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MSP430G2553: MCU program is not running

Jia Hui Yong
Prodigy 90 points
Part Number: MSP430G2553

Tool/software:

Hi Team,

here is the background scenario of the issue we were facing. 

P2.3 IO controls the main 12V switch and also controls other devices or other SOCs. Some faulty chips were found: after powering on, the program can be successfully flashed and entered, but the MCU on the board is unable to set P2.3 to high level as intended, so the main 12V is not turned on. It is suspected that either the MCU is not running the full program or the P2.3 IO pin is damaged, please help to verify.

On the board, the MCU's supply voltage is the normal 3.3V. After removing the MCU from the board and replacing it with another chip, the MCU on the board is able to set P2.3 to high level as intended, and the main 12V is successfully turned on.

Please kindly help to review if there is any issue with the schematic.

Thanks.

JH

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