Crucial for writing firmware or debugging motherboard issues.
The IC supervises the Advanced Configuration and Power Interface (ACPI) states (S0 through S5). It processes the physical press of the laptop power button, verifies that system power rails are stable, and issues the power-good ( PWROK ) signals required to wake up the CPU and chipset. 2. Keyboard Control (KBC) and Matrix Scanning
Users on repair forums have shared critical real-world data points that effectively serve as application notes:
Current market data suggests a for this specific part number in the open market. When purchasing a replacement for a repair, ensure you are buying from a verified distributor that offers a functional warranty. WPCE773LA0DG - The Datasheet Archive
The is an input/output (I/O) controller chipset produced by Winbond Electronics (often associated with Nuvoton). It is primarily used in laptop motherboards to manage critical low-level system functions. Technical Specifications wpce773la0dg datasheet pdf verified
Integrated Circuits (ICs) — Processors / Microcontrollers. Package Type: (128-pin Quad Flat Package). Operating Temperature: Extended range from -40°C to 105°C Compliance: Lead-free / RoHS Compliant. Typical Applications:
Understanding the WPCE773LA0DG: A Deep Dive into the Nuvoton/Winbond Multi-I/O Controller
If a laptop is "dead" (won't power on) or has malfunctioning peripherals, the WPCE773LA0DG is a primary suspect. Dead Motherboard:
). 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 Crucial for writing firmware or debugging motherboard issues
The WPCE773LA0DG is a surface-mount embedded controller used for power sequencing, keyboard control, thermal management, and I/O interfacing. It is typically associated with two manufacturers:
The is a specialized integrated circuit (IC) from Nuvoton Technology (formerly Winbond). You’ll most often find it doing the essential, unglamorous work of powering up a laptop, scanning keystrokes, or controlling the cooling fan. It is a vital Embedded Controller (EC) and Super I/O (SIO) chip, quietly bridging the gap between your computer’s main processor and its peripherals.
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
| Symptom | Verified Diagnosis | Action | | :--- | :--- | :--- | | | AC_IN# signal (Pin 93) stuck high instead of low. | Check external components on the AC adapter detect line; if shorted, replace EC. | | Laptop turns on, no display | Corrupted or incompatible BIOS causing EC to hang during POST. | Re-flash BIOS chip; check connections between EC and BIOS ROM. | | Overheating on startup | Short within EC causing internal power FET to fail, pulling excessive current. | Immediate replacement of the WPCE773LA0DG required. | WPCE773LA0DG - The Datasheet Archive The is an
Acts as a Super I/O or Embedded Controller (EC) , managing power sequences, keyboard interfaces, and system monitoring.
Useful for viewing the chip in the context of full motherboard schematics.
The WPCE773LA0DG was used extensively in many popular mid-to-late 2000s laptop models. Verified field sources show it is found in:
: Individual keys or entire rows fail to register even after replacing the physical keyboard.
Available in a QFP-128 (Quad Flat Package with 128 pins).
Originally produced by Winbond Electronics , often listed under Nuvoton Technology Corporation America in modern databases. How to Access the Verified Datasheet PDF