This module can be used to convert the RS232 voltage of PC to TTL voltage used by the microcontroller. Directly plug the DB9 connector into your PC then you can communicate with the microcontrollers using the Serial port. It applies to a variety of platforms including Arduino / AVR / ARM. For Arduino, please also note that there is already a UART2USB connection, you just need this module if you want more serial connection to your computer.
It is widely used in radio modification, phone flash, XBOX360 flash, GPS, vehicle detection, DVD flash.
features of RS232 to TTL MAX3232 :
Working voltage: 3-5 V
Chip MAX3232
Pin definition: GND, RXD, TXD, VCC, +5 V
Pitch: 2.54 MM
Size : 30mmx20mm
hard disk repair set-top box upgrade, It can be used to program STC MCU, NXP MCU, Renesas MCU, STM32 MCU, N+-2EC MCU