It8995e — 128 Datasheet
| Parameter | Description / Value | |-----------|----------------------| | | ITE Tech. Inc. | | Part Number Variants | IT8995E‑128 CXA / DXA / CXS (different firmware/configurations) | | Package Type | TQFP‑128 (128‑pin Thin Quad Flat Package), body size 14×14 mm (QFP‑128) | | Core Function | Programmable Super I/O / Embedded Controller (EC) | | Supply Voltage (VCC) | 3.3V (typical) | | Integrated Flash Memory | 128 KB (hence the “-128” suffix) – holds the EC firmware | | Programmability | Fully programmable – requires a pre‑programmed firmware file | | Supported Interfaces | LPC (Low Pin Count), SPI (for BIOS communication), SMBus, GPIO | | Temperature Range | Industrial: -40°C to +85°C (typical) | | Clock Source | External 32.768 kHz crystal or internal oscillator | | Common Companion Chips | Winbond 25Q64 series SPI flash, BQ24780S charger, Realtek ALC3251 audio codec |
This duality is at the core of its powerful functionality. Acting as the "brain" of the system board, it communicates with the main CPU and BIOS, orchestrating critical system-level tasks such as power sequencing, thermal management, battery charging, and keyboard control. At the same time, its underlying design enables high-power delivery over modern USB-C interfaces. This makes the IT8995E-128 a particularly versatile component, capable of bridging legacy system management protocols with next-generation connectivity standards.
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:
If soldering using leaded solder, the alloy melting point typically rests around 180°C , with an optimal joint flow temperature of 210°C to 215°C . it8995e 128 datasheet
The datasheet for this chip highlights several specialized functions for mobile and industrial computing:
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
The IT8995E-128 is a multi-functional chip integrating several key subsystems: Acting as the "brain" of the system board,
Understanding the physical package is crucial for board-level repair. The most commonly encountered variant in notebooks (like the ASUS X441NC) is the , often marked with suffixes like "-CXA" or "-DXA".
A particularly useful resource is page, which provides a generic pinout for 128‑pin SIO chips that closely mirrors the IT8995E‑128.
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. Embedded controllers must be resilient because if they
Information on (like SVOD or Vertyanov) used to flash this EC. A pinout diagram if you are troubleshooting power rails. IT8995E-128/CXA ITE - IC Components
These chips are almost exclusively found on . They act as the "brain" behind the main CPU, handling low-level tasks like power management, keyboard scanning, and fan control.
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.