It8995e 128 Datasheet |verified| -

IT8995E-128 Datasheet: A Complete Technical Reference for Embedded Controllers

Introduction

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.

Input Management: Interfaces with the laptop keyboard and touchpad. it8995e 128 datasheet

Part 3: Pinout and Signal Descriptions (128-LQFP)

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: Often serves as the primary controller for built-in

Conclusion

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. particularly for industrial PCs

Core Peripherals Integrated

Serial Ports: Two full-duplex 16C550-compatible UARTs with 128-byte FIFOs.
Parallel Port: IEEE 1284-compatible EPP/ECP mode.
PS/2 Ports: Two PS/2 interfaces (Keyboard & Mouse) with wake-up support.
Fan Controllers: Up to 4 fan tachometer inputs and 3 PWM outputs.
Voltage & Temperature Monitoring: 8-channel 12-bit ADC for external sensors.
CIR (Consumer Infrared): One infrared receiver/transmitter.
System Management: SMBus 2.0 master/slave interface.

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

Power Sequencing

VCC (3.3V) must rise before or simultaneously with VCC_RTC.
A 1µF decoupling capacitor placed near each VCC pin (pins 22,45,78,101).
A 10µF bulk capacitor on the main 3.3V rail.