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Digilent Microchip PIC32MX795F512 32位MCU開發方案

發布時間:2012-2-9 17:32    發布者:1770309616
Microchip公司的PIC32MX795F512是集成了USB,CAN和以太網的32位閃存MCU,32位RISC CPU最高頻率80MHz,MCU工作電壓2.3V-3.6V,具有64KB-512KB閃存和16KB到128KB SRAM,而Digilent公司的Cerebot MX7cK MCU開發板采用PIC32MX795F512L,和Pmod™外設模塊兼容,并適合和Microchip MPLAB® IDE工具一起使用,也適合和chipKIT™ MPIDE開發環境一起使用.本文首先介紹了PIC32MX795F512主要特性和方框圖,接著介紹Cerebot MX7cK MCU開發板主要特性和詳細電路圖.

The Cerebot MX7cK is a microcontroller development board based on the Microchip PIC32MX795F512L.

PIC32MX795F512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 zero 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 voltage range of 2.3V to 3.6V
• 64K to 512K Flash memory (plus an additional 12 KB of Boot Flash)
• 16K to 128K 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 8-channels of hardware DMA with automatic data size detection
• USB 2.0-compliant full-speed device and On-The-Go (OTG) controller:
- Dedicated DMA channels
• 10/100 Mbps Ethernet MAC with MII and RMII interface:
- Dedicated DMA channels
• CAN module:
- 2.0B Active with DeviceNet™ addressing support
- Dedicated DMA channels
• 3 MHz to 25 MHz crystal oscillator

Peripheral Features (Continued):

• Internal 8 MHz and 32 kHz oscillators
• Six UART modules with:
- RS-232, RS-485 and LIN support
- IrDA® with on-chip hardware encoder and decoder
• Up to four SPI modules
• Up to five I2C™ modules
• Separate PLLs for CPU and USB clocks
• 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 Joint Test Action Group (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:
- 1 Msps conversion rate
- Conversion available during Sleep and Idle
• Two Analog Comparators

圖1. PIC32MX5XX/6XX/7XX系列框圖

Cerebot MX7cK MCU開發板

The Cerebot MX7cK is a microcontroller development board based on the Microchip PIC32MX795F512L, a member of the 32-bit PIC32 microcontroller family. It is compatible with Digilent’s line of Pmod™ peripheral modules, and is suitable for use with the Microchip MPLAB® IDE tools. The Cerebot MX7cK is also compatible for use with the chipKIT™ MPIDE development environment.

ChipKIT and MPIDE is a PIC32 based system compatible with many existing Arduino™ code examples,reference materials and other resources.

The Cerebot MX7cK is designed to be easy to use and suitable for use by anyone from beginners to advanced users for experimenting with embedded control and network communications application. A built in programming/debugging circuit compatible with the Microchip MPLAB® IDE is provided, so no additional hardware is required for use with MPLAB. The kit contains everything needed to start developing embedded applications using either the MPLAB® IDE or the MPIDE.

The Cerebot MX7cK provides 52 I/O pins that support a number of peripheral functions, such as UART, SPI and I2C™ ports as well as five pulse width modulated outputs and five external interrupt inputs. Its network and communications features also include a 10/100 Ethernet interface, Full Speed USB 2.0 OTG interface, and dual CAN network interfaces.

Ten of the I/O pins can be used as analog inputs in addition to their use as digital inputs and outputs.

The Cerebot MX7cK can be powered in various ways via USB, or using an external AC-DC power adapter.

Cerebot MX7cK MCU開發板主要特性:

a PIC32MX795F512L microcontroller

support for programming and debugging within the Microchip MPLAB development environment

six Pmod connectors for Digilent peripheral module boards

10/100 Ethernet

USB 2.0 Device, Host, and OTG support

two CAN network interfaces

three push buttons

four LEDs

multiple power supply options, including USB powered

ESD protection and short circuit protection for all I/O pins.

圖2.Cerebot MX7cK MCU開發板外形圖

圖3.Cerebot MX7cK MCU開發板方框圖

圖4.Cerebot MX7cK MCU開發板電路圖(1)

圖5.Cerebot MX7cK MCU開發板電路圖(2)

圖6.Cerebot MX7cK MCU開發板電路圖(3)

圖7.Cerebot MX7cK MCU開發板電路圖(4)

圖8.Cerebot MX7cK MCU開發板電路圖(5)

圖9.Cerebot MX7cK MCU開發板電路圖(6)

圖10.Cerebot MX7cK MCU開發板電路圖(7)

圖11.Cerebot MX7cK MCU開發板電路圖(8)
詳情請見:
61156G[1].pdf (5.22 MB)
Cerebot_MX7cK_rm[1].pdf (1.68 MB) 以及
Cerebot MX7cK_sch[1].pdf (334.17 KB)
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