It8995e 128 Datasheet
In the complex ecosystem of modern computing, few components are as critical yet overlooked as the Super I/O controller. Among the industry leaders in this space is ITE Tech. Inc., and one of their advanced solutions is the IT8995E 128.
If you are searching for the IT8995E 128 datasheet, you are likely troubleshooting a laptop motherboard, working on embedded system design, or performing a board-level repair on a high-end notebook. This chip acts as the central nervous system for legacy and low-speed peripherals, managing everything from keyboard controllers to thermal monitoring.
This article consolidates the essential technical specifications, pinout details, functional blocks, and application notes typically found in the official IT8995E 128 datasheet. Note: While this guide provides deep technical insight, always refer to the official ITE documentation for absolute design validation.
Searching for the "it8995e 128 datasheet pinout" is a common query. While a full pinout table spans several pages, here are the critical signal groups:
| Pin Group | Pin Numbers (Approx.) | Signal Names | Function | | :--- | :--- | :--- | :--- | | Power/Ground | 1, 15, 32, 48, 64, 80, 96, 112 | VDD, VSS | Core logic and I/O ring power | | LPC Bus | 5-9 | LCLK, LFRAME#, LAD0-3 | Communication with PCH | | Keyboard/Mouse | 20, 21 | KBCLK, KBDAT | PS/2 clock and data | | UART A | 40-44 | TXD, RXD, RTS, CTS | Serial port 1 | | Hardware Monitor | 65-72 | VSEN1-8, TACH1-4 | Voltage sense and fan speed | | GPIO Ports | 73-107 | GP00-GP127 | Configurable I/O (multiplexed) |
Critical Note from Datasheet: The IT8995E 128 uses pin multiplexing. Several pins serve dual functions (e.g., GP27 can act as an external thermal sensor input or a simple digital I/O). Always consult the configuration registers section of the official PDF.
(Recreate schematic from datasheet showing:)
Understanding the internal architecture of the IT8995E 128 is impossible without analyzing the block diagram presented in the datasheet. The chip is divided into four primary domains:
If you are troubleshooting a laptop motherboard with an IT8995E:
The IT8995E-128 is a high-performance Embedded Controller (EC) and Keyboard Controller (KBC) integrated circuit (IC) developed by ITE Technology. It is primarily found in notebook and laptop motherboards, serving as a critical "Super I/O" chip that manages low-level system functions. Key Specifications & Features
The IT8995E-128 is designed with a specific focus on low power consumption and high integration to reduce the physical footprint on a motherboard.
Package Type: LQFP-128 (Low-profile Quad Flat Package with 128 pins).
Memory: Includes 128KB of internal programmable eFlash (Embedded Flash). Interfaces Supported: LPC (Low Pin Count) interface. SMBus/I2C for communication with peripheral devices. PS/2 for legacy keyboard and mouse support.
GPIO (General Purpose Input/Output) for various system signals.
Safety Features: Built-in electrostatic discharge (ESD) protection and overheating safeguards. Primary Functions in Laptops
As an embedded controller, the IT8995E-128 acts as the "manager" for several essential hardware tasks:
Power Sequencing: Controlling the power-on and power-off cycles of the motherboard.
Keyboard & Touchpad Control: Processing signals from the user's input devices.
Battery Management: Monitoring charge levels and managing charging circuits.
Thermal Monitoring: Regulating fan speeds based on temperature sensor data. Programming and Compatibility
One of the most important aspects for repair technicians is that the IT8995E-128 must be programmed for the specific motherboard model it is being installed on.
Firmware Synchronization: While it may sometimes auto-sync from the main BIOS, it often requires manual programming via the I2C or keyboard connector interface to initiate the system cycle.
Version Interchangeability: Revisions like CXA, CXS, DXA, and DXS are often interchangeable depending on the specific motherboard schematic. For example, the IT8995E-128/DX model often allows for both DXA and DXS variants.
Application Examples: This IC is commonly used in Asus motherboards, such as the Asus X407UB Rev 2.0. Repair & Installation Tips
If you are replacing this chip, specialized equipment and skills are required:
Soldering: High-level soldering skills are needed due to the 128-pin high-density layout.
Programming Tools: Technicians typically use a dedicated programmer (like the RT809H or SVOD) to flash the 128KB eFlash with the correct .bin file before or after soldering.
Diagnostic Indicators: Faulty controllers often lead to "no power" issues, dead batteries not charging, or unresponsive keyboards. Go to product viewer dialog for this item.
Ite It8995e-128-dxa It8995e 128 Dxa Tqfp Ec Power Ic Chip Chipset
IT8995E-128 highly integrated Embedded Controller (EC) and Super I/O (SIO) chipset manufactured by
. It is primarily used in laptop motherboards, including high-performance models like the Apple MacBook Pro, to manage low-level system functions such as power sequencing, keyboard control, and environmental monitoring. WIT Computers Key Technical Specifications Manufacturer: ITE Tech (ITE Technologies Inc.) Package Type: Housed in a (Quad Flat Package) with 128 pins. Internal Storage: 128kb of e-Flash Programmability: The chipset must be programmed it8995e 128 datasheet
after soldering onto a motherboard if it does not auto-program via the BIOS. Common versions include
. These are often interchangeable if the motherboard schematic specifies "IT8995E-128 CX" or "DX". Chipset Elektronik Core Functions & Applications System Management:
Acts as a Power IC/SIO controller to manage power-on sequences and hardware monitoring in personal electronics and enterprise systems. Embedded Systems:
Designed for industrial automation and advanced computing modules where continuous, dependable operation is required. Motherboard Integration:
Frequently found in laptop repair contexts (e.g., Apple MacBook Pro A1286) as a critical component for restoring normal machine operation after power-related failures. Zeus Mining Reference Resources
For detailed pinouts and electrical characteristics, you can refer to technical distributors and documentation platforms: Worldway Electronics for general category and application details. IC Components for package and thermal property information.
often hosts community-uploaded PDF datasheets and motherboard schematics. IC Components
If you are performing a repair, would you like to know about compatible programmers or specific motherboard schematics where this chip is commonly found? AI responses may include mistakes. Learn more It8995e 128 | PDF - Scribd
The IT8995E-128 is a high-performance Embedded Controller (EC) and Keyboard Controller (KBC) designed by ITE Technology, primarily used in laptop motherboards (e.g., ASUS models like X510U, X543U). Technical Overview Function: Manages low-level I/O processes. Memory: Features 128KB of internal programmable eFlash. Package: Industrial LQFP-128 leaded structure. Key Roles: Keyboard and touchpad interface management. System power sequencing. Battery charge and discharge management. Thermal monitoring (fan control and temperature sensors). Common Revisions & Compatibility Main Model: IT8995E-128. Revisions: Often seen as CXA or CXS.
Repair Note: CXA and CXS revisions are generally considered interchangeable in motherboard schematics. Quality & Safety Features Compliance: RoHS compliant for hazardous materials.
Protection: Built-in ESD protection (electrostatic discharge).
Safeguards: Integrated overheating protection to ensure hardware safety.
💡 Repair Tip: Because this chip contains internal Flash memory, it may require programming with specific firmware (firmware version varies by laptop model) before it will function correctly on a new motherboard. If you'd like, I can help you find: Specific schematics for a laptop model using this chip.
Information on programmers (like SVOD or Vertyanov) used to flash this EC. A pinout diagram if you are troubleshooting power rails. IT8995E-128/CXA ITE - IC Components
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
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? In the complex ecosystem of modern computing, few
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 ITE IT8995E-128 Go to product viewer dialog for this item.
(specifically variants like CXA, CXS, or DXA) is a high-performance Embedded Controller (EC) and Keyboard Controller (KBC) designed by ITE Tech primarily for notebook motherboards. Core Specifications & Features
The device functions as a central hub for managing low-level hardware tasks on a laptop motherboard: Package Type: 128-pin LQFP (Low Profile Quad Flat Package).
Memory: Features 128KB of internal programmable eFlash memory. Key Functions: I/O Management: Handles keyboard and touchpad interfaces.
Power Management: Manages power sequencing and battery charging.
Thermal Monitoring: Controls fan speeds and monitors temperature sensors.
System Wake-up: Supports various system wake-up functions for power management. Technical Details Manufacturer ITE Tech. Inc. Interface Typically interfaces via LPC or eSPI bus Operating Voltage Generally supports 1.8V / 3.3V logic (standard for ITE ECs) Programmability
Yes; often requires pre-programming with EC ROM firmware before installation Variants
CXA, CXS, DXA, and DXS (often interchangeable depending on the motherboard schematic) Application & Repair
This IC is widely used as a replacement part for malfunctioning power or I/O chips in notebook repairs. You can find technical summaries and purchase options from distributors like IC Components and Zeus Mining.
Note: If replacing this chip, ensure you have the correct firmware, as it may not automatically pull code from the BIOS upon assembly. IT8995E-128/CXA ITE - IC Components
ITE IT8995E-128 is a specialized Keyboard Controller (KBC) or "multi-controller" primarily used in laptop motherboards (such as the ASUS X543U) to manage low-level system functions. While a single consolidated datasheet is notoriously difficult to find publicly, it belongs to a family of ITE chips known for their robustness in enterprise and personal electronics. Key Specifications & Features
Based on technical listings and repair community reports, the IT8995E-128 includes several critical safeguards: Package Type : QFP-128 (Quad Flat Package with 128 pins). Protection Mechanisms : Features built-in Electrostatic Discharge (ESD) protection and overheating safeguards to prevent failure during manufacturing and use. Compliance RoHS compliant
, meeting international standards for lead-free electronic components. Common Variants : You may encounter specific versions like the IT8995E-128/CXA , which are often found in modern portable systems. IC Components Technical Application
This chip acts as the "brain" for hardware management before and after the main OS boots: Power Management
: Controls the power-on sequence and battery charging cycles. Thermal Control : Manages fan speeds and monitors system temperatures. Input/Output
: Handles the laptop keyboard, touchpad, and various system LEDs.
The ITE IT8995E-128 is a high-performance Embedded Controller (EC) and Keyboard Controller (KBC) designed primarily for notebook motherboards. It plays a critical role in managing low-level hardware functions, including power sequencing, thermal monitoring, and peripheral interfaces. Core Technical Specifications
The IT8995E-128 is characterized by its integration of essential system management tasks into a single, compact logic IC. Manufacturer: ITE Tech. Inc.
Package Type: LQFP-128 (Low Profile Quad Flat Package) with 128 pins
Programmable Memory: Internal 128KB programmable eFlash (Embedded Flash)
Key Revisions: CXA, CXS, and DXA; these are often interchangeable in many motherboard schematics (e.g., CXA/CXS can often replace "IT8995E-128 CX" models). Primary Functions and Applications
As a "Super I/O" or Embedded Controller, the chip serves as the hardware supervisor for the following systems:
Input Management: Interfaces with the laptop keyboard and touchpad.
Power Sequencing: Manages the boot process and power states of the motherboard.
Battery & Charging: Oversees battery charge management and monitoring.
Thermal Control: Handles fan control and monitors temperature sensors through dedicated internal registers. Repair and Programming Requirements
In professional repair scenarios, the IT8995E-128 is a common target for replacement when a laptop fails to power on or has keyboard/thermal issues. Critical Note from Datasheet: The IT8995E 128 uses
Programming Need: The chip contains a programmable section. While some motherboards (especially ASUS models) may automatically pull the required firmware from the BIOS upon first boot, others require manual programming using an EC ROM I/O Programmer after soldering.
Component Sourcing: New and refurbished units are available through specialized electronics distributors such as IC-Components and Zeus Mining.
Replacement Advice: Technicians recommend verifying the specific part number and revision (CXA, CXS, etc.) against the motherboard's boardview or schematic to ensure compatibility before installation.
For detailed pinout diagrams and register maps, users often refer to motherboard schematics for specific laptop models, as a full standalone public datasheet from ITE can be difficult to find outside of NDAs. IT8995E-128/CXA ITE - IC Components
The IT8995E-128 is an Embedded Controller (EC) or Super I/O chip manufactured by ITE Tech. Inc., commonly used in laptops and mobile computing devices for low-level system management. Key Features of IT8995E-128
The datasheet for this chip highlights several specialized functions for mobile and industrial computing:
Integrated Functions: Acts as a Keyboard Controller (KBC), handles power management, and performs thermal monitoring and peripheral interfacing.
Memory: Includes 128KB of internal Flash Memory, allowing for firmware storage directly on the chip.
Connectivity: Supports multiple standard interfaces, including LPC, SMBus, I2C, PS/2, and GPIO for communication with other system components.
Package: Housed in a 128-pin LQFP (Low-profile Quad Flat Package), providing high I/O flexibility and efficient heat dissipation.
Programming: The chip often requires programming after being soldered to a motherboard, which can be done via the I2C or keyboard interface.
Safety & Durability: Features built-in electrostatic discharge (ESD) protection and overheating safeguards to ensure long-term reliability. Applications
Laptops and Notebooks: Serving as the primary controller for power sequencing, battery charging logic, and keyboard input.
Industrial Automation: Used in embedded systems where precise control and continuous operation are required.
System Telemetry: Monitoring critical parameters like voltage and temperature to maintain system stability.
For detailed technical specs and pinout diagrams, you can find the datasheet overview on sites like IC Components or Atom Bilgisayar. IT8995E-128/CXA ITE - IC Components
IT8995E-128 is a specialized integrated circuit (IC) manufactured by ITE Tech. Inc. , primarily utilized as an Embedded Controller (EC)
or "Super I/O" chip in laptops and complex embedded systems. It is often responsible for low-level hardware management, such as power sequencing, keyboard control, and thermal monitoring. IC Components Core Overview Manufacturer: ITE Tech. Inc. Package Type:
(128-pin Quad Flat Package). This high pin count allows for extensive peripheral management and simultaneous interface connections. Applications:
Commonly found in communications equipment, enterprise systems, and personal electronics (specifically laptop motherboards). IC Components Key Features & Functionality
Based on its category as an embedded controller, the IT8995E-128 typically handles the following operations: Power Management:
Manages power-on/off sequencing and charging logic (often paired with specialized charging ICs). Interface Management:
Acts as a bridge for various I/O operations, consolidating multiple control functions into a single chip to reduce board space. System Monitoring:
Monitors system vitals like temperature and fan speeds to ensure hardware reliability. Keyboard & Touchpad Control:
Often serves as the primary controller for built-in input devices in notebook computers. IC Components Technical Specifications (Estimated) Compliance: Generally lead-free and RoHS compliant. Interchangeability: In repair communities (like
), this chip is noted for specific version compatibility; suffixes like "CXA" indicate specific firmware or hardware revisions. IC Components Repair & Replacement
Because the IT8995E-128 is a "Power IC" or Multi-I/O chip, its failure can lead to a device not powering on or specific ports (like the keyboard) failing. Technicians often use specialized programmers, such as the Vertyanov Successor
, to read or write the internal firmware needed for the chip to communicate with a specific motherboard. Zeus Mining IT8995E-128/CXA ITE - IC Components
Super I/O / keyboard controller (SIO) / embedded controller (EC) / I/O power-management chip used on laptop/mainboard designs. Often referenced as a programmable SIO with integrated power management and multiple peripheral interfaces.
The IT8995E-128 is a suitable Super I/O for embedded systems requiring legacy port support and hardware monitoring. Its 128-pin LQFP package balances integration and PCB area. Designers must follow the configuration sequence and electrical limits outlined in the official datasheet.
The IT8995E-128 is a highly integrated Super I/O (Input/Output) controller manufactured by ITE (Integrated Technology Express, Inc.). This chip is a cornerstone of modern motherboard design, particularly for industrial PCs, embedded systems, and high-end consumer laptops. Unlike basic I/O controllers, the IT8995E-128 bridges legacy interfaces (PS/2, LPC, UART) with advanced system management features.
This article consolidates the critical information from the IT8995E-128 datasheet, including electrical characteristics, pin configuration, functional blocks, and application circuits. Whether you are reverse-engineering a motherboard, developing BIOS firmware, or sourcing components for a repair, this guide serves as a practical datasheet companion.