I'm using lpc1768 controller with MAX487 chip for rs485 communication. I can receive a data from outside(terminal) properly via RS485. But sending has a problem. While sending it sends a junk data. If i provide a 100 Milli second delay for each byte send it works properly. My controller RTS pin drops some 800mV when connecting to MAX487 chip. I checked that MAX487 chip with PIC16f1937 controller that works fine. I don't know a reason for it didn't work with ARM controller.
I need to know LPC1768 can support to MAX487 or not? Please help me to solve my problem.
Thanks & Regards,