Do I need external pull up resistors for TX and RX lines in CP2102N?

Question

I want to use it to program a microcontroller and this is the recommended set up from the data sheet. I was wonder If I need these resistors or not. Recommended UART programming set up

I am not asking if STM32 chips require pull ups. I know they are required I am asking whether they are built in Silicon Labs CP2102N or not.

Possible duplicate of [Pull up resistors on UART](https://electronics.stackexchange.com/questions/270834/pull-up-resistors-on-uart) — Oldfart, Oct 06 '19 at 13:05
@jsotola Would you elaborate. I read the datasheet and I could not find the answer. May be there is something that is understood by default and I did not understand it. — kadhem alabdulmuhsin, Oct 06 '19 at 17:33

score 1 · Accepted Answer · answered Oct 09 '19 at 03:13

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I asked the same question in Silicon Labs community website and they answered politely that CP2102N does have built-in pull up resistors. I tested this yesterday and I managed to program my microcontroller.

answered Oct 09 '19 at 03:13

kadhem alabdulmuhsin

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Do I need external pull up resistors for TX and RX lines in CP2102N?

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