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Tool/software:
Hi,
I'm using Isow1412 isolated rs485 chip in my product.I'm facing an issue currently.I'm trying to communicate with plc(Master) & my product (slave). PLC sending data which is collected & send to microcontroller through Isow1412's RO line. Both Isow1412 & microcontroller are in 3.3V logic.In that communication which is in 3.3V i'm getting a 700mV to 900mV noise frequently. On connecting plc & my product microcontroller is getting slower which is exposed on other functionalities.
Suggest a solution to control the noise( glitches) in RO line.
Such noise usually comes from the power supply. Please check with the oscilloscope.
Please show the schematic, and the board layout.