Kb3926qf D2 Datasheet

KB3926QF D2 Datasheet - A Guide to the Keyboard Controller Chip

The KB3926QF D2 is a keyboard controller chip that is used in many laptop models. It is manufactured by ENE Technology, a Taiwanese company that specializes in embedded controllers and power management ICs. The KB3926QF D2 is part of the KB3926 series, which also includes the KB3926QF A1, B1, C0, C1, D3, and E0 variants. The KB3926QF D2 has a TCD13 package, which is a 128-pin thin chip scale package (TQFP) with a 14x14 mm body size and a 0.8 mm pin pitch.

The KB3926QF D2 is responsible for managing the keyboard and touchpad inputs, as well as other peripheral devices such as the power button, lid switch, battery gauge, fan speed, and thermal sensors. It communicates with the main CPU via the LPC (low pin count) bus, which is a serial interface that allows low-speed devices to connect to the motherboard. The KB3926QF D2 also supports the PS/2, SMBus, I2C, SPI, UART, and GPIO protocols for interfacing with various devices.

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The KB3926QF D2 has an internal 8051 microcontroller core that runs at 24 MHz. It has 32 KB of ROM for storing the firmware code and 256 bytes of RAM for data storage. It also has an external flash memory interface that can support up to 4 MB of flash memory for storing additional firmware code and configuration data. The KB3926QF D2 can be programmed using the ENE ISP (in-system programming) tool, which is a software application that allows users to update the firmware via the LPC bus.

The KB3926QF D2 datasheet provides detailed information about the chip's features, specifications, pin assignments, electrical characteristics, timing diagrams, register maps, and programming instructions. The datasheet can be downloaded from various online sources, such as [Alldatasheet], [ABC Semi], or [Datasheet39]. However, some of these sources may not have the latest version of the datasheet or may have incomplete or inaccurate information. Therefore, it is recommended to verify the datasheet with the official ENE website or contact the ENE technical support team for any questions or clarifications.

The KB3926QF D2 datasheet is an essential resource for anyone who wants to learn more about the keyboard controller chip and its functions. It can help users to troubleshoot any issues related to the keyboard or touchpad inputs, such as unresponsive keys, erratic cursor movements, or incorrect mappings. It can also help users to customize or modify the firmware code to suit their specific needs or preferences. However, users should be careful when handling or programming the chip, as any improper operation or damage may cause irreversible problems or void the warranty.

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