EnergyMicro EFM32G232低功耗32位MCU开发方案

1、energymicro efm32g232低功耗32位mcu开发方案低功耗微控制器(energy micro)公司的32位处理器efm32 gecko系列产品采纳 -m3内核,工作频率高达32mhz.系列产品具有低特性，协作2 s的唤醒时光，使其起码增强了4倍的电池用法寿命。启动模式下从闪存flash执行代码所消耗的典型电流为160 a/mhz、深度睡眠模式和关断模式下分离为900na和20na。主要用在不断进展的智能仪表市场和对功耗敏感的应用，如楼宇、安防系统和便携式健康医疗及健身设备。本文介绍了efm32 gecko系列主要特性,方框图和efm32-g2xx-dk开发板主要特性与具体的.t

2、he efm32 s are the worlds most energy friendly microcontrollers. with a unique combination of the powerful 32-bit arm cortex-m3, innovative low energy techniques, short wake-up time from energy saving modes, and a wide selection of peripherals, the efm32g microcontroller is well suited for any batte

3、ry operated application as well as other systems requiring high performance and low-energy consumption.this section gives a short introduction to each of the modules in general terms and also and shows a summary of the configuration for the efm32g232 devices.the arm cortex-m3 includes a 32-bit risc

4、processor which can achieve as much as 1.25 dhrystone /mhz. a memory protection unit with support for up to 8 memory segments is included, as well as a wake-up interrupt controller handling interrupts triggered while the cpu is asleep.efm32 gecko系列主要特性:arm cortex-m3 cpu platformhigh performance 32-b

5、it processor up to 32 mhzmemory protection unitwake-up interrupt controllerflexible energy management system20 na 3 v shutoff mode0.6 a 3 v stop mode, including power-on reset, brown-out detector, ram and cpu retention0.9 a 3 v deep sleep mode, including rtc with 32.768 khz oscillator, power-on rese

6、t, brown-out detector, ram and cpu retention45 a/mhz 3 v sleep mode180 a/mhz 3 v run mode, with code executed from flash128/64/32 kb flash16/16/8 kb ram53 general purpose i/o pinsconfigurable push-pull, open-drain, pull-up/down, input filter, drive strengthconfigurable peripheral i/o locations16 asy

7、nchronous external interrupts8 channel dma controller8 channel peripheral reflex system for autonomous inter-peripheral signalinghardware aes with 128/256-bit keys in 54/75 cyclestimers/counters3× 16-bit timer/counter3×3 compare/capture/ channelsdead-time insertion on timer016-bit low ener

8、gy timer24-bit real-time counter3× 8-bit pulse counterwatchdog timer with dedicated rc oscillator 50 nacommunication interfaces3× universal synchronous/asynchronous receiver/transmitteruart/spi/smartcard (iso 7816)/irdatriple buffered full/half-duplex operation2× low energy uartautono

9、mous operation with dma in deep sleep modei2c interface with smbus supportaddress recognition in stop modeultra low power precision analog peripherals12-bit 1 msamples/s analog to digital converter8 single ended channels/2 differential channelson-chip temperature sensorconversion tailgating for predictable latency12-bit 500 ksamples/s digital to analog converter2× analog comparatorcapacitive sensing with up to 16 inputssupply voltage comparatorultra efficient powe