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Graphics Interchange Format  |  2008-03-11  |  76.3 KB  |  2304x3300
   ocr: RANDOM ACCESS MEMORY (Continued) 4416 16K: x 4 DYNAMIC RAM ENABLE- 1 18-VSS 1 ENABLE Output Enable (G. DO D1- . 2 3 16 17-D3 ECAS 2,3, 15,17 DO-03 Common Data Input/Output Lines. - WE- 4 15-D2 4 WE Write (Input) Enable. Low Active. RAS 5 14-A0 5 6-8, 10-14 RAS A0-A7 Refresh Address Bus Address. Inputs. Law Active. A6- 6 13-A1 A5- 7 12-A2 9 VDD 5VDC Input. A4- 8 11-A3 16 CAS Column Address Strobe. Low Active. VDD - 9 10-A7 18 VSS Ground. CLOCK GEN RAS NO.1 WRITE CLOCK W GEN CAS- D - CLOCK NO. GEN REF CONTROL CLOCK INTERNAL A1- - AB ADDRESS COUNTER COLUMN DATA DECODER IN BUFF SENSE AMPS vo GATIN ...