AM62L: RTC power supply

JUNZHI LIN

Part Number: AM62L

Tool/software:

Dear Expert, if no low power mode is used and the RTC function is not required, can the VDD_RTC and VDDS_RTC pins be left floating? Will the SOC still be able to function normally?

3 months ago

0 Kallikuppa Sreenivasa 3 months ago

TI__Guru**** 190279 points

Hello JUNZHI LIN,

Thank you for the query.

JUNZHI LIN said:
can the VDD_RTC and VDDS_RTC pins be left floating? Will the SOC still be able to function normally?

Not connecting the VDD_RTC and VDDS_RTC supplies is not an allowed option.

For connecting the supplies when not used please refer the below section of the data sheet

6.11.2.2.1 No Low-Power Mode Sequencing

Refer below FAQ that provides links to commonly used collaterals including the data sheet to get started with AM62L based design

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1478018/faq-am62l-am62l32-am62l31-custom-board-hardware-design-collaterals-to-get-started

Regards,

Sreenivasa

0 JUNZHI LIN 3 months ago in reply to Kallikuppa Sreenivasa

Prodigy 120 points

Hello, I haven't found a clear answer regarding the content of the link. Could you please provide a more specific response? Thank you!

0 Kallikuppa Sreenivasa 3 months ago in reply to JUNZHI LIN

TI__Guru**** 190279 points

Hello JUNZHI LIN,

Thank you.

The recommendation is to connect VDDS_RTC and VDD_RTC to the same supply sources that is connected to the other supply rails listed in the columns that i have marked in the below table.

Regards,

Sreenivasa

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AM62L: RTC power supply