademark of Texas Instruments. PRODUCTION DATA information is current as of publication Copyright 2002, Texas Instruments Incorporated date. Products conform to specifications per the terms of Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. POST OFFICE BOX DALLAS, TEXAS

8 MAX232, MAX232I DUAL EIA-232 DRIVERS/RECEIVERS SLLS047I FEBRUARY 1989 REVISED OCTOBER 2002 Function Tables EACH DRIVER INPUT TIN L H OUTPUT TOUT H L H = high level, L = low level EACH RECEIVER INPUT RIN L H OUTPUT ROUT H L H = high level, L = low level logic diagram (positive logic) T1IN T2IN R1OUT R2OUT T1OUT T2OUT R1IN R2IN 2 POST OFFICE BOX DALLAS, TEXAS 75265

9 MAX232, MAX232I DUAL EIA-232 DRIVERS/RECEIVERS SLLS047I FEBRUARY 1989 REVISED OCTOBER 2002 absolute maximum ratings over operating free-air temperature range (unless otherwise noted) Input supply voltage range, V CC (see Note 1) V to 6 V Positive output supply voltage range, V S V CC 0.3 V to 15 V Negative output supply voltage range, VS V to 15 V Input voltage range, VI: Driver V to VCC V Receiver ±30 V Output voltage range, V O: T1OUT, T2OUT VS 0.3 V to V S V R1OUT, R2OUT V to VCC V Short-circuit duration: T1OUT, T2OUT Unlimited Package thermal impedance, JA (see Note 2): D package C/W DW package C/W N package C/W NS package C/W Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds C Storage temperature range, Tstg C to 150 C Stresses beyond those listed under absolute maximum ratings may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated under recommended operating conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability. NOTE 1: All voltage values are with respect to network ground terminal. 2. The package thermal impedance is calculated in accordance with JESD recommended operating conditions VCC VIH VIL Supply voltage High-level input voltage (T1IN,T2IN) Low-level input voltage (T1IN, T2IN) MIN NOM MAX UNIT V V 0.8 V R1IN, R2IN Receiver input voltage ±30 V TA Operating free air temperature MAX232 MAX232I electrical characteristics over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted) (see Note 3 and Figure 4) ICC Supply current All typical values are at VCC = 5 V and TA = 25 C. PARAMETER TEST CONDITIONS MIN TYP MAX UNIT NOTE 3: Test conditions are C1 C4 = 1 F at VCC = 5 V ± 0.5 V. VCC = 5.5 V, TA = 25 C All outputs open, C 8 10 ma POST OFFICE BOX DALLAS, TEXAS

10 MAX232, MAX232I DUAL EIA-232 DRIVERS/RECEIVERS SLLS047I FEBRUARY 1989 REVISED OCTOBER 2002 DRIVER SECTION electrical characteristics over recommended ranges of supply voltage and operating free-air temperature range (see Note 3) VOH VOL ro IOS IIS High-level output voltage Low-level output voltage Output resistance Short-circuit output current Short-circuit input current PARAMETER TEST CONDITIONS MIN TYP MAX UNIT T1OUT, T2OUT T1OUT, T2OUT RL = 3 k& to GND RL = 3 k& to GND T1OUT, T2OUT VS+ = VS = 0, VO = ±2 V T1OUT, T2OUT VCC = 5.5 V, VO = 0 T1IN, T2IN VI = 0 All typical values are at VCC = 5 V, TA = 25 C. The algebraic convention, in which the least positive (most negative) value is designated minimum, is used in this data sheet for logic voltage levels only. Not more than one output should be shorted at a time. NOTE 3: Test conditions are C1 C4 = 1 F at VCC = 5 V ± 0.5 V. switching characteristics, V CC = 5 V, T A = 25 C (see Note 3) SR SR(t) Driver slew rate Driver transition region slew rate Data rate NOTE 3: Test conditions are C1 C4 = 1 F at VCC = 5 V ± 0.5 V ±10 V 5 V & ma 200 A PARAMETER TEST CONDITIONS MIN TYP MAX UNIT RECEIVER SECTION RL = 3 k& to 7 k&, See Figure 2 See Figure 3 One TOUT switching electrical characteristics over recommended ranges of supply voltage and operating free-air temperature range (see Note 3) VOH VOL VIT+ VIT High-level output voltage Low-level output voltage Receiver positive-going input threshold voltage Receiver negative-going input threshold voltage V/ s PARAMETER TEST CONDITIONS MIN TYP MAX UNIT R1OUT, R2OUT R1OUT, R2OUT IOH = 1 ma IOL = 3.2 ma R1IN, R2IN VCC = 5 V, TA = 25 C V/ s kbit/s 3.5 V 0.4 V V R1IN, R2IN VCC = 5 V, TA = 25 C V Vhys Input hysteresis voltage R1IN, R2IN VCC = 5 V V ri Receiver input resistance R1IN, R2IN VCC = 5, TA = 25 C k& All typical values are at VCC = 5 V, TA = 25 C. The algebraic convention, in which the least positive (most negative) value is designated minimum, is used in this data sheet for logic voltage levels only. NOTE 3: Test conditions are C1 C4 = 1 F at VCC = 5 V ± 0.5 V. switching characteristics, VCC = 5 V, TA = 25 C (see Note 3 and Figure 1) PARAMETER tplh(r) Receiver propagation delay time, low- to high-level output tphl(r) Receiver propagation delay time, high- to low-level output NOTE 3: Test conditions are C1 C4 = 1 F at VCC = 5 V ± 0.5 V. TYP UNIT 500 ns 500 ns 4 POST OFFICE BOX DALLAS, TEXAS 75265

11 MAX232, MAX232I DUAL EIA-232 DRIVERS/RECEIVERS PARAMETER MEASUREMENT INFORMATION VCC SLLS047I FEBRUARY 1989 REVISED OCTOBER 2002 Pulse Generator (see Note A) R1IN or R2IN R1OUT or R2OUT RL = 1.3 k& See Note C TEST CIRCUIT CL = 50 pf (see Note B) δ10 ns δ10 ns Input 10% tphl 90% 90% 50% 50% 10% 500 ns tplh 3 V 0 V Output 1.5 V 1.5 V WAVEFORMS VOH VOL NOTES: A. The pulse generator has the following characteristics: ZO = 50 &, duty cycle δ 50%. B. CL includes probe and jig capacitance. C. All diodes are 1N3064 or equivalent. Figure 1. Receiver Test Circuit and Waveforms for tphl and tplh Measurements POST OFFICE BOX DALLAS, TEXAS 75265

12 a Hardware Design SIM900_HD_V1.01

13 SIM900 Hardware Design Document Title: Version: Date: Status: Document Control ID: SIM900 Hardware Design Release SIM900_HD_V1.01 General Notes SIMCom offers this information as a service to its customers, to support application and engineering efforts that use the products designed by SIMCom. The information provided is based upon requirements specifically provided to SIMCom by the customers. SIMCom has not undertaken any independent search for additional relevant information, including any information that may be in the customer s possession. Furthermore, system validation of this product designed by SIMCom within a larger electronic system remains the responsibility of the customer or the customer s system integrator. All specifications supplied herein are subject to change. Copyright This document contains proprietary technical information which is the property of SIMCom Limited, copying of this document and giving it to others and the using or communication of the contents thereof, are forbidden without express authority. Offenders are liable to the payment of damages. All rights reserved in the event of grant of a patent or the registration of a utility model or design. All specification supplied herein are subject to change without notice at any time. Copyright Shanghai SIMCom Wireless Solutions Ltd SIM900_HD_V

14 SIM900 Hardware Design Contents Contents...3 Version history Introduction Related Documents Terms and Abbreviations SIM900 Overview SIM900 Key Features SIM900 Functional Diagram SIM900 Evaluation Board Application Interface SIM900 Pin Description Operating Modes Power Supply Power Supply Pins Minimizing Power Losses Monitoring Power Supply Power Up and Power Down Scenarios Turn on SIM Turn Off SIM Restart SIM900 Using the PWRKEY Pin Power Saving Minimum Functionality Mode Sleep Mode (Slow Clock Mode) Wake Up SIM900 from SLEEP Mode Summary of State Transitions (except SLEEP mode) RTC Backup Serial Interfaces Function of serial port & debug port supporting...33

15 3.8.2 Software Upgrade and Software Debug Audio Interfaces Speaker Interface Configuration Microphone Interfaces Configuration Earphone Interface Configuration Referenced Electronic Characteristic SIM Card Interface SIM Card Application Design Considerations for SIM Card Holder LCD Display Interface Keypad Interface...42 SIM900_HD_V

16 SIM900 Hardware Design 3.13 ADC Behaviors of the RI Network Status Indication General Purpose Input Output (GPIO) External Reset PWM I2C Bus Antenna Interface Module RF Output Power Module RF Receive Sensitivity Module Operating Frequencies Electrical, Reliability and Radio Characteristics Absolute Maximum Ratings Operating Temperatures Power Supply Ratings Current Consumption Electro-Static Discharge Mechanics Mechanical Dimensions of SIM Top and Bottom View of the SIM PIN Assignment of SIM The Ramp-Soak-Spike Reflow Profile of SIM SIM900_HD_V

17 SIM900 Hardware Design Table Index TABLE 1: RELATED DOCUMENTS... 8 TABLE 2: TERMS AND ABBREVIATIONS... 8 TABLE 3: SIM900 KEY FEATURES TABLE 4: CODING SCHEMES AND MAXIMUM NET DATA RATES OVER AIR INTERFACE TABLE 5: PIN DESCRIPTION TABLE 6: OVERVIEW OF OPERATING MODES TABLE 7: PIN DEFINITION OF THE SERIAL INTERFACES TABLE 8: LOGIC LEVELS OF THE SERIAL PORT AND DEBUG PORT TABLE 9: PIN DEFINE OF THE AUDIO INTERFACE TABLE 10: MIC INPUT CHARACTERISTICS TABLE 11: AUDIO OUTPUT CHARACTERISTICS TABLE 12: PIN DEFINE OF THE SIM INTERFACE TABLE 13: PIN DESCRIPTION (AMPHENOL SIM CARD HOLDER) TABLE 14: PIN DESCRIPTION (MOLEX SIM CARD HOLDER) TABLE 15: PIN DEFINE OF THE LCD INTERFACE TABLE 16: PIN DEFINE OF THE KEYPAD INTERFACE TABLE 17: ADC SPECIFICATION TABLE 18: BEHAVIOURS OF THE RI TABLE 19: WORKING STATE OF THE NETLIGHT TABLE 20: PIN DEFINE OF THE GPIO INTERFACE TABLE 21: PIN DEFINE OF THE PWM TABLE 22: PIN DEFINE OF THE I2C BUS TABLE 23: SIM900 CONDUCTED RF OUTPUT POWER TABLE 24: SIM900 CONDUCTED RF RECEIVE SENSITIVITY TABLE 25: SIM900 OPERATING FREQUENCIES TABLE 26: ABSOLUTE MAXIMUM RATINGS TABLE 27: SIM900 OPERATING TEMPERATURE TABLE 28: SIM900 POWER SUPPLY RATINGS TABLE 29: SIM900 CURRENT CONSUMPTION TABLE 30: THE ESD ENDURE STATUE MEASURED TABLE (TEMPERATURE: 25, HUMIDITY:45% ) TABLE 31: PIN ASSIGNMENT... 55