VL82C102 PC/AT-Compatible Memory Controller

The VL82C102 PC/AT-Compatible Memory Controller generates the row address strobe (RAS) and column address strobe (CAS) necessary to support the dynamic RAMs used in PC/AT-type systems. In addition, the device allows five motherboard memory options for the user, up to a full 4M-byte system. Four of the five options allow a full 640K-bytes user area to support the disk operating system (DOS). In addition, the VL82C102 provides the upper addresses to the I/O slots, the chip select for the ROM and RAM memory, and drives the system speaker.

The device is manufactured with VLSI's advanced high-performance CMOS process and is available in JEDEC-standard 84-pin plastic leaded chip carrier (PLCC) package. The VL82C102 is part of the PC/AT-compatible chips sets available from VLSI.

• Fully compatible with IBM PC/AT-type designs
• Completely performs memory control function in IBM PC/AT-compatible systems
• Replaces 20 integrated circuits on PC/AT-type motherboard
• Supports up to 12 MHz system clock
• Device is available as "cores" for user-specific designs
• Designed in CMOS for low power consumption

Two versions, VL82C102A and VL82C102B, see datasheets for details.