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W24L257 Datasheet(PDF) 1 Page - Winbond |
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W24L257 Datasheet(HTML) 1 Page - Winbond |
1 / 9 page W24L257A 32K × 8 HIGH-SPEED CMOS STATIC RAM Publication Release Date: December 1996 - 1 - Revision A5 GENERAL DESCRIPTION The W24L257A is a high-speed, low-power CMOS static RAM organized as 32768 × 8 bits that operates on a single 3.3-volt power supply. This device is manufactured using Winbond's high performance CMOS technology. FEATURES • High-speed access time: 12/15/20 nS (max.) • Low-power consumption: − Active: 200 mW (typ.) • Single +3.3V power supply • Fully static operation • All inputs and outputs directly TTL compatible • Three-state outputs • Available packages: 28-pin 300 mil SOJ, skinny DIP and standard type one TSOP (8 mm × 13.4 mm) PIN CONFIGURATION 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 28-DIP 28-pin TSOP 28 27 26 25 24 23 22 21 20 19 18 17 16 15 VDD WE A13 A8 A9 A11 OE A10 CS I/O8 I/O7 I/O6 I/O5 I/O4 A14 A12 A7 A6 A5 A4 A3 A2 A1 A0 I/O1 I/O2 I/O3 VSS OE A11 A9 A8 A13 WE VDD A14 A12 A7 A6 A5 A4 A3 A10 CS I/O8 I/O7 I/O6 I/O5 I/O4 I/O3 I/O2 I/O1 A0 A1 A2 VSS BLOCK DIAGRAM A0 . . CS A14 WE I/O1 I/O8 OE ARRAY VDD VSS . . DATA I/O DECODER CONTROL CORE ARRAY PIN DESCRIPTION SYMBOL DESCRIPTION A0 −A14 Address Inputs I/O1 −I/O8 Data Inputs/Outputs CS Chip Select Input WE Write Enable Input OE Output Enable Input VDD Power Supply VSS Ground |
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