A 256K-bit dynamic RAM-with high alpha immunity

✍ Scribed by Akira Endo; Satoru Ito; Masamichi Ishihara

• Publisher: Elsevier Science
• Year: 1984
• Tongue: English
• Weight: 816 KB
• Volume: 15
• Category: Article
• ISSN: 0026-2692
• DOI: 10.1016/s0026-2692(84)80119-6

✦ Synopsis

The series consists of 262,144 word } I bit dynamic random ~ memories (DRAMs) utilizing the latest Hitachi 2 0m nchannel p _roc~ss___. There are two types of 256K-bit DRAMs. One has the-conventional page mode for high speed operalJon. The other has a new function, the nibble mode. The nibble mode makes possible very fast 4-1)it serial read/write operation. High alpha immunity is obtained by utilizing high memory cell capacitance, a metal folded-bit-line structure, and a fully VCC storage circuit. Redundancy technology is employed to enhance yield.