The 71V321 is a high-speed 2K x 8 Dual-Port Static RAMs with internal interrupt logic for interprocessor communications. The device provides two independent ports with separate control, address, and I/O pins that permit independent, asynchronous access for reads or writes to any location in memory. 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
  • On-chip port arbitration logic
  • BUSY output flag
  • Fully asynchronous operation from either port
  • Battery backup operation—2V data retention (L only)
  • TTL-compatible, single 3.3V power supply
  • Available in 52-pin PLCC, 64-pin TQFP and STQFP packages
  • Industrial temperature range (–40C to +85C) is available

Product Options

Orderable Part ID Part Status Pkg. Code Pkg. Type Lead Count (#) Temp. Grade Pb (Lead) Free Carrier Type Buy Sample
71V321L25JG Active PLG52 PLCC 52 C Yes Tube
Availability
71V321L25JG8 Active PLG52 PLCC 52 C Yes Reel
Availability
71V321L25PFG Active PNG64 TQFP 64 C Yes Tray
Availability
71V321L25PFG8 Active PNG64 TQFP 64 C Yes Reel
Availability
71V321L25PFGI Active PNG64 TQFP 64 I Yes Tray
Availability
71V321L25PFGI8 Active PNG64 TQFP 64 I Yes Reel
Availability
71V321L25TFG Active PPG64 TQFP 64 C Yes Tray
Availability
71V321L25TFGI Active PPG64 TQFP 64 I Yes Tray
Availability
71V321L35JG Active PLG52 PLCC 52 C Yes Tube
Availability
71V321L35JG8 Active PLG52 PLCC 52 C Yes Reel
Availability
71V321L35JGI Active PLG52 PLCC 52 I Yes Tube
Availability
71V321L35JGI8 Active PLG52 PLCC 52 I Yes Reel
Availability
71V321L35PFGI Active PNG64 TQFP 64 I Yes Tray
Availability
71V321L35PFGI8 Active PNG64 TQFP 64 I Yes Reel
Availability
71V321L25TFG8 Active PPG64 TQFP 64 C Yes Reel
Availability

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
71V321 Datasheet Datasheet PDF 223 KB
User Guides & Manuals
Cypress Discontinued Dual-port and FIFO to IDT Cross Reference Guide Guide PDF 123 KB
Application Notes & White Papers
AN-70, Dual-Port Interrupt Expansion Application Note PDF 129 KB
AN-91, The Most Commonly Asked Questions About Async Dual-Ports Application Note PDF 197 KB
AN-68, Dual-Port SRAM Simplifies PC-to-TMS320 Interface Application Note PDF 198 KB
AN-14, Dual-Port w/ Semaphore Arbitration Application Note PDF 183 KB
AN-09, Dual-Port SRAMs Yield Bit-Slice Designs Application Note PDF 156 KB
AN-253, Introduction to Multi-Port Memories Application Note PDF 97 KB
PCNs & PDNs
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#: A1309-03 Additional Assembly Sources Product Change Notice PDF 398 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-0302-05, New mold compound EME-G700 series Product Change Notice PDF 65 KB
PCN#: G-0302-06, New die attach 3230 from Ablestik Product Change Notice PDF 150 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

Software & Tools

Title Other Languages Type Format File Size Date
71V321PF TQFP IBIS Model Model - IBIS ZIP 12 KB