TMS570LS0714: TMS570 GPIO status in the process of powered off

David Bai

Part Number: TMS570LS0714

Hi Team

When the GPIO is pulled down in normal operation, during TMS5700714APZQQ1 powered off , if the GPIO pin can be operated or not? If not, what the status of the GPIO? For example, in the process of powered off, what's the status of Pin37 as below (Point A)? Thanks a lot.

over 7 years ago

0 QJ Wang over 7 years ago

TI__Guru**** 196266 points

Hi David,

All GPIO signals are configured as inputs while nPORRST is low and immediately after nPORRST goes High. While nPORRST is low, the input/output buffers

are disabled.

0 QJ Wang over 7 years ago in reply to QJ Wang

TI__Guru**** 196266 points

Hi David,

The voltage level at Pin37 is 0.38v, it is ok even the MCU is not powered at all. Please notice that the input voltage level to the GIO pins should not exceed the absolute maximum value (4.6V).

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TMS570LS0714: TMS570 GPIO status in the process of powered off