Microchip PIC18F87K22极低功耗8位MCU开发方案

1、microchip pic18f87k22极低功耗8位mcu开发方案公司的18f87k22系列是采纳极低功耗(nanowatt xlp)技术的高性能,集成了1mb增加性闪存和24路12位,具有高达16性能,8x8单周期硬件乘法器,工作频率高达64mhz,工作1.8v-5.5v,有10个ccp/eccp模块,11个8/16位定时器/计数器模块,两个主同步串口模块,特殊适用于功率有严格要求和以电池为能源的应用.本文介绍了pic18f87k22低功耗特性,mcu特性以及外设特性, 方框图以及xlp 8位开发板主要特性,主要元件及分布图以及.pic18f87k22 family 64/80-pin,

2、high-performance, 1-mbit enhanced flash microcontrollers with 12-bit a/d and nanowatt xlp technologythis document contains device-specific information for the following devices:this family combines the traditional advantages of all pic18 microcontrollers namely, high computational performance and a

3、rich feature set with an extremely competitive price point. these features make the pic18f87k22 family a logical choice for many high-performance applications where price is a primary consideration.pic18f87k22低功耗特性:power-managed modes:- run: cpu on, peripherals on- idle: cpu off, peripherals on- sle

4、ep: cpu off, peripherals offtwo-speed oscillator start-upfail-safe clock monitorpower-saving peripheral module disable (pmd)ultra low-power wake-upfast wake-up, 1 us typicallow-power wdt, 300 na typicalultra low 50 na input leakagerun mode currents down to 5.5 ua, typicalidle mode currents down to 1

5、.7 ua typicalsleep mode currents down to very low 20 na, typicalrtcc current downs to very low 700 na, typicalpic18f87k22 mcu特性:operating voltage range: 1.8v to 5.5von-chip 3.3v regulatoroperating speed up to 64 mhzup to 128 kbytes on-chip flash program memorydata eeprom of 1,024 bytes4k x 8 general

6、 purpose registers (sram)10,000 erase/write cycle flash program memory, minimum1,000,000 erase/write cycle data eeprom memory, typicalflash retention: 40 years, minimumthree internal oscillators: lf-intrc (31 khz), mf-intosc (500 khz) and hf-intosc(16 mhz)self-programmable under software controlprio

7、rity levels for interrupts8 x 8 single-cycle hardware multiplierextended watchdog timer (wdt):- programmable period from 4 ms to 4,194s (about 70 minutes)in-circuit serial programming (icsp ) via two pinsin-circuit debug via two pinsprogrammable:- bor- lvdpic18f87k22外设亮点:up to ten ccp/eccp modules:-

8、 up to seven capture/compare/ (ccp) modules- three enhanced capture/compare/pwm (eccp) modulesup to eleven 8/16-bit timer/counter modules:- timer0 8/16-bit timer/counter with 8-bit programmable prescaler- timer1,3 16-bit timer/counter- timer2,4,6,8 8-bit timer/counter- timer5,7 16-bit timer/counter

9、for 64k and 128k parts- timer10,12 8-bit timer/counter for 64k and 128k partsthree analog comparatorsconfigurable reference clock outputhardware real-time clock and calendar (rtcc) module with clock, calendar and alarm functionscharge time measurement unit (ctmu):- capacitance measurement for mtouch

10、 sensing solution- time measurement with 1 ns typical resolution- integrated temperature sensorhigh-current sink/source 25 ma/25 ma (portb and portc)up to four external interruptstwo master synchronous serial port (mssp) modules:- 3/4-wire spi (supports all four spi modes)- i2c master and slave modestwo enhanced addressable usart modules:- lin/j2602 support- auto-baud detect (a