[原创] ST STM32L072CZ超低功耗32位ARM MCU开发方案

ST公司的STM32L072xx系列产品是超低功耗32位基于ARM®-based Cortex®-M0+的MCU,集成了多达192KB闪存,20KB SRAM,6KB EEPROM以及USB,ADC和DAC等.工作频率从表32 kHz到高达32 MHz(最大),0.95 DMIPS/MHz.工作电压1.65V-3.6V,工作温度-40到 125℃,待机模式功耗0.29 μA,停止模式为0.43 μA,运行模式可低至93 μA/MHz,从闪存的叫醒时间为5 μs,12为ADC转换在10ksps时功耗41 μA,多达84个快速I/O.器件嵌入标致和先进的通信接口包括多达3个I2C,两个SPI,一个I2S,四个USART,一个低功耗UART(LPUART)和一个无晶振的USB.器件提供多达24个容性检测通路,以简化应用时增加触摸检测功能.STM32L072xx还包括实时时钟和一组备份寄存器.主要用在气体/水表和工业传感器,遥控和用户接口,健康和健美设备,PC外设,游戏和GPS设备,告警系统,有线和无线传感器和视频互连.本文介绍了STM32L072xx系列主要特性和框图,时钟树框图和电源方案图,以及B-L072Z-LRWAN1 Discovery套件主要特性,硬件框图,电路图,材料清单和PCB设计图.

The ultra-low-power STM32L072xx are offered in 10 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 ..

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