Microchip PIC32MX 32位MCU多媒体扩展板解决方案
Microchip公司的多媒体扩展板(MEB)采用PIC32系列32位MCU,为PIC32入门板用户,dsPIC33E或PIC24E USB入门板用户提供了灵活解决方案,以开发更高级用户接口.MEB集成了3.2 Color TFT触摸屏QVGA显示器,FCC认证WiFi模块,24位立体声音频代码,三轴加速度计,操纵杆和MicroSD存储器卡插槽,简便和DM320001, DM320003-2, DM320004, DM330012 以及DM240012入门板连接,可用于图像/用户接口,以太网/USB/CAN连接,多任务嵌入式控制以及高性能音频.本文介绍了PIC32MX主要特性,方框图,多媒体扩展板(MEB)主要特性,方框图,电路图,材料清单和PCB元件布局图.
PIC32MX1XX/2XX:32-bit Microcontrollers (up to 128 KB Flash and 32 KB SRAM) with Audio and Graphics Interfaces, USB, and Advanced Analog
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!
PIC32MX主要特性:
Operating Conditions
• 2.3V to 3.6V, -40ºC to +105ºC, DC to 40 MHz
Core: 40 MHz MIPS32® M4K®
• MIPS16e® mode for up to 40% smaller code size
• 1.56 DMIPS/MHz (Dhrystone 2.1) performance
• Code-efficient (C and Assembly) architecture
• Single-cycle (MAC) 32x16 and two-cycle 32x32 multiply
Clock Management
• 0.9% internal oscillator
• Programmable PLLs and oscillator clock sources
• Fail-Safe Clock Monitor (FSCM)
• Independent Watchdog Timer
• Fast wake-up and start-up
Power Management
• Low-power management modes (Sleep, Idle)
• Integrated Power-on Reset and Brown-out Reset
• 0.5 mA/MHz dynamic current (typical)
• 20 μA IPD current (typical)
Audio Interface Features
• Data communication: I2S, LJ, RJ, DSP modes
• Control interface: SPI and I2C™
• Master clock:
- Generation of fractional clock frequencies
- Can be synchronized with USB clock
- Can be tuned in run-time
Advanced Analog Features
• ADC Module:
- 10-bit 1.1 Msps rate with one SH
- Up to 10 analog inputs on 28-pin devices and 13 analog inputs on 44-pin devices
• Flexible and independent ADC trigger sources
• Charge Time Measurement Unit (CTMU):
- Supports mTouch™ capacitive touch sensing
- Provides high-resolution time measurement (1 ns)
- On-chip temperature measurement capability
• Comparators:
- Up to three Analog Comparator modules
- Programmable references with 32 voltage points
Timers/Output Compare/Input Capture
• Five General Purpose Timers:
- Five 16-bit and up to two 32-bit Timers/Counters
• Five Output Compare (OC) modules
• Five Input Capture (IC) modules
• Peripheral Pin Select (PPS) to allow function remap
• Real-Time Clock and Calendar (RTCC) module
Communication Interfaces
• USB 2.0-compliant Full-speed OTG controller
• Two UART modules (10 Mbps)
- Supports LIN 2.0 protocols and IrDA® support
• Two 4-wire SPI modules (20 Mbps)
• Two I2C modules (up to 1 Mbaud) with SMBus support
• Peripheral Pin Select (PPS) to allow function remap
• Parallel Master Port (PMP)
Direct Memory Access (DMA)
• Four channels of hardware DMA with automatic data size detection
• Two additional channels dedicated for USB
• Programmable Cyclic Redundancy Check (CRC)
Input/Output
• 15 mA source/sink on all I/O pins
• 5V-tolerant pins
• Selectable open drain, pull-ups, and pull-downs
• External interrupts on all I/O pins
Qualification and Class B Support
• AEC-Q100 REVG (Grade 2 -40ºC to +105ºC) planned
• Class B Safety Library, IEC 60730
Debugger Development Support
• In-circuit and in-application programming
• 4-wire MIPS® Enhanced JTAG interface
• Unlimited program and six complex data breakpoints
• IEEE 1149.2-compatible (JTAG) boundary scan
PIC32MX应用:
High Impact Graphics/User Interfaces
Ethernet/USB/CAN/Connectivity
Multitasking Embedded Control
High Performance Audio
![](http://uphotos.eepw.com.cn/fetch/20130729/148318_1_0.jpg)
图1.PIC32MX方框图
多媒体扩展板(MEB)
This compact, highly versatile board can be connected to any PIC32 starter kit for the purpose of developing multimedia applications, such as audio, graphics and touch screen.
![](https://webstorage.eepw.com.cn/images/2014/m/wx.png)
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