MSM514400ASJ-70

( DataSheet : www.DataSheet4U.com ) MSM514400ASJ-70 IL22D C-MOS 4 M (1,048,576 x 4)-BIT DRAM —TOP VIEW— 5 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 WE OE RAS CAS DQ4 DQ3 DQ2 DQ1 25 24 2 1 DQ1 I/O 1 DQ2 I/O 2 GND 26 25 DQ4 I/O 24 DQ3 I/O 23 CAS IN 22 OE IN 18 17 16 15 WE IN 3 RAS IN 4 A9 IN 5 14 12 11 10 9 3 22 A0 IN 9 A1 IN 10 A2 IN 11 A3 IN 12 13 VDD 18 A8 IN 17 A7 IN 16 A6 IN 15 A5 IN 14 A4 IN INPUT A0 - A9 4 23 CAS OE RAS WE : : : : : ADDRESS COLUMN ADDRESS STROBE OUTPUT ENABLE ROW ADDRESS STROBE WRITE ENABLE INPUT/OUTPUT DQ1 - DQ4 : DATA RAS 4 CAS 23 COLUMN ADDRESS BUFFERS 5, 9 - 12 14 - 18 A0 - A9 TIMING GENERATOR TIMING GENERATOR COLUMN DECODERS WRITE CLOCK GENERATOR I/O SELECTOR OUTPUT BUFFERS 3 22 WE OE INTERNAL ADDRESS COUNTER ROW ADDRESS BUFFERS REFRESH CONTROL CLOCK SENSE AMPS 1, 2 24, 25 DQ1 DQ4 ROW DECODERS WORD DRIVERS MEMORY CELLS INPUT BUFFERS VDD 13 On-chip VBB GND 26 www.DataSheet4U.com ...