Overview
Description
The 71V321 is a high-speed 2K x 8 dual-port static RAM 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 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 (–40 °C to +85 °C) is available
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