Deep Dive: Deciphering the ITE IT8995E-128 Datasheet If you’ve ever cracked open a modern notebook—especially an ASUS or similar laptop—you’ve likely spotted a square, multi-legged chip labeled . For repair technicians and hardware enthusiasts, this "Super I/O" or Embedded Controller (EC) is the gatekeeper of the motherboard.
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.
| Register Offset | Name | Description | |----------------|------|-------------| | 0x07 | Logical Device Number | Select active device (UART, LPT, GPIO, etc.) | | 0x21 | GPIO Direction | 0 = input, 1 = output | | 0x22 | GPIO Polarity Inversion | 1 = invert input | | 0x24 | GPIO Pull-up Enable | Internal 100kΩ pull-up | | 0x60–0x67 | Base Address Registers | I/O base for UART/LPT | | 0x70 | Interrupt Select | IRQ mapping (3,4,5,7,9,10,11,12) | | 0x71 | Fan Tachometer Divisor | Sets measurement range |
| Pin # | Name | Type | Function | |-------|------|------|----------| | 1 | LAD0 | I/O | LPC address/data line 0 | | 2 | LAD1 | I/O | LPC address/data line 1 | | ... | ... | ... | ... | | 64 | VCC | PWR | 3.3V supply | | 128 | GND | PWR | Ground |
It8995e 128 Datasheet -
Deep Dive: Deciphering the ITE IT8995E-128 Datasheet If you’ve ever cracked open a modern notebook—especially an ASUS or similar laptop—you’ve likely spotted a square, multi-legged chip labeled . For repair technicians and hardware enthusiasts, this "Super I/O" or Embedded Controller (EC) is the gatekeeper of the motherboard.
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. it8995e 128 datasheet
| Register Offset | Name | Description | |----------------|------|-------------| | 0x07 | Logical Device Number | Select active device (UART, LPT, GPIO, etc.) | | 0x21 | GPIO Direction | 0 = input, 1 = output | | 0x22 | GPIO Polarity Inversion | 1 = invert input | | 0x24 | GPIO Pull-up Enable | Internal 100kΩ pull-up | | 0x60–0x67 | Base Address Registers | I/O base for UART/LPT | | 0x70 | Interrupt Select | IRQ mapping (3,4,5,7,9,10,11,12) | | 0x71 | Fan Tachometer Divisor | Sets measurement range | Deep Dive: Deciphering the ITE IT8995E-128 Datasheet If
| Pin # | Name | Type | Function | |-------|------|------|----------| | 1 | LAD0 | I/O | LPC address/data line 0 | | 2 | LAD1 | I/O | LPC address/data line 1 | | ... | ... | ... | ... | | 64 | VCC | PWR | 3.3V supply | | 128 | GND | PWR | Ground | In modern computing, these chips are the "silent
