Unlike basic Super I/O chips of the past that merely handled serial ports and floppy drives, the IT8995E-128 features an integrated microcontroller core (often based on an 8051 or RISC architecture) and dedicated embedded flash memory or SRAM to execute specialized firmware. This firmware runs continuously, even when the laptop is completely powered off, as long as a standby voltage (usually +3V_EC) is present. Key Technical Specifications and Functions
The is a highly integrated Embedded Controller (EC) designed by ITE Tech Inc., commonly found in high-performance portable computing devices, including laptops and notebook motherboards. As a crucial component managing power, thermal regulation, and user interfaces, understanding the IT8995E-128 datasheet is essential for engineers, repair technicians, and hardware enthusiasts involved in laptop design or board-level repairs.
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 it8995e 128 datasheet
Acting as a dedicated Keyboard Controller (KBC), the chip actively scans matrix keyboard circuits, decodes key presses, and maps touchpad data over PS/2 or SMBus channels to relieve the CPU from low-level scanning routines. 3. Thermal Monitoring & Fan Regulation
Connect a 32.768 kHz crystal (load capacitance 12.5pF) between XIN and XOUT, with 15pF capacitors to ground. Unlike basic Super I/O chips of the past
| Symbol | Parameter | Min | Max | Unit | |--------|-----------|-----|-----|------| | VCC | Supply voltage | -0.3 | +4.0 | V | | VIN | Input voltage (5V tolerant) | -0.3 | +5.5 | V | | IOH | Output high current per pin | - | 8 | mA | | IOL | Output low current per pin | - | 16 | mA | | TSTG | Storage temperature | -55 | +125 | °C | | TJ | Junction temperature | - | +125 | °C |
Check if +3V_EC is present on the standby power pins. As a crucial component managing power, thermal regulation,
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.
The is an embedded multi-controller (EC) manufactured by ITE Tech. Inc. , commonly used in laptops and personal electronics for power management, keyboard control, and system monitoring. It is a high-performance integrated circuit (IC) known for balancing power efficiency with complex task handling. Technical Overview