UCD3138: When the power level increases, The UCD3138 will reset, and we check the SYSESR_REG_PORRST_Bit=1, however, the VDD3.3V is perfect. so why does the device UCD3138 reset?

Xiaobin Li

Prodigy 10 points

Part Number: UCD3138

as the title described! thanks!

over 2 years ago

0 Ian Bower over 2 years ago

TI__Genius 17090 points

The PORRST is normally set on power up. If you want to know if the UCD is being cleared by power off, you will need to clear the power up once it is on.

Are any of the other exception bits set?

0 Ian Bower over 2 years ago in reply to Ian Bower

TI__Genius 17090 points

This must be resolved, as there has been no response for several days, so I'm going to mark it as resolved.

Power management

Power management forum

UCD3138: When the power level increases, The UCD3138 will reset, and we check the SYSESR_REG_PORRST_Bit=1, however, the VDD3.3V is perfect. so why does the device UCD3138 reset?