It8995e 128 Datasheet — Repack

Do not assume a TQFP-128 chip is a direct replacement just because the pin count matches. The internal register configuration and bootloader are different across these models. The IT8995E-128 is frequently interchanged with the IT8995E-12B , although the functionality is presumed identical.

For detailed technical specs and pinout diagrams, you can find the datasheet overview on sites like IC Components or Atom Bilgisayar . IT8995E-128/CXA ITE - IC Components

When sourcing or identifying an IT8995E-128 chip, you will encounter a variety of suffix codes printed on the IC itself (like CXA , DXA , CXS ). These are not part of the formal "IT8995E-128" part number, but rather denote different aimed at OEM customers (primarily ASUS).

Equipped with dedicated driving matrices, the chip scans multi-row and multi-column hardware keyboard arrays directly. It decodes matrix intersections natively and translates raw tactile inputs into standard PS/2 or USB-hid scancodes forwarded to the CPU host controller. 3. Thermal Subsystems and Hardware Monitoring it8995e 128 datasheet

| Pin | Signal | Description | |------|--------|-------------| | 1 | LCLK | 33 MHz clock from PCH | | 2 | LFRAME# | Frame signal for cycle start/end | | 3 | LRST# | LPC reset (active low) | | 4 | LAD0 | Multiplexed address/data line 0 | | 5 | LAD1 | Multiplexed address/data line 1 | | 6 | LAD2 | Multiplexed address/data line 2 | | 7 | LAD3 | Multiplexed address/data line 3 | | 8 | LDRQ# | DMA request line | | 9–12 | GND | Digital ground |

Acts as a Power IC/SIO controller to manage power-on sequences and hardware monitoring in personal electronics and enterprise systems. Embedded Systems:

From a detailed analysis of repair logs on the forum for the ASUS X441NC motherboard, the following pins have been mapped: Do not assume a TQFP-128 chip is a

Article last updated: May 2026. For the latest revision of the IT8995E-128 datasheet, refer to ITE’s official product change notifications.

, to read or write the internal firmware needed for the chip to communicate with a specific motherboard. Zeus Mining IT8995E-128/CXA ITE - IC Components

LQFP-128 (Low-profile Quad Flat Package with 128 pins). For detailed technical specs and pinout diagrams, you

If you are replacing this chip, specialized equipment and skills are required:

To isolate an IT8995E-128 failure state, verify the following pins using an oscilloscope or digital multimeter: Measurement Step Target Pin Function Group Expected Value VCC / VSTB Pins +3.3V DC Must be present immediately when the charger is connected. 2. Clock Oscillation Crystal Oscillator Input 32.768 kHz Validates internal clock tree execution state. 3. Hardware Reset WRST# / EC_RST# High ( 3.3V ) If stuck low ( 0V ), the chip remains locked in reset state. 4. Trigger Out Toggles 3.3V →right arrow 0V →right arrow 3.3V Pulses low when the physical laptop power key is pressed. Sourcing and Replacement Guidelines

). It interacts directly with the primary Power Management IC (PMIC) and system regulators. The EC handles: Power button signal debouncing ( PBTN_OUT# ) Core rail activation verification ( PM_SLP_S3# , PM_SLP_S5# )

IT8995E-128 (variants: IT8995E-128-CXA, -CXS, -DXA, etc.)

Check the RSMRST# (Resume Reset) signal. It should transition from 0V to 3.3V when the power button is pressed, signaling the PCH that standby power is stable. Conclusion