特長
- True Dual-Ported memory cells which allow simultaneous access of the same memory location
- BUSY input flag
- INT flag for port-to-port communication
- Fully asynchronous operation from either port
- Battery backup operation–2V data retention (LA only)
- TTL-compatible, single 5V ±10% power supply
- Available in 48-pin DIP, LCC and Ceramic Flatpack, 52-pin PLCC, and 64-pin STQFP and TQFP packages
- Industrial temperature range (–40C to +85C) is available
説明
The 7140 is a high-speed 1K x 8 Dual-Port Static RAM designed to be used as a "SLAVE" Dual-Port RAM together with the 7130 "MASTER" Dual-Port in 16-bit-or-more word width systems which would result in full-speed, error free operation without the need for additional discrete logic. An automatic power down feature, controlled by CE, permits the on chip circuitry of each port to enter a very low standby power mode. Military grade product in compliance with MIL-PRF-38535 QML is available.
パラメータ
| 属性 | 値 |
|---|---|
| Core Voltage (V) | 5 |
| Bus Width (bits) | 8 |
| Density (Kb) | 8 |
| Pkg. Code | PNG64 |
| Interface | Async |
| I/O Type | 5.0 V TTL |
| Access Time (ns) | 25 |
| Temp. Range (°C) | 0 to 70°C |
| Architecture | Dual-Port |
| Organization | 1K x 8 |
| Function | Busy, Interrupt, Slave |
パッケージオプション
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) | Pitch (mm) |
|---|---|---|---|
| TQFP | 14.0 x 14.0 x 1.4 | 64 | 0.8 |