Interface a uC to PC RS232 with MAX232A


Posted on Feb 4, 2014

This is the standard configuration on how to Interface a uC like 8051 to PC RS232 with MAX232A. The UART or Serial port was not present in 8049/8749 chips which were the ancestors of 8051/8031. Pages of code were needed to make a software UART in MCS-48. The 8051 integrated the hardware UART and short commands made it tick. The most important inno


Interface a uC to PC RS232 with MAX232A
Click here to download the full size of the above Circuit.

vation which made uC popular was the C in 80C31. C is for CMOS. This made the chip work cooler and work on even batteries and small power supplies. The 8749 and 8751 are the UV EPROM type of uC. With limited erase/write cycles. The FLASH revolution changed every thing, you could update firmware over a phone line modem. Even without Ethernet, the firmware could be updated by making every embedded device a node on the EPABX. Now TCP/IP and Wi-Fi makes it all very easy.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    15 x 7 LED display with PIC16F628
    Keypad Talking To LCD Via AT89S51
    Audio level meter using LM3915
    Voltage to Current Convertor using LM723 Project PCB
    BH1417 Stereo FM Transmitter
    Simple Siren Circuit



    Top