特性
- 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
描述
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.
产品参数
| 属性 | 值 |
|---|---|
| Core Voltage (V) | 3.3 |
| Bus Width (bits) | 8 |
| Density (Kb) | 16 |
| Pkg. Code | PNG64, PPG64 |
| Interface | Async |
| I/O Type | 3.3 V LVTTL |
| Access Time (ns) | 25, 35 |
| Temp. Range (°C) | -40 to 85°C, 0 to 70°C |
| Architecture | Dual-Port |
| Organization | 2K x 8 |
| Function | Busy, Interrupt, Master |