PSoC1, RS485 transceiver High Z Ro output (when enable is high, see table), does have anyone a solution without external pullup ?

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cross mob
3 Replies
SampathS_11
Moderator
Moderator
Moderator
250 sign-ins 250 solutions authored 5 questions asked

Hello @LuSa_1231216 ,

If you have an unused GPIO, you can connect RO pin to that GPIO also, and configure it as a pull-up.

Best regards,

Sampath

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BiBi_1928986
Level 7
Level 7
First comment on blog 500 replies posted 250 replies posted

Hello.

Your schematic shows the solution.
You've connected RE to DE.  Therefore, RE=1, DE=0, can not happen.  Therefore never go High-Z.

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