VL82C106 Combination I/O chip

The VL82C106 Combination replaces with a single 128-lead chip several of the commonly used peripherals found in PC/AT-compatible computers. This chip when used with the VLSI PC/AT-compatible chip set allows designers to implement a very cost-effective, minimum chip count motherboard containing functions that are common to virtually all PCs.

Features:

• Combines the following PC/AT peripheral chips:
  • VL16C450B UART - COM 1:
  • VL16C450B UART - COM 2:
  • Parallel printer port - LPT 1:
  • Keyboard/mouse ctrl. - KBD
  • Real-time clock - RTC
• Serial ports 100% 16C450B-compatible
• Bidirectional Line Printer Port (LPT)
• CMOS direct drive of Centronics type parallel interface
• PC/AT- or PS/2-compatible keyboard and mouse controller
• 146818A-compatible real-time clock (RTC)
• 16 bytes of additional standby RAM (66 bytes total)
• IDE bus control signals included (two external 74LS245 and one 74LS244, or equivalent, buffers are required)
• Seven battery-backed programmable chip select registers for auto-configuration
• Preprogrammed default chip select registers
• Programmable wait state generation
• 5 uA standby current for RTC, RAM and chip select registers
• Single 128-lead plastic quad flatpack