(China (Mainland))
Product Summary
The UPD43256B 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 UPD43256B is packed in 28-pin plastic DIP, 28-pin plastic SOP and 28-pin plastic TSOP (I).
Parametrics
Absolute Maximum Ratings:
(1)Supply voltage: -0.5(Note) to +7.0 V;
(2)Input/Output voltage:-0.5(Note) to VCC + 0.5 V;
(3)Operating ambient temperature: 0 to 70℃;
(4)Storage temperature:-55℃ to +125℃
Note :-3.0 V (MIN.) (Pulse width 50 ns)
Features
(1)32,768 words by 8 bits organization; (2)Fast access time: 70, 85, 100, 120, 150 ns (MAX.); (3)Wide voltage range (A version: VCC = 3.0 to 5.5 V, B version: VCC = 2.7 to 5.5 V); (4)2 V data retention; (5)OE input for easy application
Diagrams
<IMG border=0 src="http://www.seekic.com/uploadfile/ic-mfg/201272331623252.jpg">
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