A 1 MB, 100 MHz integrated L2 cache memory with 128b interface and ECC protection

Abstract

Several cache-DRAMs have been reported, but all require multiple chips to implement an L2 cache system. The advent of 20 ns, 16 Mb DRAM technology has made a high-speed single-chip 1MB cache possible, replacing multiple SRAM and logic modules, saving board space and reducing power. Multichip-module (MCM) packaging further optimizes the electrical characteristics of the processor-cache connection. An in-line level-2 1 MB cache chip that has DRAM density contains high-speed SRAM and MCM technology.