Microchip PIC32 M2M GSM/GPRS/GPS解决方案

Microchip公司的M2M PICtail Plus子板采用高性能PIC32 MCU,是基于u-blox 公司的GPS和GSM/GPRS模块,具有许多特性,包括GSM,GPRS和GPS,能很容易创建具有定位意识的低成本M2M应用.本文介绍了PIC32 MCU主要特性,方框图以及M2M PICtail Plus子板主要特性和功能,方框图以及电路图,PCB布局图.
PIC32MX3XX/4XX: High-Performance, General Purpose and USB, 32-bit Flash Microcontrollers
PIC32 MCU主要特性:
High-Performance 32-bit RISC CPU:
• MIPS32® M4K® 32-bit core with 5-stage pipeline
• 80 MHz maximum frequency
• 1.56 DMIPS/MHz (Dhrystone 2.1) performance at 0 wait state Flash access
• Single-cycle multiply and high-performance divide unit
• MIPS16e® mode for up to 40% smaller code size
• Two sets of 32 core register files (32-bit) to reduce interrupt latency
• Prefetch Cache module to speed execution from Flash
Microcontroller Features:
• Operating temperature range of -40ºC to +105ºC
• Operating voltage range of 2.3V to 3.6V
• 32K to 512K Flash memory (plus an additional 12 KB of boot Flash)
• 8K to 32K SRAM memory
• Pin-compatible with most PIC24/dsPIC® DSC devices
• Multiple power management modes
• Multiple interrupt vectors with individually programmable priority
• Fail-Safe Clock Monitor Mode
• Configurable Watchdog Timer with on-chip Low-Power RC Oscillator for reliable operation
Peripheral Features:
• Atomic SET, CLEAR and INVERT operation on select peripheral registers
• Up to 4-channel hardware DMA with automatic data size detection
• USB 2.0-compliant full-speed device and On-The-Go (OTG) controller
• USB has a dedicated DMA channel
• 3 MHz to 25 MHz crystal oscillator
• Internal 8 MHz and 32 kHz oscillators
• Separate PLLs for CPU and USB clocks
• Two I2C™ modules
• Two UART modules with:
- RS-232, RS-485 and LIN ...