STM32L4R5和STM32L4S5器件，最高频率可达120 MHz，凭借带有DSP和浮点单元（FPU）的Arm® Cortex®-M4内核扩展了超低功耗产品系列及其性能。
- STM32L4R5系列提供从1到2 MB Flash存储器，提供100~169引脚封装。
- STM32L4S5具有2 MB Flash存储器，还提供了额外的硬件加密加速引擎（AES、HASH）。
STM32L4R5/S5
STM32L4R5和STM32L4S5器件，最高频率可达120 MHz，凭借带有DSP和浮点单元（FPU）的Arm® Cortex®-M4内核扩展了超低功耗产品系列及其性能。
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