The WPCE773LA0DG acts as the "first responder" on a laptop motherboard. Even when a laptop is powered off, this chip remains energized by a standby power rail ( 3D3V_AUX_S5 ) to monitor system states. Its primary duties include:
Extended range of -40°C to 105°C (TA).
The power management channel supports ACPI-compliant states (S0 through S5). It monitors power buttons, lid switches, and power rails. It executes hardware power-up sequences by enabling step-down regulators in a strict chronological order. Functional Pin Configuration
A verified datasheet breaks down the exact operational parameters required to design around or troubleshoot this chip. Below are the fundamental technical characteristics of the WPCE773LA0DG: Specification Details Winbond Electronics / Nuvoton Technology Part Number WPCE773LA0DG Package Type QFP-128 / LQFP-128 Pins Operating Temp Range Extended range: -40°C to 105°C Primary Category Microcontrollers / Embedded Systems Multi-I/O Application Laptop Motherboard Power Sequencing & Keyboard Matrix Primary Functions in Motherboard Architecture wpce773la0dg datasheet pdf verified
The 128-pin LQFP package distributes signals across several functional groups. Below are the most critical pins monitored during hardware troubleshooting: 1. Power and Ground Rails
Specifically older or legacy notebook models requiring stable EC management.
Datasheet Verified: WPCE773LA0DG Controller Specifications Now Available The WPCE773LA0DG acts as the "first responder" on
Coordinating the power-up sequence and sleep states (S3, S5).
Includes multiple GPIOs, SMBus interfaces for communicating with the battery and thermal sensors, and a specialized interface to the host CPU via LPC (Low Pin Count) bus.
For engineers, repair technicians, or procurement specialists looking for the , this guide provides a deep dive into the technical specifications, pinout, applications, and where to source this component. 1. What is the WPCE773LA0DG? : Super I/O
Nuvoton Technology Corporation (formerly Winbond)
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The verified datasheet includes two critical application notes that are missing from unverified copies.
: Super I/O, Keyboard Controller (KBC), and Advanced Power Management Embedded Controller.