Primarily Winbond (often branded as Nuvoton in modern stock). Package Type: LQFP-128 (128-pin QFP).
for a particular laptop model if you have a schematic.
The WPCE773LA0DG is not a standard programmable microcontroller. It is a , meaning its firmware is permanently burned onto the chip during manufacturing. It cannot be reprogrammed by the end-user. Instead, it contains dedicated code that it executes upon power-up. Corrupted operation is often linked to the external BIOS ROM (e.g., MX25L1605DM ) that stores the system's main firmware. If the chip fails, it must be physically replaced with a new or known-good donor chip.
: The laptop shows zero response, and no status LEDs illuminate when plugging in a verified working AC adapter.
Input signal to reset the controller without cycling power.
The WPCE773LA0DG acts as the central hub for system management before and after the main CPU powers on. It operates on a low-power architecture to ensure continuous monitoring even when the system is in a sleep or standby state. Key Responsibilities
The chip constantly reads thermal sensors located near the CPU, GPU, and battery pack. Based on these temperature registers, it adjusts Pulse Width Modulation (PWM) signals sent to the system cooling fans to maintain safe thermal limits. 4. Battery and Charging Management
). It is commonly used in laptop and mobile computing platforms to handle system-level tasks such as power management, keyboard scanning, and thermal monitoring. ariat-tech.com 📄 Verified Datasheet and Technical Specs
: Contains block diagrams and contextual schematics for various board implementations. Veswin Component Database
In the world of motherboard repair, laptop chip-level troubleshooting, and embedded system design, few components are as critical—or as notoriously difficult to source correct documentation for—as the . This IC, manufactured by Nuvoton Technology (formerly Winbond), is an Embedded Controller (EC) found mainly in legacy Intel-based laptops, industrial motherboards, and point-of-sale (POS) systems.
As an Embedded Controller, the WPCE773LA0DG typically manages the following system-level operations: Power Management:
Used where specialized I/O management and power sequencing are required.
(now part of Nuvoton Technology). It is widely used in laptop motherboards, such as the Apple MacBook Pro A1286, to manage low-level system functions. ariat-tech.com Core Specifications Manufacturer: Winbond / Nuvoton Technology Corporation America. Package Type: (128-pin Quad Flat Package). Device Category: Integrated Circuits (ICs) / Processors / Microcontrollers. Operating Temperature: Extended range from -40°C to 105°C cap T sub cap A Lead-Free Status: RoHS Compliant. ariat-tech.com Functional Roles