It8995e 128 Datasheet Jun 2026

The EC requires a standby voltage rail to monitor the power button before the system turns on.

Generally share identical logical maps and can be substituted safely for one another on motherboards mapped for standard CX layouts.

IT8995E-128 Embedded Controller (EC) or Super I/O chip manufactured by ITE Tech. Inc. . It is commonly used in laptop motherboards, such as the ASUS X541UVK

The data suggests there are two physical variants of this controller. The QFN-40 (6x6mm) variant likely contains only the USB Power Delivery controller and power management IC, while the TQFP-128 variant is the full-featured Embedded Controller found on most motherboards. The "128" in the name often refers to the pin count of the larger package. it8995e 128 datasheet

To enable UART A at COM1 (0x3F8, IRQ4), write to register 0x60 = 0xF8, 0x61 = 0x03, and 0x70 = 0x04.

While a full public datasheet from the manufacturer is often restricted to partners, you can find reference information and technical details on these platforms: : Access technical documents like the IT8995E-128 PDF Component Suppliers

As a "Super I/O" or Embedded Controller, the chip serves as the hardware supervisor for the following systems: The EC requires a standby voltage rail to

is a highly integrated, 128-pin Embedded Controller (EC) and Keyboard Controller (KBC) engineered by ITE Tech. Inc. . Primarily found in modern laptop motherboards, this IC manages essential low-level sub-systems that execute long before the main operating system boots. This comprehensive technical article functions as a companion reference guide to the data configurations found in the . Core Specifications and Architectural Overview

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The most likely reason is that the IT8995E-128 was designed as a custom component for a specific major OEM, most probably ASUS . In such business relationships, the datasheet is provided directly to the customer under a non-disclosure agreement. It is never intended for public release, which is why it is so difficult to locate on ITE’s official website. The QFN-40 (6x6mm) variant likely contains only the

On some notebook architectures, a freshly installed, blank IT8995E-128 will automatically mirror or pull its software payload from the main system BIOS ROM chip during the initial startup sequence.

Check the RSMRST# (Resume Reset) signal. It should transition from 0V to 3.3V when the power button is pressed, signaling the PCH that standby power is stable. Conclusion