NRF52840 SPIM3 Causing Power consumption of 450uA even after a data transfer is complete and is unintialized.

[Aswin Mathew]

Hello,

We have a bit of a problem out here while using SPIM3 for Data transfers.After a Data transfer is initiated through direct register read, or EASYDMA and data is successfully acquired, there is a unexplained power consumption of around 450uA even after a proper power off sequence and de-initialization is done. The other instances SPIM1, SPIM2 works fine which shares the same APIs following common sequences. Due to this battery is draining out and is considered to be a serious problem. Read that there are already existing problems for SPIM3 which causes data corruption and ANOMALY_198 has been developed. Should we relate both the issues ?. Please comment.

SDK15.0 and FREERTOS being used.

Regards,

Aswin Mathew

[Stian Røed Hafskjold]

Hi, please have a look at this anomaly and implement the suggested workaround: https://infocenter.nordicsemi.com/topic/errata_nRF52840_Rev2/ERR/nRF52840/Rev2/latest/anomaly_840_195.html?cp=3_0_1_0_1_26