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7009

Obsolete

128K x 8 Dual-Port RAM

Overview

The 7009 is a high-speed 128K x 8 Dual-Port Static RAM designed to be used as a stand-alone 1M-bit Dual-Port RAM or as a combination MASTER/SLAVE Dual-Port RAM for 16-bit-or-more word systems. An automatic power down feature controlled by CE permits the on-chip circuitry of each port to enter a very low standby power mode.
7009 - Block Diagram
7009 - Block Diagram
  • True Dual-Ported memory cells which allow simultaneous reads of the same memory location
  • 7009 easily expands data bus width to 16 bits or more
  • Interrupt Flag
  • On-chip port arbitration logic
  • Full on-chip hardware support of semaphore signaling between ports
  • Fully asynchronous operation from either port
  • Battery backup operation—2V data retention
  • TTL-compatible, single 5V (±10%) power supply
  • Available in 100-pin TQFP package
  • Industrial temperature range (-40C to +85C) is available

Documentation

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Schematic symbols, PCB footprints, and 3D CAD models from SamacSys can be found by clicking on the CAD Model links in the Product Options table. If a symbol or model isn't available, it can be requested directly from SamacSys.

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  1. The RX/62N Breakout Boards are here!

    Information and ordering info: www.delorie.com/rx62n-breakoutRelated post: http://www.renesasrulz.com/thread/3369I'm planning on offering some hand-assembled versions, but I don't have the RX chips yet (yes, due to the earthquake).  Plenty of blanks though.Per-blank cost ...

    Apr 13, 2011
  2. FLASH TYPE WITH DA-14580

    Hi....... We want to know that is there any flash type limitation exists with DA-14580.Currently we are using IS25LQ020B flash and we can't able to boot form it. However with smart snippets connect ,read,erase and burn operation execute successfully ,but sometime they give some error logs ...

    Jun 8, 2016
  3. default_app_on_connection calls app_easy_gap_advertise_with_timeout_stop() twice

    Hi, I am using SDK 5.0.3 In app_default_handlers.c, the function default_app_on_connection(...) checks if user_default_hnd_conf.adv_scenario==DEF_ADV_WITH_TIMEOUT and then calls app_easy_gap_advertise_with_timeout_stop(), then it calls default_advertise_stop_operation which does ...

    Jun 9, 2016
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