ST STM32L072xx超低功耗32位ARM MCU开发方案

ST公司的STM32L072xx是系于ARM Cortex®-M0+核的超低功耗32位MCU,集成了高达192KB闪存,20KB SRAM,6KB EEPROM以及USB,ADC和DAC等模拟特性.工作电压1.65-3.6V,工作温度-40 到125℃,待机模式电流0.29 μA ,主要用在气表/水表和工业传感器,健康和健美设备,遥控和用户接口,PC外游戏和GPS设备以及告警系统,有线和无线传感器与视频连接.本文介绍了STM32L072xx系列主要特性,框图和时钟树,以及包括P-NUCLEO-LRWAN1(NUCLEO-L073RZ板和I-NUCLEO-SX1272D RF扩展板的Nucleo包主要特性,系统框图和I-NUCLEO-SX1272D RF扩展板电路图.
STM32L072x8 STM32L072xB STM32L072xZUltra-low-power 32-bit MCU ARM®-based Cortex®-M0+, up to 192KB Flash, 20KB SRAM, 6KB EEPROM, USB, ADC, DACs The ultra-low-power STM32L072xx are offered in 9 different package typesfrom 32 pins to 100 pins. Depending on the device chosen, different sets of peripherals are included, the description below gives an overview of the complete range of peripherals proposed in this family. These features make the ultra-low-power STM32L072xx microcontrollers suitable for a wide range of applications: 
Gas/water meters and industrial sensors 
Healthcare and fitness equipment 
Remote control and user interface 
PC peripherals, gaming, GPS equipment 
Alarm system, wired and wireless sensors, video intercom
The ultra-low-power STM32L072xx microcontrollers incorporate the connectivity power of the universal serial bus (USB 2.0 crystal-less) with the high-performance ARM® Cortex®- M0+ 32-bit RISC core operating at a 32 MHz frequency, a memory protection unit (MPU), high-speed embedded memories (up to 192 Kbytes of Flash program memory, 6 Kbytes of data EEPROM and 20 Kbytes of RAM) plus an extensive range of enhanced I/Os and peripherals. The STM32L072xx devices provide high power efficiency for a wide range of performance. It is achieved with a large choice of internal and external clock sources, an internal voltage adaptation and several low-power modes.
The STM32L072xx devices offer several...