The 70121 is a high-speed 2K x 9 Dual-Port Static RAM designed to be used as a stand-alone 9-bit Dual- Port RAM or as a "MASTER" Dual-Port RAM together with the 70125 "SLAVE" Dual-Port in 18-bit-or-more word width systems. Using the IDT MASTER/SLAVE Dual-Port RAM approach in 18-bit-or-wider memory system applications results in full-speed, error-free operation without the need for additional discrete logic. An automatic power-down feature, controlled by CE, permits the on-chip circuitry of each port to enter a very low standby power mode.

特性

  • Fully asynchronous operation from either port
  • MASTER 70121 easily expands data bus width to 18 bits or more using SLAVE 70125 chip
  • On-chip port arbitration logic (70121 only)
  • BUSY output flag on Master
  • BUSY input on Slave
  • INT flag for port-to-port communication
  • Battery backup operation—2V data retention
  • TTL-compatible, signal 5V (±10%) power supply
  • Available in 52-pin PLCC
  • Industrial temperature range (–40C to +85C) is available for selected speeds
  • Green parts available, see ordering information

产品选择

下单器件 ID Part Status Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
Active PLCC 52 C 是的 Tube
Availability
Active PLCC 52 C 是的 Reel
Availability

文档和下载

文档标题 其他语言 类型 文档格式 文件大小 日期
数据手册与勘误表
70121/5 Data Sheet 数据手册 PDF 323 KB
使用指南与说明
Cypress Discontinued Dual-port and FIFO to IDT Cross Reference Guide 指南 PDF 123 KB
应用指南 &白皮书
AN-91, The Most Commonly Asked Questions About Async Dual-Ports 应用文档 PDF 197 KB
AN-70, Dual-Port Interrupt Expansion 应用文档 PDF 129 KB
AN-68, Dual-Port SRAM Simplifies PC-to-TMS320 Interface 应用文档 PDF 198 KB
AN-253, Introduction to Multi-Port Memories 应用文档 PDF 97 KB
AN-09, Dual-Port SRAMs Yield Bit-Slice Designs 应用文档 PDF 156 KB
PCN / PDN
PDN# : SP-17-02 PRODUCT DISCONTINUANCE NOTICE FOR SPO DEVICES 产品停产通告 PDF 645 KB
PCN# : TB1703-01 Change of MSL Level on PLCC-52 产品变更通告 PDF 157 KB
PCN#: A-0410-02, Change IDT marking logo with new IDT gridless w 产品变更通告 PDF 24 KB
PCN# A-0607-06 MMT Thailand as Alternate Assembly Facility for PLCC, SOIC 150mil/300mil 产品变更通告 PDF 223 KB
PCN#: TB-0512-01 Reel Color Changed from Blue to Black 产品变更通告 PDF 729 KB
PCN#: A-0412-04 - To comply with Pb-free labels - Green Products 产品变更通告 PDF 80 KB
PCN#: A-0310-01, Green Products 产品变更通告 PDF 26 KB
PCN#: A-0309-04, new mold compound G600 material 产品变更通告 PDF 134 KB
PCN # SM0308-02 Fab 2 to Fab 4 Transfer 产品变更通告 PDF 124 KB
PCN# G-0203-05 Mold Compound 产品变更通告 PDF 40 KB
PCN# G0106-01, Moisture Sensitive Label Change 产品变更通告 PDF 274 KB
PCN# G9911-05, To qualify low alpha mold compound. 产品变更通告 PDF 44 KB