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UPD43256B Datasheet(PDF) 1 Page - NEC |
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UPD43256B Datasheet(HTML) 1 Page - NEC |
1 / 28 page The information in this document is subject to change without notice. Before using this document, please confirm that this is the latest version. Not all products and/or types are available in every country. Please check with an NEC Electronics sales representative for availability and additional information. MOS INTEGRATED CIRCUIT μPD43256B 256K-BIT CMOS STATIC RAM 32K-WORD BY 8-BIT DATA SHEET Document No. M10770EJEV0DS00 (14th edition) Date Published June 2006 NS CP (K) Printed in Japan 1990, 1993, 1994 Description The μPD43256B is a high speed, low power, and 262,144 bits (32,768 words by 8 bits) CMOS static RAM. Battery backup is available. And A and B versions are wide voltage operations. The μPD43256B is packed in 28-pin PLASTIC DIP, 28-pin PLASTIC SOP and 28-pin PLASTIC TSOP (I) (8 x 13.4 mm). Features • 32,768 words by 8 bits organization • Fast access time: 70, 85, 100, 120, 150 ns (MAX.) • Low voltage operation (A version: VCC = 3.0 to 5.5 V, B version: VCC = 2.7 to 5.5 V) • Low VCC data retention: 2.0 V (MIN.) • /OE input for easy application Part number Access time Operating supply Operating ambient Supply current ns (MAX.) voltage temperature At operating At standby At data retention V °C mA (MAX.) μA (MAX.) μA (MAX.) Note1 μPD43256B-xxL 70, 85 4.5 to 5.5 0 to 70 45 50 3 μPD43256B-xxLL 15 2 μPD43256B-Axx 85, 100 Note2, 120 Note2 3.0 to 5.5 μPD43256B-Bxx Note2 100, 120, 150 2.7 to 5.5 Notes 1. TA ≤ 40 °C, VCC = 3.0 V 2. Access time: 85 ns (MAX.) (VCC = 4.5 to 5.5 V) |
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