SRAM AS5C2568 Austin Semiconductor, Inc. 32K x 8 SRAM PIN ASSIGNMENT (Top View) SRAM MEMORY ARRAY 28-PIN PSOJ (DJ) FEATURES • • • • • • • • • Access Times: 12, 15, & 20ns Fast output enable (tDOE) for cache applications Low active power: 400 mW (TYP) Low power standby Fully static operation, no clock or refresh required High-performance, low-power CMOS double-metal process Single +5V (+10%) Power Supply Easy memory expansion with CE\ All inputs and outputs are TTL compatible OPTIONS A14 A12 A7 A6 A5 A4 A3 A2 A1 A0 I/O0 I/O1 I/O2 GND MARKING • Timing 12ns access* 15ns access 20ns access -12 -15 -20 • Package(s)** Plastic SOJ DJ • Operating Temperature Ranges Military -55oC to +125oC Industrial -40oC to +85oC 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 VCC 27 WE\ 26 A13 25 A8 24 A9 23 A11 22 OE\ 21 A10 20 CE\ 19 I/O7 18 I/O6 17 I/O5 16 I/O4 15 I/O3 XT IT No. 906 GENERAL DESCRIPTION * -12 available in IT only. ** For ceramic version of this product, see the MT5C2568 data sheet. The Austin Semiconductor SRAM family employs high-speed, low power CMOS designs using a four-transistor memory cell. These SRAMs are fabricated using double-layer metal, double-layer polysilicon technology. For flexibility in high-speed memory applications, Austin Semiconductor offers chip enable (CE\) and output enable (OE\) capability. These enhancements can place the outputs in High-Z for additional flexibility in system design. Writing to these devices is accomplished when write enable (WE\) and CE\ inputs are both LOW. Reading is accomplished when WE\ remains HIGH and CE\ and OE\ go LOW. The device offers a reduced power standby mode when disabled. This allows system designs to achieve low standby power requirements. All devices operate from a single +5V power supply and all inputs and outputs are fully TTL compatible. For more products and information please visit our web site at www.austinsemiconductor.com AS5C2568 Rev. 2.6 06/05 Austin Semiconductor, Inc. reserves the right to change products or specifications without notice. 1



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