特性
- True Dual-Ported memory cells which allow simultaneous access of the same memory location
- Fully asynchronous operation from either port
- Full on-chip hardware support of semaphore signaling between ports
- Battery backup operation—2V data retention (LA only)
- TTL-compatible
- single 5V (±10%) power supply
- Available in 52-pin PLCC and 64-pin TQFP packages
- Industrial temperature range (–40C to +85C) is available
描述
The 71342 is a high-speed 4K x 8 Dual-Port Static RAM containing a fully independent semaphore logic block to assist in arbitrating between ports. This block contains unassigned flags which can be accessed by either side, however, only one side can control the flag at any time. An automatic power down feature, controlled by CE and SEM, permits the on-chip circuitry of each port to enter a very low standby power mode (both CE and SEM HIGH).
产品参数
| 属性 | 值 |
|---|---|
| Core Voltage (V) | 5 |
| Bus Width (bits) | 8 |
| Density (Kb) | 32 |
| Pkg. Code | PNG64 |
| Interface | Async |
| I/O Type | 5.0 V TTL |
| Access Time (ns) | 20, 25 |
| Temp. Range (°C) | -40 to 85°C, 0 to 70°C |
| Architecture | Dual-Port |
| Organization | 4K x 8 |
| Function | Semaphore |
封装选项
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) | Pitch (mm) |
|---|---|---|---|
| TQFP | 14.0 x 14.0 x 1.4 | 64 | 0.8 |