nRF52833 TAExt Extended Operating Temperature

RE: nRF52833 TAExt Extended Operating Temperature

runsiv — Wed, 19 Jun 2024 11:14:19 GMT

The UART baudrate accuracy is dependent on HFCLK. I don't think LFXO is related. We do not see the risk of enabling LFXODEBOUNCE earlier when it hasn't reached the EOC condition. It is actually not allowed to change reg value LFXODEBOUNCE when LFXO is starting.

I would just like to emphasize that for UART it is essential that the HXFO is on, I would presume this is even more important in regards to temperature .

Regards

Runar

RE: nRF52833 TAExt Extended Operating Temperature

LongQi — Wed, 19 Jun 2024 06:57:46 GMT

any progress?

RE: nRF52833 TAExt Extended Operating Temperature

runsiv — Tue, 11 Jun 2024 12:21:30 GMT

Hi,

Thank you for your patience, I'm waiting to hear back from the developers regarding question 2

Regards

Runar

RE: nRF52833 TAExt Extended Operating Temperature

LongQi — Mon, 10 Jun 2024 09:42:35 GMT

Based on the list, May I say the UART and RF will not be affected? we need the UART to working on 921600.

RE: nRF52833 TAExt Extended Operating Temperature

LongQi — Mon, 10 Jun 2024 09:17:13 GMT

yes, because I notice the temperature is not so stable so if I may need to turn on LFXODEBOUNCE before it reaches the boundary.

RE: nRF52833 TAExt Extended Operating Temperature

runsiv — Thu, 06 Jun 2024 12:33:15 GMT

Quick question. When you mean below Extended Operating Temperature, do you mean within then normal operating temperature range?

Regards

Runar

RE: nRF52833 TAExt Extended Operating Temperature

runsiv — Thu, 06 Jun 2024 11:32:05 GMT

From what I can see the following is affected:

VREG0OUT,ERR,EXT
tSTART_LFXO_EXT
fTOL_HFINT,EXT
INFC_LEAK_EXT
TTEMP,ACC,EXT

Regarding question two I'm asking internally and will get back to you

Regards

Runar