Inconsitent data about the number of UARTs in the nRF5340

[Bogdan Marinescu]

Hi, there in inconsistent data about the number of UARTs in the nRF5340 OPS v0.5.1:

- Page ii (nRF5340 features) states "Up to 2x UART (CTS/RTS) with EasyDMA" for the application core
- Page 97, section 5.1.3.1.1 (instantiation of peripherals for the application core) lists 4 UARTs with IDs 8, 9, 11 and 12.
- Page 658, section 7.1.39.3 (Registers) also lists 4 UART instances for the application core.

So what is the actual maximum number of UARTs supported by the application core? Thank you.

[Sigurd]

Hi,

So what is the actual maximum number of UARTs supported by the application core? Thank you.

 Thank you for reporting this. The correct number is 4. But, on the nRF5340 Engineering A only 2 of them are functional, see this errata. This will be fixed in a upcoming IC revision of the nRF5340.

[Bogdan Marinescu]

Thanks for the quick reply and for the good news (I really wanted the answer to be 4 :) )

[Uncle_Jack]

Hi, I got a nRF5340 PDK. Does this applies to PDK or it is for other particular board? Looking at info center there is separate tab for PDK. can I use 4 UART on PDK or not ?

[Reto]

We are about to build a prototype for a 2022 product, which will need 4x UART.

Is there an ETA for this fixed revision?