特性
- 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
7009 - Block Diagram
描述
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.
