目录
3.20 USART....................................................................................................................................................17
3.21 LPUART..................................................................................................................................................18
3.22 SPI/I2S ...................................................................................................................................................18
3.23 GPIO ......................................................................................................................................................18
3.24 DMA ......................................................................................................................................................19
3.25 ADC........................................................................................................................................................19
3.26 CAN........................................................................................................................................................19
3.27 RTC 时钟 ...............................................................................................................................................19
3.28 电机加速单元......................................................................................................................................20
3.29 DVSQ 计算单元 ....................................................................................................................................20
3.30 可编程逻辑单元（CLU） ...................................................................................................................20
3.31 电压比较器..........................................................................................................................................21
3.32 内部参考电压......................................................................................................................................21
3.33 温度传感器..........................................................................................................................................21
3.34 96 位 UID...............................................................................................................................................21
3.35 调试接口..............................................................................................................................................21
4 电气性能指标...................................................................................................................................................22
4.1 最大绝对额定值....................................................................................................................................22
4.1.1 极限电压特性.............................................................................................................................22
4.1.2 极限电流特性.............................................................................................................................22
4.1.3 极限温度特性.............................................................................................................................22
4.2 工作参数................................................................................................................................................23
4.2.1 推荐工作条件.............................................................................................................................23
4.2.2 低压检测.....................................................................................................................................23
4.2.3 上/下电复位特性.......................................................................................................................23
4.2.4 内部参考电压.............................................................................................................................24
4.2.5 工作电流特性.............................................................................................................................24
4.2.6 外部快速（HSE）时钟特性 ......................................................................................................25
4.2.7 外部低速（LSE）时钟特性 .......................................................................................................26
4.2.8 内部快速（HSI）时钟特性 .......................................................................................................27
4.2.9 内部低速（LSI）时钟特性 ........................................................................................................27
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