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 36 bits or more using the 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 128-pin TQFP, 208-ball fpBGA, and 256-ball BGA
- Industrial temperature range (–40 °C to +85 °C) is available
70V631 - Block Diagram
Description
The 70V631 is a high-speed 256K x 18 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 36-bit or more word systems. Using the Master/Slave dual-port RAM approach in 36-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) permits 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) | 18 |
| Density (Kb) | 4608 |
| Pkg. Code | BFG208, PKG128 |
| Interface | Async |
| I/O Type | 3.3 V LVTTL |
| Access Time (ns) | 12 |
| Temp. Range (°C) | -40 to 85°C |
| Architecture | Dual-Port |
| Organization | 256K x 18 |
| Function | Busy, Interrupt, JTAG, Master, Slave |
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 70V631S12BFGI | Active | Available | Out of Stock | CABGA | 1ku | $127.01 | 208# | I | Yes | Tray | 3 | PHILIPPINES | TAIWAN, USA |
| 70V631S12PRFGI | Active | Available | In Stock | TQFP | 1ku | $133.4 | 128# | I | Yes | Tray | 3 | TAIWAN | TAIWAN, USA |
| 70V631S10BC | Obsolete | N/A | Out of Stock | CABGA | 256# | C | No | Tray | 4 | |||
| 70V631S10BC8 | Obsolete | N/A | Out of Stock | CABGA | 256# | C | No | Reel | 4 | |||
| 70V631S10BCG | Obsolete | N/A | Out of Stock | CABGA | 256# | C | Yes | Tray | 3 | |||
| 70V631S10BCG8 | Obsolete | N/A | Out of Stock | CABGA | 256# | C | Yes | Reel | 3 | |||
| 70V631S10BF | Obsolete | N/A | Out of Stock | CABGA | 208# | C | No | Tray | 3 | |||
| 70V631S10BF8 | Obsolete | N/A | Out of Stock | CABGA | 208# | C | No | Reel | 3 | |||
| 70V631S10BFG | Obsolete | N/A | Out of Stock | CABGA | 208# | C | Yes | Tray | 3 | |||
| 70V631S10BFG8 | Obsolete | N/A | Out of Stock | CABGA | 208# | C | Yes | Reel | 3 | |||
| 70V631S10PRF | Obsolete | N/A | Out of Stock | TQFP | 128# | C | No | Tray | 3 | |||
| 70V631S10PRF8 | Obsolete | N/A | Out of Stock | TQFP | 128# | C | No | Reel | 3 | |||
| 70V631S10PRFG | Obsolete | N/A | Out of Stock | TQFP | 128# | C | Yes | Tray | 3 | |||
| 70V631S12BC | Obsolete | N/A | Out of Stock | CABGA | 256# | C | No | Tray | 4 | |||
| 70V631S12BC8 | Obsolete | N/A | Out of Stock | CABGA | 256# | C | No | Reel | 4 | |||
| 70V631S12BCI | Obsolete | N/A | Out of Stock | CABGA | 256# | I | No | Tray | 4 | |||
| 70V631S12BCI8 | Obsolete | N/A | Out of Stock | CABGA | 256# | I | No | Reel | 4 | |||
| 70V631S12BF | Obsolete | N/A | Out of Stock | CABGA | 208# | C | No | Tray | 3 | |||
| 70V631S12BF8 | Obsolete | N/A | Out of Stock | CABGA | 208# | C | No | Reel | 3 | |||
| 70V631S12BFGI8 | Obsolete | N/A | Out of Stock | CABGA | 208# | I | Yes | Reel | 3 | |||
| 70V631S12BFI | Obsolete | N/A | Out of Stock | CABGA | 208# | I | No | Tray | 3 | |||
| 70V631S12BFI8 | Obsolete | N/A | Out of Stock | CABGA | 208# | I | No | Reel | 3 | |||
| 70V631S12PRF | Obsolete | N/A | Out of Stock | TQFP | 128# | C | No | Tray | 3 | |||
| 70V631S12PRF8 | Obsolete | N/A | Out of Stock | TQFP | 128# | C | No | Reel | 3 | |||
| 70V631S12PRFI | Obsolete | N/A | Out of Stock | TQFP | 128# | I | No | Tray | 3 | |||
| 70V631S12PRFI8 | Obsolete | N/A | Out of Stock | TQFP | 128# | I | No | Reel | 3 | |||
| 70V631S15BC | Obsolete | N/A | Out of Stock | CABGA | 256# | C | No | Tray | 4 | |||
| 70V631S15BC8 | Obsolete | N/A | Out of Stock | CABGA | 256# | C | No | Reel | 4 | |||
| 70V631S15BF | Obsolete | N/A | Out of Stock | CABGA | 208# | C | No | Tray | 3 | |||
| 70V631S15BF8 | Obsolete | N/A | Out of Stock | CABGA | 208# | C | No | Reel | 3 | |||
| 70V631S15PRF | Obsolete | N/A | Out of Stock | TQFP | 128# | C | No | Tray | 3 | |||
| 70V631S15PRF8 | Obsolete | N/A | Out of Stock | TQFP | 128# | C | No | Reel | 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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