WPCE773LA0DG Datasheet PDF Verified: A Comprehensive Overview

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WPCE773LA0DG

I spent some time tracking down the specs for the controller IC. A lot of the links online were either broken or pointing to sketchy file lockers.

If you are troubleshooting motherboard circuits or need the pinout for this specific NuvoTon/Winbond chip, you can grab the verified datasheet below.

Table 10-7 details the VBAT (pin 128) monitoring. If voltage drops below 2.0V, the EC automatically resets the RTC registers. This is a common cause of "CMOS checksum error" on motherboards using this chip. Replace the backup battery before replacing the EC.

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