It8995e 128 Datasheet Page

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.

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:

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 it8995e 128 datasheet

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:

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

The IT8995E-128 is an embedded multi-controller (EC) manufactured by ITE Tech. Inc., commonly used in laptops and personal electronics for power management, keyboard control, and system monitoring. It is a high-performance integrated circuit (IC) known for balancing power efficiency with complex task handling. Technical Overview ITE IT8995E-128/CXA is a specialized Integrated Circuit (IC)

Manufacturer: ITE Tech. Inc. (often listed via authorized distributors like Worldway Electronics).

Package Type: Standard QFP128 (Quad Flat Package with 128 pins).

Common Variants: IT8995E-128/CX, IT8995E-128/CXA, and IT8995E-128/DXA.

Safety & Compliance: Fully RoHS compliant (lead-free), featuring built-in electrostatic discharge (ESD) protection and overheating safeguards. Key Features & Applications

Applications: Primarily used in communications equipment, enterprise systems, and personal electronics (especially laptop motherboards).

Compatibility: Designed for seamless integration into existing embedded infrastructures without requiring specialized adapters.

Performance: Capable of handling complex system tasks while maintaining a low power profile, making it a staple for energy-efficient designs.

System Integration: Supports a wide range of I/O options and communication protocols to interface with sensors, peripherals, and control systems. Datasheet Resources

While full manufacturer-direct PDFs are often restricted to authorized partners, comprehensive technical summaries and datasheet downloads are available through specialized component databases: GPIO 0–7: Can be mapped to UART A

Detailed Technical Summaries: IC-Components provides safety features and quality certification details.

Stock & Distribution Data: HK Inventory tracks availability and batch codes (e.g., 2024+, 2025+) for procurement.

Reference Documents: A product overview can be found on Scribd, covering basic footprint and symbol data.

It is important to clarify that the IT8995E is not a standard general-purpose microcontroller (like an STM32 or PIC). Instead, it is a specialized Embedded Controller (EC) and Super I/O chip manufactured by ITE Tech Inc. (ITE).

These chips are almost exclusively found on laptop and desktop computer motherboards. They act as the "brain" behind the main CPU, handling low-level tasks like power management, keyboard scanning, and fan control.

Because this is a specialized component often sold under Non-Disclosure Agreements (NDAs) to Original Design Manufacturers (ODMs) like Lenovo, HP, Dell, and ASUS, a full public datasheet is rarely available.

However, based on the technical architecture of ITE's IT898x/IT899x series, here is a Deep Technical Analysis of the IT8995E (and its common variant IT8995E-128).

2. GPIO and Alternative Functions (Pins 13–80)

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:

GPIO 0–7: Can be mapped to UART A (TXD/RXD/RTS/CTS/DTR/DSR/DCD/RI).
GPIO 20–23: Configurable as PWM fan outputs (FAN_PWM1–3).
GPIO 40–47: Eight analog inputs for voltage monitoring (ADC_IN0–7).
GPIO 60–63: PS/2 clock/data lines.

Common applications

Laptop embedded controller / keyboard controller
System power sequencing and battery/charging control
Fan control and thermal monitoring (when paired with sensors)
Board-level I/O and GPIO expansion
Repair/replacement part for motherboard service

Typical Applications

Notebook and laptop embedded controller
Chromebooks and compact laptops
All-in-one PCs and small form-factor motherboards
Battery-powered embedded devices requiring power sequencing and sensor monitoring
Platform management in industrial or consumer electronics