The 71321 is a high-speed 2K x 8 Dual-Port Static RAM with internal interrupt logic for interprocessor communications. It is designed to be used as a stand-alone 8-bit Dual-Port RAM or as a "MASTER" Dual-Port RAM together with the 71421 "SLAVE" Dual-Port in 16-bit-or-more word width systems which would result 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.

Features

  • True Dual-Ported memory cells which allow simultaneous access of the same memory location
  • Two INT flags for port-to-port communications
  • Easily expands data bus width to 16-or more- bits using SLAVE 71421
  • On-chip port arbitration logic
  • BUSY output flag
  • Fully asynchronous operation from either port
  • Battery backup operation – 2V data retention (LA only)
  • TTL-compatible, single 5V ±10% power supply
  • Available in 52-Pin PLCC and TQFP, 64-Pin TQFP and STQFP packages
  • Industrial temperature range (-40C to +85C) is available

Product Options

下单器件 ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
71321LA20JG Active PLG52 PLCC 52 C Yes Tube
Availability
71321LA20JG8 Active PLG52 PLCC 52 C Yes Reel
Availability
71321LA20PFG Active PNG64 TQFP 64 C Yes Tray
Availability
71321LA20PFG8 Active PNG64 TQFP 64 C Yes Reel
Availability
71321LA20TFG Active PPG64 TQFP 64 C Yes Tray
Availability
71321LA20TFG8 Active PPG64 TQFP 64 C Yes Reel
Availability
71321LA25JGI Active PLG52 PLCC 52 I Yes Tube
Availability
71321LA25JGI8 Active PLG52 PLCC 52 I Yes Reel
Availability
71321LA25PFGI Active PNG64 TQFP 64 I Yes Tray
Availability
71321LA25PFGI8 Active PNG64 TQFP 64 I Yes Reel
Availability
71321LA25TFGI Active PPG64 TQFP 64 I Yes Tray
Availability
71321LA25TFGI8 Active PPG64 TQFP 64 I Yes Reel
Availability
71321LA55PPGI Active PPG52 TQFP 52 I Yes Tray
Availability
71321LA55PPGI8 Active PPG52 TQFP 52 I Yes Reel
Availability
71321LA55TFG Active PPG64 TQFP 64 C Yes Tray
Availability
71321LA55TFG8 Active PPG64 TQFP 64 C Yes Reel
Availability
71321SA35TFG Active PPG64 TQFP 64 C Yes Tray
Availability
71321SA35TFG8 Active PPG64 TQFP 64 C Yes Reel
Availability
71321SA55JG Active PLG52 PLCC 52 C Yes Tube
Availability
71321SA55JG8 Active PLG52 PLCC 52 C Yes Reel
Availability

技术资料

文档标题 他の言語 文档类型 文档格式 文件大小
数据手册与勘误表
71321/421 Datasheet Datasheet PDF 281 KB
使用指南与说明
Cypress Discontinued Dual-port and FIFO to IDT Cross Reference Guide Guide PDF 38 KB
应用指南 &白皮书
AN-70, Dual-Port Interrupt Expansion Application Note PDF 56 KB
AN-68, Dual-Port SRAM Simplifies PC-to-TMS320 Interface Application Note PDF 92 KB
AN-91, The Most Commonly Asked Questions About Async Dual-Ports Application Note PDF 87 KB
AN-09, Dual-Port SRAMs Yield Bit-Slice Designs Application Note PDF 69 KB
AN-253, Introduction to Multi-Port Memories Application Note PDF 36 KB
PCN / PDN
PDN# : SP-17-02 PRODUCT DISCONTINUANCE NOTICE FOR SPO DEVICES Product Discontinuation Notice PDF 645 KB
PCN# : TB1703-01 Change of MSL Level on PLCC-52 Product Change Notice PDF 157 KB
PCN# : A1606-02 Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 567 KB
PCN# : A1602-01(R1) Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB
PCN# : A1602-01 Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB
PCN# : TB1504-01R1 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 95 KB
PCN# : TB1504-01 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 50 KB
PCN#: A-0410-02, Change IDT marking logo with new IDT gridless w Product Change Notice PDF 24 KB
PCN# : A-0610-02 ASAT China as Alternate Facility for CABGA/CVBGA/FPBGA/TQFP/PQFP Product Change Notice PDF 252 KB
PCN# A-0607-06 MMT Thailand as Alternate Assembly Facility for PLCC, SOIC 150mil/300mil Product Change Notice PDF 223 KB
A-0603-04 Transfer TQFP and PQFP from ASAT HK to ASAT China Product Change Notice PDF 164 KB
PCN#: TB-0512-01 Reel Color Changed from Blue to Black Product Change Notice PDF 729 KB
PCN A-0506-03; Packing Material Change Product Change Notice PDF 290 KB
PCN#: A-0412-04 - To comply with Pb-free labels - Green Products Product Change Notice PDF 80 KB
PCN#: A-0310-01, Green Products Product Change Notice PDF 26 KB
PCN#: A-0309-04, new mold compound G600 material Product Change Notice PDF 134 KB
PCN#: G-0302-06, New die attach 3230 from Ablestik Product Change Notice PDF 150 KB
PCN#G-0302-05, New mold compound EME-G700 series Product Change Notice PDF 65 KB
PCN# G-0206-08, Orientation of square PQFP & TQFP Product Change Notice PDF 150 KB
PCN# G-0110-06 REV.1 Mold Compound Product Change Notice PDF 48 KB
PCN# G-0203-05 Mold Compound Product Change Notice PDF 40 KB
PCN SM-0202-02 Wafer Fab Transfer, Fab 2 to Fab4 Product Change Notice PDF 40 KB
PCN# G-0110-06 Mold Compound Product Change Notice PDF 47 KB
PCN# G0106-01, Moisture Sensitive Label Change Product Change Notice PDF 274 KB
PCN# G9911-05, To qualify low alpha mold compound. Product Change Notice PDF 44 KB

软件与工具

文档标题 他の言語 文档类型 文档格式 文件大小
71321J PLCC HSpice Model Model - HSPICE Z 19 KB
71321PF TQFP IBIS Model Model - IBIS ZIP 11 KB