It8995e 128 Datasheet May 2026

The IT8995E 128 is superior for mobile applications due to its power-saving standby modes, detailed in Section 7.2 of the datasheet.

// Example: Enable UART1 at 0x3F8, IRQ 4
WriteByte(0x2E, 0x87); // Enter config mode
WriteByte(0x2F, 0x01);
WriteByte(0x2E, 0x07); // LDN 0x04 = UART1
WriteByte(0x2F, 0x04);
WriteByte(0x2E, 0x30); // Activate LDN
WriteByte(0x2F, 0x01);
WriteByte(0x2E, 0x60); // Base address MSB
WriteByte(0x2F, 0x03);
WriteByte(0x2E, 0x61); // Base address LSB
WriteByte(0x2F, 0xF8);
WriteByte(0x2E, 0x70); // IRQ
WriteByte(0x2F, 0x04);
WriteByte(0x2E, 0xAA); // Exit config mode

The IT8995E-128 is a versatile and rugged Super I/O controller that remains relevant for new designs requiring legacy interface support with modern power management. Its LQFP-128 packaging balances pin count and PCB space, making it ideal for embedded systems, thin clients, and industrial motherboards. The official datasheet is indispensable for configuring GPIO mapping, fan curves, and LPC bus timing.

Whether you are a BIOS engineer, a hardware hacker, or a repair technician, understanding the IT8995E-128 datasheet unlocks the full potential of this chip—from controlling external peripherals to monitoring system health.

References:

Article last updated: May 2026. For the latest revision of the IT8995E-128 datasheet, refer to ITE’s official product change notifications.

ITE IT8995E-128/CXA is a specialized Integrated Circuit (IC) known as an Embedded Controller (EC). In modern computing, these chips are the "silent workhorses" that manage critical low-level tasks like power sequencing, keyboard management, and thermal monitoring before the main CPU even wakes up. it8995e 128 datasheet

Below is a detailed blog post draft based on the technical specifications and operational features of this component.

Unlocking the IT8995E-128: The Silent Workhorse of Modern Motherboards

Have you ever wondered what happens the second you press the power button on your laptop? Before the Windows or macOS logo appears, a tiny but powerful chip—the ITE IT8995E-128 —is already hard at work.

In this post, we’ll dive deep into the datasheet of the IT8995E-128 to understand its role in system management, thermal control, and power efficiency. 1. What is the IT8995E-128? The IT8995E-128 is an Embedded Controller (EC)

manufactured by ITE Tech. It is commonly found in laptop motherboards and compact PC builds. Its primary job is to handle "housekeeping" tasks that would be inefficient for the main processor to manage. 2. Key Technical Specifications

According to its technical documentation, the IT8995E-128 features several "state-of-the-art" capabilities: Pin Configuration: | Feature | IT8995E 128 | IT8728F (Desktop)

setup, allowing for extensive Input/Output (I/O) flexibility. Package Type: Typically found in a QFP (Quad Flat Package)

, which is designed for excellent heat dissipation during rigorous operations. Power Consumption:

Engineered for high-speed processing with minimal power draw, making it ideal for battery-dependent devices. 3. Core Features and Functionality

The datasheet highlights several mission-critical functions: Advanced Communication:

It supports sophisticated multi-channel operations and various communication protocols to ensure seamless connectivity between system components. Multi-Voltage Support:

The chip is adaptable to various voltage levels, allowing it to interface with different hardware generations. Robust Signal Integrity: The IT8995E-128 is a versatile and rugged Super

Enhanced signal integrity is a priority, ensuring that commands (like a keystroke or a power-off signal) are executed without interference. 4. Safety and Reliability

Embedded controllers must be resilient because if they fail, the entire system fails to boot. The IT8995E-128 includes: Built-in Protections: It features integrated electrostatic discharge (ESD) protection overheating safeguards Environmental Resistance:

The chip is designed to withstand vibration and electromagnetic interference (EMI), ensuring a long operational life in mobile environments. Compliance: It meets international quality standards, including RoHS compliance for hazardous materials. Why Does the IT8995E-128 Matter for Repair and Design?

For engineers, the 128-pin layout offers the flexibility needed for sophisticated designs. For repair technicians, identifying this chip is crucial when dealing with "No Power" or "No Boot" issues, as it is often the gatekeeper for the system’s power rails. Need the full technical manual?

You can often find detailed schematics and programming guides on ITE Tech’s official website or through authorized distributors like IC-Components programming instructions for this specific IC? IT8995E-128/CXA ITE - IC Components

Most pins on the IT8995E-128 are multi-function. The datasheet defines a register map to select between GPIO, UART, fan control, or ADC input.

Common alternate functions:

The IT8995E 128 is a compact embedded controller (EC) / microcontroller-class chip commonly used in notebook motherboards and power-management applications. It integrates multiple I/O interfaces, power-control features, and embedded memory to handle system management tasks such as keyboard scanning, battery charging control, thermal and fan management, ACPI event handling, and system power sequencing.