It8995e 128 Datasheet May 2026

Below is a textual representation of the internal architecture based on the datasheet:

            ┌────────────────────────────────────────────────┐
            │            IT8995E-128 (LQFP-128)              │
            │                                                │
  LPC Bus ──┤ LPC Interface → Register Bank → Internal Bus  │
            │       │                                        │
            │       ├── UART A (with 128-byte FIFO) ── COM1 │
            │       ├── UART B (with 128-byte FIFO) ── COM2 │
            │       ├── Parallel Port (EPP/ECP) ─────── LPT1 │
            │       ├── PS/2 Controller ───────────── KBC/MSC│
            │       ├── Fan Control (PWM + Tach) ────── FAN1-4│
            │       ├── 12-bit ADC (8 channels) ─────── Volt/Temp│
            │       ├── SMBus 2.0 Master/Slave ─────── SMBus│
            │       ├── CIR Decoder/Encoder ────────── Infrared│
            │       └── GPIO Matrix (64 pins) ────────── GPIO0-63│
            │                                                │
            │   ┌───────┐      ┌────────┐     ┌──────────┐  │
            │   │ Power │      │ Clock  │     │  Watchdog│  │
            │   │ Mgmt. │      │ Gen.   │     │  Timer   │  │
            │   └───────┘      └────────┘     └──────────┘  │
            └────────────────────────────────────────────────┘

![Description]
(Refer to Fig. 1 in the datasheet – typically shows: LPC interface ↔ internal bus ↔ UARTs, parallel port, KBC, H/W monitor, GPIO) it8995e 128 datasheet

The IT8995E 128 is a compact embedded controller (EC) / microcontroller-class chip commonly used in notebook motherboards and power-management applications. It integrates multiple I/O interfaces, power-control features, and embedded memory to handle system management tasks such as keyboard scanning, battery charging control, thermal and fan management, ACPI event handling, and system power sequencing. Below is a textual representation of the internal

| Parameter | Value / Description | | :--- | :--- | | Part Number | IT8995E-128 | | Manufacturer | ITE Tech Inc. | | Core Logic | High-performance RISC (EC specific) | | Program Memory | 128 KB Internal Flash | | Package | 128-pin LQFP | | Interface | LPC Bus, SMBus, I2C, SPI (for debugging) | | Operating Voltage | 3.3V (Typical) | | Standby Current | < 1 mA (Critical for battery life) | | Temperature Range | Commercial (0°C to 70°C) or Industrial | battery charging control

When industrial PCs need parallel printers, legacy serial devices (RS-232), or PS/2 keyboards, designers integrate the IT8995E 128. The datasheet provides the register maps to initialize these ports via the BIOS.

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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