DATA SHEET MOS INTEGRATED CIRCUIT µPD43256B 256K-BIT CMOS STATIC RAM 32K-WORD BY 8-BIT 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 (L, LL, A, and B versions).
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).
Features • 32,768 words by 8 bits organization • Fast access time: 70, 85, 100, 120, 150 ns (MAX.
) • Wide voltage range (A version: VCC = 3.
0 to 5.
5 V, B version: VCC = 2.
7 to 5.
5 V) • 2 V data retention • OE input for easy application Operating supply voltage V 4.
5 to 5.
5 Operating temperatur...

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