Description:

VL82C202 PC/AT-Compatible Memory Controller

The VL82C202 PC/AT-Compatible Memory Controller generates the row and column decodes necessary to support the dynamic RAMs used in PC/AT-type systems. In addition, the device allows six motherboard memory options for the user, from 512K-bytes up to a full 8M-byte system. In addition, the VL82C202 provides the chip select for the ROM and RAM memory, and drives the system's speaker. This optional Shadow RAM feature allows up to 384K-bytes of memory space to be copied to and executed out of high speed DRAM instead o slower EPROM.

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 VL82C202 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 20 MHz system clock
• Device is available as "cores" for user-specific designs
• Designed in CMOS for low power consumption