MIcrochip公司的PIC32系列是高性能通用和USB的閃存微控制器,其中的32位RISCCPU采用5級流水線的MIPS M4K 32位內核,CPU最大工作頻率80MHz,具有1.56 DMIPS/MHz (Dhrystone 2.1),而MCU工作電壓2.3V-3.6V,32KB-512KB閃存(另加12KB引導閃存)以及8K-32K SRAM存儲器.器件具有豐富外設和模擬特性,主要用在消費類電子,工業,醫療電子和汽車電子.本文介紹了PIC32 MCU主要特性,方框圖,以及PIC32 MCU入門開發套件主要特性,方框圖,電路圖和材料廠清單.
Microchip’s 32-bit portfolio with the MIPS® M4K® offers high performance microcontrollers, and all the tools needed to develop your embedded project. With free software, low cost development tools, and pin/peripheral compatibility from 16-bit product lines, PIC32 MCUs shorten time to market and allow your designs to grow. PIC32 gives your application the processing power, memory and peripherals your design needs!
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 support
- IrDA® with on-chip hardware encoder and decoder
• Up to two SPI modules
• Parallel Master and Slave Port (PMP/PSP) with 8-bit and 16-bit data and up to 16 address lines
• Hardware Real-Time Clock and Calendar (RTCC)
• Five 16-bit Timers/Counters (two 16-bit pairs combine to create two 32-bit timers)
• Five capture inputs
• Five compare/PWM outputs
• Five external interrupt pins
• High-Speed I/O pins capable of toggling at up to 80 MHz
• High-current sink/source (18 mA/18 mA) on all I/O pins
• Configurable open-drain output on digital I/O pins
Debug Features:
• Two programming and debugging Interfaces:
- 2-wire interface with unintrusive access and real-time data exchange with application
- 4-wire MIPS® standard enhanced JTAG interface
• Unintrusive hardware-based instruction trace
• IEEE Standard 1149.2-compatible (JTAG) boundary scan
Analog Features:
• Up to 16-channel 10-bit Analog-to-Digital Converter:
- 1000 ksps conversion rate
- Conversion available during Sleep, Idle
• Two Analog Comparators
PIC32 MCU主要應用:
These new MCUs include a host of additional useful features that make them suitable for applications in the consumer, industrial, medical and automotive markets.
圖1.PIC32 MCU方框圖
PIC32 MCU入門開發套件
PIC32 Starter Kit provides a low-cost, modular development system for Microchip’s line of 32-bit microcontrollers (MCUs).
The starter kit comes preloaded with demonstration software for the user to explore the new features of the PIC32. It is also expandable through a modular expansion interface, which allows the user to extend its functionality. The starter kit also supplies on-board circuitry for full debug and programming capabilities.
The PIC32 Starter Kit contains the following items:
• PIC32 Starter Kit Board
• USB Mini-B cable
圖2.PIC32 MCU入門開發套件外形圖
PIC32 MCU入門開發套件主要特性:
The board includes these key features, as indicated in the diagram:
1. PIC32MX360F512L 32-bit microcontroller.
2. Green power indicator LED.
3. Regulated +3.3V power supply for powering the starter kit board via USB or expansion board.
4. On-board crystal for precision microcontroller clocking (8 MHz).
5. USB connectivity for on-board debugger communications.
6. PIC18LF4550 USB microcontroller for on-board debugging.
7. Orange Debug indicator LED.
8. Three push-button switches for user-defined inputs.
9. Three user-defined indicator LEDs.
10. Connector for connecting various expansion boards (on the underside of board).
圖3.PIC32 MCU入門開發板元件布局圖
圖4.PIC32 MCU入門開發板方框圖
圖5.PIC32 MCU入門開發板電路圖: PIC32MX CPU
圖6.PIC32 MCU入門開發板電路圖: PIC18LF4550調試CPU
圖7.PIC32 MCU入門開發板電路圖:應用板連接器
圖8.PIC32 MCU入門開發板電路圖:開關和LED
圖9.PIC32 MCU入門開發板電路圖:電源
PIC32 MCU入門開發板材料清單:
詳情請見:
http://ww1.microchip.com/downloads/en/DeviceDoc/61143H.pdf
和
http://ww1.microchip.com/downloads/en/DeviceDoc/61159B.pdf
