The is a highly specialized Embedded Controller (EC) and Super I/O multi-controller chip designed for laptop motherboards, industrial embedded systems, and mobile computing platforms. Finding a comprehensive datasheet for legacy architecture like this can be challenging because Winbond's Advanced PC Product line was transitioned to Nuvoton Technology Corporation.
For repair technicians dealing with a "No Power / No POST" state, the timing diagram inside the datasheet lists the precise nanosecond delays required between the stabilization of main power ( 3D3V_AUX_S5 ) and the assertion of the EC_RST# (Embedded Controller Reset) line. Sourcing Insights: Counterfeits and Market Status
The laptop turns on but the cooling fan runs instantly at maximum RPM, causing severe noise.
The is a highly specialized Embedded Controller (EC) / Multi-I/O controller manufactured by Winbond Electronics (with subsequent licensing and distribution support via Nuvoton Technology Corporation America ). Packaged in a compact 128-pin QFP / LQFP design, this integrated circuit is a foundational component within laptop motherboards, industrial computing platforms, and mobile subsystems. wpce773la0dg datasheet pdf better
It handles input from the built-in laptop keyboard and touchpad.
The WPCE773 series acts as the primary hardware manager on system motherboards. It bridges low-speed peripheral devices directly to the central processing unit (CPU) or Platform Controller Hub (PCH). Technical Specification Winbond Electronics / Nuvoton Technology Package / Case Type 128-Pin QFP / LQFP (Quad Flat Package) Device Classification Multi-I/O / Embedded Controller (EC) Temperature Range Extended Industrial (-40°C to +105°C) Interface Protocol LPC (Low Pin Count) bus architecture Primary System Role Power Sequencing, Keyboard Control, System Monitoring Functional Responsibilities of the WPCE773LA0DG
The multi-controller manages the transition states of a laptop (S0 active state down to S5 deep sleep shutdown). It listens for the physical power button trigger, verifies power-good signals from primary buck converters (like the 3.3V and 5V system rails), and releases the reset signal to the PCH/CPU. 2. Embedded Keyboard Controller (KBC) The is a highly specialized Embedded Controller (EC)
: Verification of LAD0-LAD3 , LFRAME# , and LCLK pins is essential when auditing communication faults between the controller and the main chipset. 2. Firmware Interface and SPI Subsystems
I/O Controller / Super I/O with Embedded Controller features. Package Type: QFP-128 (128-pin Quad Flat Package). Operating Temperature: Extended range of -40°C to 105°C ( TAcap T sub cap A ).
Navigating the WPCE773LA0DG Datasheet: A Comprehensive Engineering Guide Sourcing Insights: Counterfeits and Market Status The laptop
Essential for verifying signal paths and troubleshooting power rails during laptop motherboard repairs.
Understanding the WPCE773LA0DG Go to product viewer dialog for this item. : The Ultimate Guide to Finding a Better Datasheet PDF
When working without a direct PDF datasheet, engineers rely on motherboard schematics like the Wistron "Roberts" project or the "JV50" board layouts to map pins. The QFP128 package maps critical subsystems across specific clusters: Pin Cluster Block Typical Schematic Labels Primary Function VCC , AVCC , VSTBY
(formerly part of Winbond). It is primarily designed for mobile platforms like laptops and netbooks to manage low-level system tasks. Core Technical Specifications Manufacturer: (Legacy Winbond series) Package Type: QFP-128 (128-pin Quad Flat Package) Main Application: Mobile system power management and I/O control. Known Integration: Commonly found in laptop designs such as the Packard Bell SJM50 series and certain Acer TravelMate motherboards. Functional Roles in System Design
: Serial bus used to communicate directly with the CPU chipset for BIOS instructions and I/O mapping.