</a>MSP430" title="MSP430">MSP430" title="MSP430">MSP430F22xx系列是超低功耗混合信號微控制器,集成了兩個16位計時器,通用串行通信接口,10位ADC和基準電壓源以及數據傳輸控制器(DTC),兩個通用運放.器件工作電壓1.8V-3.6V, 1 MHz, 2.2 V工作模式的功耗為270uA,待機功耗為0.7uA,主要用于手持設備.本文介紹了MSP430F22xx主要特性,功能方框圖,以及eZ430-TMS37157無線RFID開發套件主要特性, eZ430-RF USB調試接口電路圖, eZ430-TMS37157目標板電路圖和RFID基站電路圖等.

The Texas Instruments MSP430 family of ultra-low-power microcontrollers consist of several devices featuring different sets of peripherals targeted for various applications. The architecture, combined with five low-power modes is optimized to achieve extended battery life in portable measurement applications. The device features a powerful 16-bit RISC CPU, 16-bit registers, and constant generators that contribute to maximum code efficiency. The digitally controlled oscillator (DCO) allows wake-up from low-power modes to active mode in less than 1 µs.

The MSP430F22xx series is an ultra-low-power mixed signal microcontroller with two built-in 16-bit timers, a universal serial communication interface, 10-bit A/D converter with integrated reference and data transfer controller (DTC), two general-purpose operational amplifiers in the MSP430F22x4 devices, and 32 I/O pins.

MSP430F22xx主要特性:

Low Supply Voltage Range: 1.8 V to 3.6 V

Ultra-Low Power Consumption

Active Mode: 270 µA at 1 MHz, 2.2 V

Standby Mode: 0.7 µ

Off Mode (RAM Retention): 0.1 µA

Ultra-Fast Wake-Up From Standby Mode in Less Than 1 µs

16-Bit RISC Architecture, 62.5-ns Instruction Cycle Time

Basic Clock Module Configurations

Internal Frequencies up to 16 MHz With Four Calibrated Frequencies to %plusm;1%

Internal Very-Low-Power Low-Frequency Oscillator

32-kHz Crystal

High-Frequency (HF) Crystal up to 16 MHz

Resonator

External Digital Clock Source

External Resistor

16-Bit Timer_A With Three Capture/Compare Registers

16-Bit Timer_B With Three Capture/Compare Registers

Universal Serial Communication Interface

Enhanced UART Supporting Auto-Baudrate Detection (LIN)

IrDA Encoder and Decoder

圖1.MSP430F22x4功能方框圖

eZ430-TMS37157無線開發套件

The eZ430-TMS37157 is a complete USB-based MSP430 wireless development tool providing the hardware and software to evaluate the MSP430F2274 microcontroller and the TMS37157 passive low-frequency interface (PaLFI) RFID transponder.

The eZ430-TMS37157 uses Code Composer Essentials (CCE) or IAR Embedded Workbench Integrated Development Environment (IDE) to write, download, and debug an application. The debugger is unobtrusive, allowing the user to run an application at full speed with both hardware breakpoints and single stepping available while consuming no extra hardware resources.

The eZ430-TMS37157 target board is an out-of-the box wireless system that may be used with the USB debugging interface, as a stand-alone system with or without external sensors, or  may be incorporated into an existing design.

The new USB debugging interface enables the eZ430-TMS37157 to remotely send and receive data from a PC using the MSP430 application UART.

eZ430-TMS37157無線開發套件主要特性:

• USB debugging and programming interface featuring a driverless installation and application backchannel

• 14 available development pins

• Highly integrated, ultra-low-power MSP430 MCU with 16-MHz performance

• Two general-purpose digital I/O pins connected to green and red LEDs for visual feedback

• Interruptible push button for user feedback

圖2.eZ430-TMS37157外形圖

圖3. eZ430-RF USB調試接口電路圖(1)

圖4. eZ430-RF USB調試接口電路圖(2)

圖5.eZ430-TMS37157目標板電路圖

圖6.eZ430-TMS37157 RFID基站電路圖

圖7.eZ430-TMS37157 RFID基站接口板連接器電路圖

圖8.eZ430-TMS37157 RFID基站接口板電路圖
詳情請見:
http://focus.ti.com/lit/ds/symlink/msp430f2274.pdf
和
http://focus.ti.com/lit/ug/slau281b/slau281b.pdf