2K x 8 Dual-Port RAM w/Int

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, 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
71321LA20J Active PL52 PLCC 52 C No Tube Availability
71321LA20J8 Active PL52 PLCC 52 C No Reel Availability
71321LA20JG Active PLG52 PLCC 52 C Yes Tube Availability
71321LA20JG8 Active PLG52 PLCC 52 C Yes Reel Availability
71321LA20PF Active PN64 TQFP 64 C No Tray Availability
71321LA20PF8 Active PN64 TQFP 64 C No Reel Availability
71321LA20PFG Active PNG64 TQFP 64 C Yes Tray Availability
71321LA20PFG8 Active PNG64 TQFP 64 C Yes Reel Availability
71321LA20TF Active PP64 TQFP 64 C No Tray Availability
71321LA20TF8 Active PP64 TQFP 64 C No Reel Availability
71321LA20TFG Active PPG64 TQFP 64 C Yes Tray Availability
71321LA20TFG8 Active PPG64 TQFP 64 C Yes Reel Availability
71321LA25J Active PL52 PLCC 52 C No Tube Availability
71321LA25J8 Active PL52 PLCC 52 C No Reel Availability
71321LA25JGI Active PLG52 PLCC 52 I Yes Tube Availability
71321LA25JGI8 Active PLG52 PLCC 52 I Yes Reel Availability
71321LA25JI Active PL52 PLCC 52 I No Tube Availability
71321LA25JI8 Active PL52 PLCC 52 I No Reel Availability
71321LA25PF Active PN64 TQFP 64 C No Tray Availability
71321LA25PF8 Active PN64 TQFP 64 C No Reel Availability
71321LA25PFGI Active PNG64 TQFP 64 I Yes Tray Availability
71321LA25PFGI8 Active PNG64 TQFP 64 I Yes Reel Availability
71321LA25PFI Active PN64 TQFP 64 I No Tray Availability
71321LA25PFI8 Active PN64 TQFP 64 I No Reel Availability
71321LA25TF Active PP64 TQFP 64 C No Tray Availability
71321LA25TF8 Active PP64 TQFP 64 C No Reel Availability
71321LA25TFGI Active PPG64 TQFP 64 I Yes Tray Availability
71321LA25TFGI8 Active PPG64 TQFP 64 I Yes Reel Availability
71321LA25TFI Active PP64 TQFP 64 I No Tray Availability
71321LA25TFI8 Active PP64 TQFP 64 I No Reel Availability
71321LA35J Active PL52 PLCC 52 C No Tube Availability
71321LA35J8 Active PL52 PLCC 52 C No Reel Availability
71321LA35PF Active PN64 TQFP 64 C No Tray Availability
71321LA35PF8 Active PN64 TQFP 64 C No Reel Availability
71321LA35TF Active PP64 TQFP 64 C No Tray Availability
71321LA35TF8 Active PP64 TQFP 64 C No Reel Availability
71321LA45J Active PL52 PLCC 52 C No Tube Availability
71321LA45J8 Active PL52 PLCC 52 C No Reel Availability
71321LA55J Active PL52 PLCC 52 C No Tube Availability
71321LA55J8 Active PL52 PLCC 52 C No Reel Availability
71321LA55PF Active PN64 TQFP 64 C No Tray Availability
71321LA55PF8 Active PN64 TQFP 64 C No Reel Availability
71321LA55TF Active PP64 TQFP 64 C No Tray Availability
71321LA55TF8 Active PP64 TQFP 64 C No Reel Availability
71321LA55TFG Active PPG64 TQFP 64 C Yes Tray Availability
71321LA55TFG8 Active PPG64 TQFP 64 C Yes Reel Availability
71321SA20J Active PL52 PLCC 52 C No Tube Availability
71321SA20J8 Active PL52 PLCC 52 C No Reel Availability
71321SA20PF Active PN64 TQFP 64 C No Tray Availability
71321SA20PF8 Active PN64 TQFP 64 C No Reel Availability
71321SA20TF Active PP64 TQFP 64 C No Tray Availability
71321SA20TF8 Active PP64 TQFP 64 C No Reel Availability
71321SA25J Active PL52 PLCC 52 C No Tube Availability
71321SA25J8 Active PL52 PLCC 52 C No Reel Availability
71321SA25PF Active PN64 TQFP 64 C No Tray Availability
71321SA25PF8 Active PN64 TQFP 64 C No Reel Availability
71321SA25TF Active PP64 TQFP 64 C No Tray Availability
71321SA25TF8 Active PP64 TQFP 64 C No Reel Availability
71321SA35J Active PL52 PLCC 52 C No Tube Availability
71321SA35J8 Active PL52 PLCC 52 C No Reel Availability
71321SA35PF Active PN64 TQFP 64 C No Tray Availability
71321SA35PF8 Active PN64 TQFP 64 C No Reel Availability
71321SA35TF Active PP64 TQFP 64 C No Tray Availability
71321SA35TF8 Active PP64 TQFP 64 C No Reel Availability
71321SA35TFG Active PPG64 TQFP 64 C Yes Tray Availability
71321SA35TFG8 Active PPG64 TQFP 64 C Yes Reel Availability
71321SA45J Active PL52 PLCC 52 C No Tube Availability
71321SA45J8 Active PL52 PLCC 52 C No Reel Availability
71321SA55J Active PL52 PLCC 52 C No Tube Availability
71321SA55J8 Active PL52 PLCC 52 C No Reel Availability
71321SA55JG Active PLG52 PLCC 52 C Yes Tube Availability
71321SA55JG8 Active PLG52 PLCC 52 C Yes Reel Availability
71321SA55JI Active PL52 PLCC 52 I No Tube Availability
71321SA55JI8 Active PL52 PLCC 52 I No Reel Availability
71321SA55PF Active PN64 TQFP 64 C No Tray Availability
71321SA55PF8 Active PN64 TQFP 64 C No Reel Availability
71321SA55TF Active PP64 TQFP 64 C No Tray Availability
71321SA55TF8 Active PP64 TQFP 64 C No Reel Availability

Technical Documentation

Title Other Languages Type Format File Size Date
Datasheets & Errata
71321/421 Datasheet Datasheet PDF 141 KB Oct 28, 2008
Application Notes & White Papers
AN-70, Dual-Port Interrupt Expansion Application Note PDF 56 KB May 30, 2006
AN-91, The Most Commonly Asked Questions About Async Dual-Ports Application Note PDF 87 KB May 30, 2006
AN-68, Dual-Port SRAM Simplifies PC-to-TMS320 Interface Application Note PDF 92 KB May 30, 2006
AN-09, Dual-Port SRAMs Yield Bit-Slice Designs Application Note PDF 69 KB May 29, 2006
AN-253, Introduction to Multi-Port Memories Application Note PDF 36 KB May 29, 2006
PCNs & PDNs
PDN# : SP-17-02 PRODUCT DISCONTINUANCE NOTICE FOR SPO DEVICES Product Discontinuation Notice PDF 645 KB Sep 14, 2017
PCN# : TB1703-01 Change of MSL Level on PLCC-52 Product Change Notice PDF 157 KB May 8, 2017
PCN# : A1606-02 Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 567 KB Aug 25, 2016
PCN# : A1602-01(R1) Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB Apr 13, 2016
PCN# : A1602-01 Add Greatek Taiwan as Alternate Assembly Product Change Notice PDF 611 KB Feb 14, 2016
PCN# : TB1504-01R1 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 95 KB Oct 21, 2015
PCN# : TB1504-01 Qty per Reel Standardization for Selective Packages Product Change Notice PDF 50 KB Jul 20, 2015
PCN# G-0110-06 Mold Compound Product Change Notice PDF 47 KB Dec 13, 2001
PCN# G-0203-05 Mold Compound Product Change Notice PDF 40 KB Apr 15, 2002
PCN# : A-0610-02 ASAT China as Alternate Facility for CABGA/CVBGA/FPBGA/TQFP/PQFP Product Change Notice PDF 252 KB Oct 18, 2006
PCN# A-0607-06 MMT Thailand as Alternate Assembly Facility for PLCC, SOIC 150mil/300mil Product Change Notice PDF 223 KB Oct 5, 2006
PCN#: A-0412-04 - To comply with Pb-free labels - Green Products Product Change Notice PDF 80 KB Dec 13, 2004
PCN#: A-0410-02, Change IDT marking logo with new IDT gridless w Product Change Notice PDF 24 KB Nov 13, 2012
A-0603-04 Transfer TQFP and PQFP from ASAT HK to ASAT China Product Change Notice PDF 164 KB May 9, 2006
PCN# G0106-01, Moisture Sensitive Label Change Product Change Notice PDF 274 KB Jun 10, 2001
PCN#: A-0310-01, Green Products Product Change Notice PDF 26 KB Oct 9, 2003
PCN#: G-0302-06, New die attach 3230 from Ablestik Product Change Notice PDF 150 KB Mar 19, 2003
PCN#G-0302-05, New mold compound EME-G700 series Product Change Notice PDF 65 KB Mar 19, 2003
PCN# G9911-05, To qualify low alpha mold compound. Product Change Notice PDF 44 KB Nov 17, 1999
PCN A-0506-03; Packing Material Change Product Change Notice PDF 290 KB Jul 18, 2005
PCN#: TB-0512-01 Reel Color Changed from Blue to Black Product Change Notice PDF 729 KB Dec 15, 2005
PCN# G-0110-06 REV.1 Mold Compound Product Change Notice PDF 48 KB Apr 25, 2002
PCN# G-0206-08, Orientation of square PQFP & TQFP Product Change Notice PDF 150 KB Jun 16, 2002
PCN SM-0202-02 Wafer Fab Transfer, Fab 2 to Fab4 Product Change Notice PDF 40 KB Feb 24, 2002
PCN#: A-0309-04, new mold compound G600 material Product Change Notice PDF 134 KB Oct 6, 2003

Software & Tools

Title Other Languages Type Format File Size Date
71321PF TQFP IBIS Model Model - IBIS ZIP 11 KB Jun 30, 1997
71321J PLCC HSpice Model Model - HSPICE Z 19 KB Oct 11, 1998