The WPCE773LA0DG is an Embedded Controller (EC) manufactured by Nuvoton Technology Corporation (formerly part of Winbond). It is commonly used in laptop motherboards and industrial PCs for system management tasks. Key Technical Specifications
Manufacturer: Nuvoton Technology Corporation America (originally Winbond). Package Type: QFP-128 (128-pin Quad Flat Package).
Operating Temperature: Extended range of -40°C to 105°C (TA).
Functionality: Acts as a Super I/O and Embedded Controller, managing legacy functions (serial/parallel ports, keyboard control) and advanced hardware monitoring.
Host Interfaces: Typically utilizes Low Pin Count (LPC) or I²C interfaces to communicate with the mobile system. Verified Datasheet Resources
Because this component is often proprietary or restricted to OEMs, full datasheets can be difficult to find on public portals. However, technical snapshots and availability can be verified through these industry-standard sources:
Detailed Parts Information: View technical summaries and stock levels at Ariat Tech. wpce773la0dg datasheet pdf verified
Product Context & Schematics: Contextual data regarding its use in specific laptop designs (like Wistron motherboards) can be found at The Datasheet Archive.
Supply & Logistics: For procurement details and technical help, you can check Veswin or Jotrin Electronics.
The WPCE773LA0DG is an Embedded Controller (EC) and I/O controller chip manufactured by Nuvoton Technology Corporation (formerly under the Winbond brand). It is commonly used in laptop motherboards, such as those for Apple MacBook Pro models, to manage system-level tasks. Key Specifications & Features Package Type: QFP-128 (Quad Flat Package with 128 pins).
Operating Temperature: Extended range from -40°C to 105°C (TA), making it suitable for industrial and demanding commercial environments.
Category: Integrated Circuits (ICs) / Processors / Microcontrollers.
Primary Function: Acts as an I/O Controller and Power Sequencer in mobile computing systems. The WPCE773LA0DG is an Embedded Controller (EC) manufactured
Application Context: frequently paired with system DC/DC controllers (like TPS51125) and thermal sensors in complex motherboard designs. Verified Datasheet & Sourcing
Verified technical summaries and stock availability can be found through authorized distributors and documentation archives:
Technical Summary: Ariat Technology provides a verified overview of the manufacturer specs and lead times.
Procurement: Detailed pricing and "fake threat" analysis (noted at 34% in the open market) are available via WIN SOURCE .
Specific Device Usage: For those repairing older Apple hardware (e.g., MacBook Pro A1278), Wit Computers lists this chip specifically for BIOS/EFI firmware interactions.
Here are a few options for a post about the WPCE773LA0DG datasheet, tailored to different platforms (like a tech forum, blog, or social media). Total Pins: 128 (LQFP, 14x14mm body, 0
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.
| Parameter | Min | Typ | Max | Unit | |-----------|-----|-----|-----|------| | VDD supply | 3.0 | 3.3 | 3.6 | V | | Input low voltage (VIH) | 2.0 | – | VDD+0.3 | V | | Input low voltage (VIL) | -0.3 | – | 0.8 | V | | Output sink current (IOL) | – | 8 | 12 | mA | | ADC reference | – | 3.3 | – | V | | Operating temp (commercial) | 0 | – | 70 | °C |
0x8000 – 0xFFFF (32 KB windowed) + paged access up to 128 KB total.0x0000 – 0x0FFF (4 KB)0x80 – 0xFF (standard 8051 plus extended EC registers)Have a correction or found a newer revision?
Contact the author via the comments section below. We update this article whenever a new verified datasheet emerges.
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