ST STM32L4S5VIT6超低功耗120MHz MCU开发方案

ST公司的STM32L4S5xx, STM32L4S7xx和STM32L4S9xx系列是超低功耗MCU,基于高性能Arm® Cortex®-M4 32位RISC核,工作频率高达120MHz. Cortex-M4核具有单精度浮点单元(FPU),支持所有的Arm®单精度数据处理指令和所有的数据类型,还能实现全套DSP指令和存储器保护单元(MPU),从而增强了应用的安全性.这些器件嵌入高速存储器(2MB闪存和640KB SRAM,用于静态存储器的灵活存储器控制器(FSMC),两个OctoSPI闪存接口和广泛的增强I/O和外设,连接两条APB总线,两条AHB总线和32位多AHB总线矩阵.器件还提供快速12位ADC(5Mbps),两个比较器,两个运算放大器,两个DAC通路,内部电压基准缓冲器,低功耗RTC,两个通用16位计时器,专用于马达控制的16位PWM计时器,七个通用16位计时器和两个16位低功耗计时器.支持四个数字滤波器,用于Sigma-Delta调制器(DFSDM).此外还可提供多达24个电容性检测通路.主要用在财产跟踪,计量和车队管理服务.本文介绍了STM32L4S5VIT6主要特性, STM32L4S5xx, STM32L4S7xx和STM32L4S9xx框图, 时钟树图以及开发板B-L4S5I-IOT01A主要特性,硬件框图和电路图.

The STM32L4S5xx, STM32L4S7xx and STM32L4S9xx devices are an ultra-low-power microcontrollers family (STM32L4+ Series) based on the high-performance Arm® Cortex®-M4 32-bit RISC core. They operate at a frequency of up to 120 MHz.

The Cortex-M4 core features a single-precision floating-point unit (FPU), which supports all the Arm® single-precision data-processing instructions and all the data types. The Cortex-M4 core also implements a full set of DSP (digital signal processing) instructions and a memory protection unit (MPU) which enhances the applications security.

These devices embed high-speed memories (2 Mbytes of Flash memory and 640 Kbytes of SRAM), a flexible external memory controller (FSMC) for static memories (for devices with packages of 100 pins and more), two OctoSPI Flash memories interface (available on all packages) and an extensive range of enhanced I/Os and peripherals connected to two APB buses, two AHB buses and a 32-bit multi-AHB bus matrix....