MAX3232 RS232 to TTL Serial Port Converter Module DB9 Connector

AED 12.50



The Serial Converter Module is a solution for bridging the voltage gap between your PC's RS232 and the TTL voltage necessary for seamless microcontroller communication. Simply connect the DB9 connector to your PC and open the door to direct communication with your microcontrollers through the Serial port. Compatible with a wide array of microcontroller units (MCUs), including Arduino, AVR, and ARM, this module adds flexibility to your projects. It's worth noting that some Arduinos already come equipped with a UART2 to USB connection. However, if your project demands multiple serial connections to your PC, this module becomes an indispensable tool in your kit.


Package Includes:

  • 1 x Serial Converter Module



  • Communications chip: MAX3232.
  • Operating voltage: 3.3V-5.5V.
  • Interface: UART.


Pinout of the Module:

  • VCC: 5V
  • TX: Transmitting data
  • RX: Receiving data
  • GND: Ground


How Two Devices Communicate through UART:

UART BUS between two devices

Two UARTs are required for direct communication. The transmitting UART converts parallel data from a CPU into serial format and transmits it to the second UART, which receives the data and converts it back into parallel data, making it accessible to the receiving device.

Instead of clock signals, start and stop bit signals define the beginning and end of data packages. The receiving UART detects the start bit and begins reading the bits. The baud rate, measured in bits per second (bps), determines the speed of data transfer. To ensure successful data transfer, both transmitting and receiving UARTs should operate at nearly the same baud rate. If the baud rates differ, they should only deviate by up to 10%. Configuration of the receiving and transmitting UARTs to handle the same data packages is crucial.