It8995e 128 Datasheet (Must Try)
Hobbyists reverse-engineering old laptops use the datasheet to access GPIO pins for custom projects, such as reading battery status LEDs or adding external sensors.
According to the IT8995E-128 datasheet, the chip operates within the following parameters:
| Parameter | Specification | |-----------|----------------| | Package Type | LQFP-128 (Low-profile Quad Flat Package) | | Operating Voltage | 3.3V ± 5% (with 5V tolerant I/Os) | | Core Function | Super I/O with Embedded Controller (EC) | | Host Interface | LPC (Low Pin Count) bus up to 33 MHz | | GPIO Pins | Up to 64 programmable GPIOs | | Temperature Range | -20°C to +85°C (Industrial grade) | | Power Management | ACPI 6.0 compliant, Sleep states S0–S5 |
The IT8995E-128 datasheet includes a reference design for a typical motherboard. Below is a simplified schematic partial:
The IT8995E-128 is a LPC (Low Pin Count) interface-based Super I/O controller from ITE Tech. Inc. It integrates legacy I/O functions and advanced hardware monitoring for embedded systems, industrial PCs, and motherboards. The “128” suffix typically indicates 128-pin LQFP or QFP packaging.
If you are troubleshooting a laptop motherboard with an IT8995E:
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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
, to manage low-level power sequences and interface functions. Key Specifications Package Type : QFP-128 (128 pins). : Features 128KB e-Flash for internal programming. : Common suffixes include Application
: Acts as a power IC or SIO controller chip for embedded system management, often requiring an I/O programmer if it doesn't auto-program from the BIOS. Documentation & Resources
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
: Detailed value propositions and pin configuration summaries are available on IC-Components Repair Guides : Practical troubleshooting for this chip can be found on for specific laptop models. "Create a Piece"
Since your request mentioned "create an piece," here is a brief technical overview written for a blog or technical guide: The Heart of the Motherboard: Understanding the IT8995E-128
In the complex ecosystem of a laptop, the IT8995E-128 serves as the silent conductor. Housed in a dense 128-pin package, this Super I/O chip bridges the gap between hardware and software. It handles everything from the power-on sequence to keyboard inputs and thermal monitoring. For technicians, its 128KB of internal e-Flash is its most critical feature; without the correct firmware, a perfectly soldered chip may leave a device lifeless. Whether you're repairing an ASUS workstation or designing a new embedded system, the IT8995E-128 represents a strategic balance of high pin density and integrated control. programming instructions for a particular motherboard repair?
The "128" designation in the part number typically refers to the pin count or a specific firmware variant. The IT8995E is packaged in a 128-pin LQFP (Low-profile Quad Flat Package). Below are the core specifications derived from the datasheet family:
Search the manufacturer's website or authorized distributor pages for the exact "IT8995E 128" part number datasheet to get detailed electrical characteristics, pinout diagrams, timing tables, full register descriptions, recommended PCB layouts, and application circuits.
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IT8995E-128 Datasheet Write-up
Overview
The IT8995E-128 is a highly integrated, low-power, and cost-effective embedded controller designed for various applications, including industrial control, automation, and IoT devices. This write-up provides an in-depth analysis of the IT8995E-128 datasheet, highlighting its key features, specifications, and potential applications.
Key Features
Specifications
| Parameter | Value | | --- | --- | | CPU Core | ARM Cortex-M4 | | Maximum Frequency | 120 MHz | | Flash Memory | 128 KB | | SRAM | 32 KB | | Operating Voltage | 2.7V to 5.5V | | Temperature Range | -40°C to 85°C | | Package | LQFP-48 |
Potential Applications
The IT8995E-128 is suitable for a wide range of applications, including:
Conclusion
The IT8995E-128 is a highly integrated and versatile embedded controller that offers a rich set of peripherals, low power consumption, and a compact package. Its robust design and wide operating temperature range make it suitable for harsh industrial environments. With its ARM Cortex-M4 core and ample memory, the IT8995E-128 is an ideal choice for a wide range of applications, from industrial control and automation to IoT devices.
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: it8995e 128 datasheet
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
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. If you provide more details or context about
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
The IT8995E-128 is a high-performance Embedded Controller (EC) and Keyboard Controller (KBC) integrated circuit (IC) manufactured by ITE Tech. Inc.. It is a critical component commonly found in notebook motherboards, specifically used for managing essential low-level hardware functions and power sequencing. Key Technical Specifications
Architecture: Features an internal 128KB programmable eFlash (Embedded Flash) memory for storing firmware.
Package Type: Housed in a QFP128 (Quad Flat Package) or LQFP-128 leaded structure with 128 pins. Primary Functions: I/O Management: Controls keyboard and touchpad interfaces.
Power Control: Manages system power sequencing and battery charge management.
Thermal Monitoring: Handles temperature sensors and fan speed control.
Compatibility: Revisions like CXA, CXS, and DXA are often interchangeable in motherboard repairs, though confirming specific motherboard schematics is recommended for pin-to-pin accuracy. Application & Sourcing
This controller is widely integrated into ASUS notebook motherboards (such as the X543U and X705UB series). You can find these chips and related technical documentation through retailers and electronic component hubs like IC-Components, Atom Bilgisayar, and Worldway Electronics. IT8995E-128/CXA ITE - IC Components
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. low power consumption
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).