STMicroelectronics STM32F439IIH7 ARM微控制器 - MCU高性能高级系列，Arm Cortex-M4内核DSP和FPU，2兆字节闪存

I/O Voltage: 3.3 V

Unit Weight: 5.147 g

ADC Resolution: 12 bit

DAC Resolution: 12 bit

Moisture Sensitive: Yes

Supply Voltage - Max: 3.6 V

Supply Voltage - Min: 1.7 V

Analog Supply Voltage: 3.3 V