RS232 SP3232 TTL to RS232 Module RS232 to TTL Brush Line Serial Port Module 1 EXAR Chip (Single channel)

The main purpose:

1. MCU ARM and other MCU communicate with the computer through the serial port (COM port) of the computer
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3. Serial port expansion of the device

Instructions for use: (In the case of accessing the MCU how to connect the pins of each row)

VCC: Connect DC 3V-5.5V
GND: Connect to GND
TXD: Connect to MCU.RX (Signal Flow Direction: MCU.RX
RXD: Connect to MCU.TX (Signal Flow: MCU.TX >> SP3232 >> PC.RX)