|
LDmicro Forum - Communication between 2 microcontroller |
|||
|
|
|
(you are viewing a thread; or go back to list of threads)
Communication between 2 microcontroller (by Sam)
I have some doubts here want to ask, May i know there is a need to use max232 circuit for communication between 2 microcontroller?
As i know, RS232 logic is just use in PC. So, if both microcontrollers also using TTL logic, why we still need to use max232 for rs232 conversion? i am little bit confusing about this.
(no subject) (by Jonathan Westhues)
You don't. If you connect the async serial ports of two microcontrollers directly (RX to TX, TX to RX), then it will work. The RS-232 driver has a bigger voltage swing, though, and therefore may be more robust to electrical noise when long cables are in use.
(no subject) (by Sam)
Thank you Jonathan
Post a reply to this comment:
|
|
|