I/O Controller 100-Pin PQFP

The LPC47B272 (AMI Keyboard BIOS version of the LPC47B27x) is a 3.3V PC98/PC99 compliant Super I/O controller.The LPC47B272 implements the LPC interface. The LPC47B272 provides fan control through two fan speed control output pins and two fan tachometer input pins. The true CMOS 765B core provides 100% compatibility with IBM PC/XTTM and PC/ATTM architectures in addition to providing data overflow and underflow protection. The parallel port is compatible with IEEE 1284, EPP, and ECP. The LPC47B272 incorporates sophisticated power control circuitry (PCC) which includes support for keyboard, mouse and consumer infrared wake-up events. The PCC supports multiple low power- down modes. The LPC47B272 provides the recommended functionality to support Windows "95. The I/O Address, DMA Channel and hardware IRQ of each logical device in the LPC47B272 may be reprogrammed through the internal configuration registers.

• LPC Interface
• 100 QPF Packaging
• 3.3V Operating Voltage
• 37 GPIO Pins
• Dual Game Port Interface
• MPU-401 MIDI Support
• ISA IRQ to Serial IRQ Conversion
• 37 GPIO
• 2 16C550A and NS16C550A Compatible UARTs
• 1 Multi-Mode Parallel Port with ChiProtectTM, EPP and ECP
• On-chip 12 mA AT bus drivers
• 1 Floppy Direct Drive support
• ISA Plug-and-Play Standard (Version 1.0a) Support