TPS65987D: GPIO State in sleep mode

Jon Key

Intellectual 920 points

Part Number: TPS65987D

Hi all,

When the TPS65987D drops into sleep mode, are the GPIO pins driven to their last known state?

Thank you for the support,

Jon

over 6 years ago

0 Scott T over 6 years ago

TI__Expert 4455 points

Hi Jon,

Let me check this and I will answer tomorrow.

Regards,
Scott

0 Scott T over 6 years ago in reply to Scott T

TI__Expert 4455 points

Hi Jon,

State is maintained in sleep mode. You can prove this with an EVM and LED. Enable Sleep Mode in the Sleep Mode Register, allow sleep mode (no I2C traffic, no attached cable), and you will see lit LEDs are maintained.

You may need to use the App Config tool in Debug mode to configure an LED as output and set High. For example, the TPS65988EVM has an LED PDO_1 controlled by GPIO14 that can be used for this test.

Regards,
Scott

0 Jon Key over 6 years ago in reply to Scott T

TI__Intellectual 920 points

Thank you Scott!

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TPS65987D: GPIO State in sleep mode