Features
- Dual-Port allows simultaneous access of the same memory location
- Dual chip enables allow for depth expansion without external logic
- Easily expands data bus width to 72 bits or more using the Master/Slave select when cascading more than one device
- Busy and Interrupt Flags
- On-chip port arbitration logic
- Full on-chip hardware support of semaphore signaling between ports Fully asynchronous operation from either port
- Separate byte controls for multiplexed bus and bus matching compatibility
- Includes JTAG functionality on BGA package versions only
- LVTTL-compatible, single 3.3V (±150mV) power supply for core
- LVTTL-compatible, selectable 3.3V (±150mV)/2.5V (±100mV) power supply for I/Os and control signals on each port
- Available in a 208-pin PQFP, 208-ball fpBGA and 256-ball BGA
- Industrial temperature range (–40C to +85C) is available
70V657 - Block Diagram
Description
The 70V657 is a high-speed 32K x 36 Asynchronous Dual-Port Static RAM designed to be used as a stand-alone Dual-Port RAM or as a combination MASTER/ SLAVE Dual-Port RAM for 72-bit-or-more word system. Using the IDT MASTER/SLAVE Dual-Port RAM approach in 72-bit or wider memory system applications results in full-speed, error-free operation without the need for additional discrete logic. An automatic power down feature controlled by the chip enables (either CE0 or CE1) permit the on-chip circuitry of each port to enter a very low standby power mode.
Parameters
| Attributes | Value |
|---|---|
| Core Voltage (V) | 3.3 |
| Bus Width (bits) | 36 |
| Density (Kb) | 1152 |
| Pkg. Code | BC256, BCG256, BF208, BFG208 |
| Interface | Async |
| I/O Type | 3.3 V LVTTL |
| Access Time (ns) | 10, 12 |
| Temp. Range (°C) | -40 to 85°C, 0 to 70°C |
| Architecture | Dual-Port |
| Organization | 32K x 36 |
| Function | Interrupt |
| Part Number | Status | Samples | Stock | Package | Budgetary Price (USD) | Lead Count (#) | Temp. Grade | Pb (Lead) Free | Carrier Type | Moisture Sensitivity Level (MSL) | Country of Assembly | Country of Wafer Fabrication |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 70V657S10BFG | Active | Available | In Stock | CABGA | 1ku | $71.78 | 208# | C | Yes | Tray | 3 | PHILIPPINES | TAIWAN, USA |
| 70V657S12BCGI | Active | Available | Out of Stock | CABGA | 1ku | $75.16 | 256# | I | Yes | Tray | 3 | PHILIPPINES | TAIWAN, USA |
| 70V657S12BCI | Active | Available | Out of Stock | CABGA | 1ku | $75.16 | 256# | I | No | Tray | 4 | PHILIPPINES | TAIWAN, USA |
| 70V657S12BFI | Active | Available | Out of Stock | CABGA | 1ku | $75.16 | 208# | I | No | Tray | 3 | PHILIPPINES | TAIWAN, USA |
| 70V657S10BC | Obsolete | N/A | Out of Stock | CABGA | 256# | C | No | Tray | 4 | |||
| 70V657S10BC8 | Obsolete | N/A | Out of Stock | CABGA | 256# | C | No | Reel | 4 | |||
| 70V657S10BCG | Obsolete | N/A | In Stock | CABGA | 256# | C | Yes | Tray | 3 | |||
| 70V657S10BF | Obsolete | N/A | Out of Stock | CABGA | 208# | C | No | Tray | 3 | |||
| 70V657S10BF8 | Obsolete | N/A | Out of Stock | CABGA | 208# | C | No | Reel | 3 | |||
| 70V657S10BFG8 | Obsolete | N/A | Out of Stock | CABGA | 208# | C | Yes | Reel | 3 | |||
| 70V657S10DR | Obsolete | N/A | Out of Stock | PQFP | 208# | C | No | Tray | 3 | |||
| 70V657S10DRG | Obsolete | N/A | Out of Stock | PQFP | 208# | C | Yes | Tray | 3 | |||
| 70V657S10DRG8 | Obsolete | N/A | Out of Stock | PQFP | 208# | C | Yes | Reel | 3 | |||
| 70V657S12BC | Obsolete | N/A | Out of Stock | CABGA | 256# | C | No | Tray | 4 | |||
| 70V657S12BC8 | Obsolete | N/A | Out of Stock | CABGA | 256# | C | No | Reel | 4 | |||
| 70V657S12BCGI8 | Obsolete | N/A | Out of Stock | CABGA | 256# | I | Yes | Reel | 3 | |||
| 70V657S12BCI8 | Obsolete | N/A | Out of Stock | CABGA | 256# | I | No | Reel | 4 | |||
| 70V657S12BF | Obsolete | N/A | Out of Stock | CABGA | 208# | C | No | Tray | 3 | |||
| 70V657S12BF8 | Obsolete | N/A | Out of Stock | CABGA | 208# | C | No | Reel | 3 | |||
| 70V657S12BFGI | Obsolete | N/A | Out of Stock | CABGA | 208# | I | Yes | Tray | 3 | |||
| 70V657S12BFGI8 | Obsolete | N/A | Out of Stock | CABGA | 208# | I | Yes | Reel | 3 | |||
| 70V657S12BFI8 | Obsolete | N/A | Out of Stock | CABGA | 208# | I | No | Reel | 3 | |||
| 70V657S12DR | Obsolete | N/A | Out of Stock | PQFP | 208# | C | No | Tray | 3 | |||
| 70V657S12DRGI | Obsolete | N/A | In Stock | PQFP | 208# | I | Yes | Tray | 3 | |||
| 70V657S12DRGI8 | Obsolete | N/A | Out of Stock | PQFP | 208# | I | Yes | Reel | 3 | |||
| 70V657S12DRI | Obsolete | N/A | Out of Stock | PQFP | 208# | I | No | Tray | 3 | |||
| 70V657S15BC | Obsolete | N/A | Out of Stock | CABGA | 256# | C | No | Tray | 4 | |||
| 70V657S15BC8 | Obsolete | N/A | Out of Stock | CABGA | 256# | C | No | Reel | 4 | |||
| 70V657S15BF | Obsolete | N/A | Out of Stock | CABGA | 208# | C | No | Tray | 3 | |||
| 70V657S15BF8 | Obsolete | N/A | Out of Stock | CABGA | 208# | C | No | Reel | 3 | |||
| 70V657S15DR | Obsolete | N/A | Out of Stock | PQFP | 208# | C | No | Tray | 3 |
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- Product Change NoticePDF 24 KB 7WDXRDKU4E7E-5-41812 Nov 14, 2012
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- Application NotePDF 197 KB 7WDXRDKU4E7E-5-37103 Jun 01, 2006
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- Product Change NoticePDF 16 KB 7WDXRDKU4E7E-5-41680 Aug 12, 2005
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- Application NotePDF 197 KB 7WDXRDKU4E7E-5-37103 Jun 01, 2006
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