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【PIC32 starter kit】芯片介绍

2016-10-2 11:30:40 2917

0 接上一篇帖子【PIC32 starter kit】hARMony框架搭建 - PIC单片机论坛 - 中国电子技术论坛 - 最好最受欢迎电子论坛! https://bbs.elecfans.com/jishu_942727_1_1.html PIC32主要包括两大系列，PIC32MX和PIC32MZ，MX比如PIC32MX795F512L，PIC32MX7xx采用MIPS32® M4K内核，工作电压2.3V-3.6V，最高主频80MHz。本次PIC32 starter kit的主控芯片是PIC32MZ2048ECH144，512K SDRAM，2M的flash，支持LIN总线，支持IRDA协议，MIPS M4K 32 位内核。什么你没听过？仅次于ARM架构吧，我目前知道的除了以上两种，还有freescale的power PC 架构，PIC32 单片机在引脚上与该USB控制芯片16 位单片机 PIC24FJ256GA 系列兼容。，MIPS也是属于RISC指令集。注意flash上M以上的芯片不多见，arduino UNO flash才32K，RAM 2K；STM32L011才16Kflash ，2K RAM，由此可见，PIC芯片可见一斑 datasheet见PIC32MZ2048ECH144 - 32-bit PIC Microcontrollers http://www.microchip.com/wwwproducts/cn/PIC32MZ2048ECH144，但是看到如下提醒，不建议使用该款芯片 Not Recommended for new designs Please consider PIC32MZ2048EFH144 for new designs 好像对EC系列都不建议使用，看了下ECM的，也是建议使用EF系列 PIC32MZ2048ECM144Not Recommended for new designs Please consider PIC32MZ2048EFM144 for new designs 特性如下： 200 MHz/330 DMIPS, microAptiv core DSP-enhanced core: Four 64-bit accumulators Single-cycle MAC, saturating and fractional math Dual Panel Flash for live update support 10-bit, 500 KSPS, 48-channel ADC module Memory Management Unit for optimum embedded OS execution microMIPS mode for up to 35% code compression CAN, UART, I2C, PMP, EBI, SQI & Analog Comparators SPI/I2S interfaces for audio processing and playback Hi-Speed USB 2.0 Device/Host/OTG 10/100 Mbps Ethernet MAC with MII and RMII interface Temperature Range: - 40°C to 85°C; - 40°C to 125°C (planned) Microcontroller Features Operating voltage range of 2.2V to 3.6V 2MB Flash memory (plus an additional 160 KB of Boot Flash) 512KB SRAM memory microMIPS mode for up to 35% smaller code size DSP-enhanced core: Four 64-bit accumulators Single-cylce MAC, saturating and fractional math Code-efficient (C and Assembly) architecture Low-power management modes (Idle and Sleep) Peripheral Features 50 MHz External Bus Interface (EBI) 50 MHz Serial Quad Interface (SQI) Peripheral Pin Select (PPS) functionality to enable function remap 8 channels of hardware programmable DMA and 16 channels of dedicated DMA with automatic data size detection Six UART modules (25 Mbps): Supports LIN 1.2 and IrDA protocols Two CAN modules 2.0B Active with DeviceNet addressing support Six 4-wire SPI modules (50 Mbps) SQI configurable as an additional SPI module (50 MHz) Five I2C modules (up to 1 Mbaud) with SMBus support Parallel Master Port (PMP) Hardware Real-Time Clock and Calendar (RTCC) Nine 16-bit Timers/Counters (four 16-bit pairs combine to create four 32-bit timers) Nine Capture inputs and Nine Compare/PWM outputs Audio/Graphics/Touch HMI Features Graphics interface: EBI or PMP Audio data communication: I2S, LJ, RJ, USB Audio data control interface: SPI and I2C™ Audio data master clock: Fractional clock frequencies with USB synchronization Advanced Analog Features 10-bit ADC Module: 500 Ksps rate with one Sample and Hold (S&H) circuits Up to 48 analog inputs Flexible and independent ADC trigger sources 6 digital filters and comparators Two analog comparators with 32 programmable voltage references Temperature sensor with ±2°C accuracy Debugger Development Support In-circuit and in-application programming 4-wire MIPS® Enhanced JTAG interface Unlimited program and 12 complex data breakpoints IEEE 1149.2-compatible (JTAG) boundary scan Non-intrusive hardware-based instruction trace USB控制芯片 PIC24FJ256GA特性：低功耗，待机模式下运行电流<0.1ma,3xI2C, 3xSPI，4xUARTS,23个独立定时器，RAM 16K，适于嵌入式监控应用，支持USB设备模式、主机模式、OTG模式，datasheet如下描述PPS和CTMU， PPS (peripheral pin select) aids in configuring the most efficient pin configuration of available I/O, and CTMU provides touch support for up to 64 individual buttons. CPU Up to 16 MIPS performance 16 x 16 Hardware Multiply, Single Cycle Execution 12-bit x 16-bit Hardware Divider C Compiler Optimized Instruction Set nanoWatt Power Managed Modes Run, Idle and Sleep modes Multiple, Switchable Clock Modes for Optimum Performance and Power Management Run mode: 1 mA/MIPS, 2.0V Typical Sleep mode Current Down to 100 nA Typical Standby Current with 32 kHz Oscillator:2.5 uA,2.0V typical Flash Program Memory Self-Reprogrammable under Software Control 10,000 erase/write cycles 20 year data retention EEprom emulation capable System Internal oscillator support - 31 kHz to 8 MHz, up to 32 MHz with 4X PLL On-chip LDO Voltage Regulator JTAG Boundary Scan and Flash Memory Program Support Fail-Safe Clock Monitor – allows safe shutdown if clock fails Watchdog Timer with separate RC oscillator Analog Features 10-bit ADC, 16 channels, 500k samples per second Three Analog comparators Universal Serial Bus Features USB v2.0 On-the-Go compliant Dual role capable, can act as either Host or Device Low speed(1.5Mb/s) and full speed(12 Mb/s) operation in host mode Full speed USB operaton in Device mode Supports 32 endpoints On-chip USB transceiver Peripherals CTMU supports Capacitive Touch applications Perpheral Pin Select allows I/O remapping of many peripherals in real time 4xUART Modules with LIN and IrDA support, 4 Deep FIFO 3xSPI ™ Modules with 8 Deep FIFO 3xI2C™ Modules with Master and Slave Modes Five 16-bit Timer Modules Up to 9 Input Capture and 5 Output Compare/PWM with dedicated time base Hardware RTCC, Real-Time Clock Calendar with Alarms PMP, Parallel Master Port, with 16 Address Lines, and 8/16-bit Data 今天发现我的芯片是ECM144，和ECH144比较主要是带了加密功能 Crypto Engine with a RNG for data encryption/decryption and authentication (AES, 3DES, SHA, MD5, and HMAC) 0
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