ST STM32L4R9I高性能超低功耗ARM MCU开发方案

ST公司的STM32L4R9I是高性能超低功耗MCU系列产品,基于Arm® Cortex®-M4 32位RISC核,工作频率高达120MHz,支持所有ARM单精度数据处理指令和所有数据类型,并能实现全套的DSP指令和存储器保护单元(MPU),使得应用更加安全.电源电压1.7V-3.6V,关断模式33 nA,工作温度-40℃ 到 85/125℃,主要用在健康手环,智能手表,小型医疗设备,智能表计和智能工业传感器等各种产品的中央控制器.本文介绍了STM32L4R9I主要特性,框图和时钟树,以及评估板STM32L4R9I-EVAL主要特性,框图,电路图,材料清单和PCB主要元件分布图.
The STM32L4R5xx, STM32L4R7xx and STM32L4R9xx 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 application’s 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.
The STM32L4Rxxx devices embed several protection mechanisms for embedded Flash memory and SRAM: readout protection, write protection, proprietary code readout protection and a firewall.
These devices offer a fast 12-bit ADC (5 Msps), two comparators, two operational amplifiers, two DAC channels, an internal voltage reference buffer, a low-power RTC, two general-purpose 32-bit timer, two 16-bit PWM timers dedicated to motor control, seven general-purpose 16-bit timers, and two 16-bit low-power timers. The devices suppor...