topic i.MX6UL SNVS current in i.MX Processors

i.MX6UL SNVS current

TammyTsai — Mon, 11 Sep 2023 06:06:04 GMT

Hi NXP team,

I would like to ask a question about the Battery Backup current.

The current of VDD_SNVS_IN of i.MX6UL will reach up to 500 uA.

Even if TAMPER PINs are not used, it will still be 205uA.

Using a CR2450 battery (about 550 mAh), such current consumption will run out of power in 2 months.

Products from other manufacturers have a maximum of around 20uA, or even less than 10uA.

Does NXP have any improvement plans or other suggestions for battery backup?

Best Regards,

Tammy

Re: i.MX6UL SNVS current

riteshmpatel — Tue, 12 Sep 2023 09:52:50 GMT

Hi @TammyTsai,

I hope you are doing well.

Please refer to the latest i.MX 6UltraLite Power Consumption Measurement Application Note. The current consumption in the SNVS domain is 22uA as mentioned in Table 10. SNVS measurement results. Apart from this, no other data is available.

I hope it helps!

Thanks & Regards,
Ritesh M Patel

Re: i.MX6UL SNVS current

TammyTsai — Fri, 06 Oct 2023 05:32:49 GMT

Hi @riteshmpatel,

Thanks for your reply.

How to address the BOOT_MODE requirement of step 2?

Could I switch BOOT_MODE by software?

Could you please described the method in detail?

Best Regards,

Tammy

Re: i.MX6UL SNVS current

riteshmpatel — Fri, 06 Oct 2023 09:29:15 GMT

Hi @TammyTsai,

I request you to please raise a new ticket for the additional query.

Thanks & Regards,
Ritesh M Patel