Kb926qf Datasheet [exclusive] May 2026

1. Overview

• Part Number and Manufacturer: Confirm the part number (KB926QF) and the manufacturer.
• Product Description: Look for a brief description of the device to understand its function, application area, and features.

Parallel Port

• PD[0:7] (data), PSTB (strobe), PAF (autofeed), PINI (initialize), PSLCT (select), etc.

4. DIY Retro Computing

Enthusiasts building DOS-compatible systems using modern LPC-to-ISA bridges integrate Super I/O chips like the KB926QF to retain floppy and parallel port support.

Key Features (Typical for this chip family):

• LPC (Low Pin Count) interface to the host system.
• Legacy I/O support:
  • Serial ports (UARTs, usually 2–4)
  • Parallel port (SPP/EPP/ECP)
  • Floppy disk controller
  • PS/2 keyboard & mouse controller
• Hardware monitoring:
  • Temperature sensors (supports external thermal diodes)
  • Voltage monitoring (multiple power rails)
  • Fan tachometer inputs and PWM fan control
• GPIO pins (General Purpose I/O for board-level functions)
• Watchdog timer & power management logic
• CIR (Consumer Infrared) receiver/transmitter support
• Package: Typically 128-pin QFP (QF = Quad Flat Pack)

⚠️ Note: The exact feature set depends on the specific suffix and firmware configuration. KB926QF datasheets often exceed 200+ pages, containing register maps, timing diagrams, and programming info. kb926qf datasheet

Symptom: System Shuts Down Due to Overheat False Alarm

• Check: Hardware monitor inputs – a shorted thermistor or incorrect divider resistor.
• Datasheet use: Identify which VIN pin corresponds to “CPU Temp” and measure analog voltage against lookup table.