Description:

Overview

mR_Slug Notes: There was a 16MHz version the VL82CPCPM though this is likely vapourware.

The IBM PC/AT compatible chip set from VLSI Technology, Inc. supports 1-Megabit dynamic RAMs, and is utilized in systems with clock speeds up to 12 MHz. The chip set provides the IBM PC/AT compatible system with a completely compatible low-cost board design solution. Further, since the devices were designed using VLSIs design tools, the devices can be quickly modified for use as cores in user-specific designs. The five device chip set has been designed using the highest integration consistent with economic and reliable system design. The VL82C103 Address Buffer and VL82C104 Data Buffer are offered in separate packages, although their circuit is relatively small. If they were offered as a single device, the pin count would be extremely high, or some performance degradation would occur.

• 100% PC/AT-Compatible
• 1 ws/120ns DRAM. 0 ws/80ns DRAM
• 8 MHz Backplane with External Clock Modulation PAL
• Max 4MB RAM
• VL82C100 Peripheral Controller supports up to 16 MHz (or 20 MHz with -20QC). All other chips support up to 12 MHz system clock.
• Replaces up to 75 components on the PC/AT-type board. As well as several buffers, latches and other logic devices
  • VL82C100, 19 logic devices
  • VL82C101A, 10 integrated circuits (B version 36)
  • VL82C102A, 20 integrated circuits
  • VL82C103A, several buffers, latches and other logic devices
  • VL82C104, several buffers, latches and other logic devices
• VL82C103A Completely performs address buffer function in IBM PC/AT-compatible systems
• VL82C104 Completely performs data buffer function in IBM PC/AT-compatible systems
• Seven DMA channels
• 14 external interrupt requests
• Three timer/counter channels
• Sink 20 mA on slot driver outputs
• VL82C102A Completely performs memory control function in IBM PC/AT-compatible systems
• Devices are available as "cores" for user-specific designs
• Designed in CMOS for low power consumption

Documented parts

• VLSI VL82C100 (PC/AT-Compatible Peripheral Controller)
• VLSI VL82C101 (PC/AT-Compatible System Controller)
• VLSI VL82C102 (PC/AT-Compatible Memory Controller)
• VLSI VL82C103 (PC/AT-Compatible Address Buffer)
• VLSI VL82C104 (PC/AT-Compatible Data Buffer)