Features
- High-performance system speed 166MHz (3.5ns Clock-to-Data access)
- ZBT feature - No dead cycles between write and read cycles
- Internally synchronized output buffer enable eliminates the need to control OE
- Single R/W (Read/Write) control pin
- Positive clock-edge triggered address, data, and control signal registers for fully pipelined applications
- 4-word burst capability (interleaved or linear)
- Individual byte write (BW1 - BW4) control (May tie active)
- Three chip enables for simple depth expansion
- 3.3V power supply (±5%), 2.5V I/O supply (VDDQ)
- Optional - Boundary Scan JTAG interface (IEEE 1149.1 complaint)
- Available in 100-pin TQFP and 119-pin BGA packages
71V2556 - Block Diagram
Description
The 71V2556 3.3V CMOS synchronous SRAM, organized as 128K x 36, is designed to eliminate dead bus cycles when turning the bus around between reads and writes or writes and reads. Thus, it has been given the name ZBT™, or Zero Bus Turnaround. The 71V2556 contains data I/O, address, and control signal registers. It can provide four cycles of data for a single address presented to the SRAM.
| Part Number | Status | Samples | Stock | Package | Lead Count (#) | Temp. Grade | Pb (Lead) Free | Carrier Type | Moisture Sensitivity Level (MSL) |
|---|---|---|---|---|---|---|---|---|---|
| 71V2556S100PFG | Obsolete | N/A | In Stock | TQFP | 100# | C | Yes | Tray | 3 |
| 71V2556S100PFG8 | Obsolete | N/A | Out of Stock | TQFP | 100# | C | Yes | Reel | 3 |
| 71V2556S100PFGI | Obsolete | N/A | Out of Stock | TQFP | 100# | I | Yes | Tray | 3 |
| 71V2556S100PFGI8 | Obsolete | N/A | Out of Stock | TQFP | 100# | I | Yes | Reel | 3 |
| 71V2556S133PFG | Obsolete | N/A | Out of Stock | TQFP | 100# | C | Yes | Tray | 3 |
| 71V2556S133PFG8 | Obsolete | N/A | Out of Stock | TQFP | 100# | C | Yes | Reel | 3 |
| 71V2556S133PFGI | Obsolete | N/A | In Stock | TQFP | 100# | I | Yes | Tray | 3 |
| 71V2556S133PFGI8 | Obsolete | N/A | Out of Stock | TQFP | 100# | I | Yes | Reel | 3 |
| 71V2556S150PFG | Obsolete | N/A | In Stock | TQFP | 100# | C | Yes | Tray | 3 |
| 71V2556S150PFG8 | Obsolete | N/A | Out of Stock | TQFP | 100# | C | Yes | Reel | 3 |
| 71V2556S150PFGI | Obsolete | N/A | In Stock | TQFP | 100# | I | Yes | Tray | 3 |
| 71V2556S150PFGI8 | Obsolete | N/A | Out of Stock | TQFP | 100# | I | Yes | Reel | 3 |
| 71V2556S166PFG | Obsolete | N/A | In Stock | TQFP | 100# | C | Yes | Tray | 3 |
| 71V2556S166PFG8 | Obsolete | N/A | Out of Stock | TQFP | 100# | C | Yes | Reel | 3 |
| 71V2556S166PFGI | Obsolete | N/A | In Stock | TQFP | 100# | I | Yes | Tray | 3 |
| 71V2556S166PFGI8 | Obsolete | N/A | Out of Stock | TQFP | 100# | I | Yes | Reel | 3 |
| 71V2556SA100BG | Obsolete | N/A | Out of Stock | PBGA | 119# | C | No | Tray | 3 |
| 71V2556SA100BG8 | Obsolete | N/A | Out of Stock | PBGA | 119# | C | No | Reel | 3 |
| 71V2556SA100BGG | Obsolete | N/A | Out of Stock | PBGA | 119# | C | Yes | Tray | 3 |
| 71V2556SA100BGG8 | Obsolete | N/A | Out of Stock | PBGA | 119# | C | Yes | Reel | 3 |
| 71V2556SA100BGGI | Obsolete | N/A | Out of Stock | PBGA | 119# | I | Yes | Tray | 3 |
| 71V2556SA100BGGI8 | Obsolete | N/A | Out of Stock | PBGA | 119# | I | Yes | Reel | 3 |
| 71V2556SA100BGI | Obsolete | N/A | Out of Stock | PBGA | 119# | I | No | Tray | 3 |
| 71V2556SA100BGI8 | Obsolete | N/A | Out of Stock | PBGA | 119# | I | No | Reel | 3 |
| 71V2556SA133BG | Obsolete | N/A | Out of Stock | PBGA | 119# | C | No | Tray | 3 |
| 71V2556SA133BG8 | Obsolete | N/A | Out of Stock | PBGA | 119# | C | No | Reel | 3 |
| 71V2556SA133BGI | Obsolete | N/A | In Stock | PBGA | 119# | I | No | Tray | 3 |
| 71V2556SA133BGI8 | Obsolete | N/A | Out of Stock | PBGA | 119# | I | No | Reel | 3 |
| 71V2556SA166BG | Obsolete | N/A | Out of Stock | PBGA | 119# | C | No | Tray | 3 |
| 71V2556SA166BG8 | Obsolete | N/A | Out of Stock | PBGA | 119# | C | No | Reel | 3 |
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- End Of Life NoticePDF 1.1 MB Jun 03, 2025
- Product Change NoticePDF 4.55 MB Feb 22, 2022
- Product Change NoticePDF 24 KB 7WDXRDKU4E7E-5-41812 Nov 14, 2012
- Product Change NoticePDF 135 KB 7WDXRDKU4E7E-5-41713 Jul 26, 2007
- Product Change NoticePDF 164 KB 7WDXRDKU4E7E-5-41811 May 11, 2006
- Product Change NoticePDF 290 KB 7WDXRDKU4E7E-5-41712 Jul 19, 2005
- Product Change NoticePDF 80 KB 7WDXRDKU4E7E-5-41813 Dec 14, 2004
- Product Change NoticePDF 38 KB 7WDXRDKU4E7E-5-41776 Dec 09, 2004
- Product Change NoticePDF 211 KB 7WDXRDKU4E7E-5-41711 Oct 16, 2003
- Product Change NoticePDF 197 KB 7WDXRDKU4E7E-5-41701 Jun 04, 2003
- Product Change NoticePDF 150 KB 7WDXRDKU4E7E-5-41738 Mar 20, 2003
- Product Change NoticePDF 65 KB 7WDXRDKU4E7E-5-41737 Mar 20, 2003
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- Application NotePDF 141 KB 7WDXRDKU4E7E-5-39073 Aug 02, 1998
- Application NotePDF 80 KB 7WDXRDKU4E7E-5-39072 Jul 02, 1998
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