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UPD4482161GF-A85 Datasheet(PDF) 8 Page - NEC |
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UPD4482161GF-A85 Datasheet(HTML) 8 Page - NEC |
8 / 28 page 8 µPD4482161, 4482181, 4482321, 4482361 Data Sheet M14521EJ3V0DS Block Diagrams [ µµµµPD4482161, µµµµPD4482181] Address register Binary counter and logic CLR Q0 Q1 Byte 1 Write register Byte 1 Write driver 8/9 Byte 2 Write register Byte 2 Write driver 8/9 Enable register Row and column Input register Output buffer 19 19 17 19 A0, A1 A1’ A0’ 2 16/18 A0 to A18 MODE /ADV CLK /AC /AP /BW1 /BW2 /BWE /GW /CE CE2 /CE2 /G I/O1 to I/O16 I/OP1 to I/OP2 ZZ Power down control 16/18 16/18 Memory cell array 1,024 rows 512 × 16 columns (8,388,608 bits) 512 × 18 columns (9,437,184 bits) decoders Burst Sequence [ µµµµPD4482161, µµµµPD4482181] Interleaved Burst Sequence Table (MODE = VDD) External Address A18 to A2, A1, A0 1st Burst Address A18 to A2, A1, /A0 2nd Burst Address A18 to A2, /A1, A0 3rd Burst Address A18 to A2, /A1, /A0 Linear Burst Sequence Table (MODE = VSS) External Address A18 to A2, 0, 0 A18 to A2, 0, 1 A18 to A2, 1, 0 A18 to A2, 1, 1 1st Burst Address A18 to A2, 0, 1 A18 to A2, 1, 0 A18 to A2, 1, 1 A18 to A2, 0, 0 2nd Burst Address A18 to A2, 1, 0 A18 to A2, 1, 1 A18 to A2, 0, 0 A18 to A2, 0, 1 3rd Burst Address A18 to A2, 1, 1 A18 to A2, 0, 0 A18 to A2, 0, 1 A18 to A2, 1, 0 |
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