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SM5903CF Datasheet(PDF) 9 Page - Nippon Precision Circuits Inc |
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SM5903CF Datasheet(HTML) 9 Page - Nippon Precision Circuits Inc |
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9 / 31 page  NIPPON PRECISION CIRCUITS-9 SM5903CF DRAM access timing (with single DRAM) The NWE terminal output is fixed as "High-level" when selecting "READ". DRAM access timing (with 2 DRAMs) The NWE terminal output is fixed as "High-level" when selecting "READ". NCAS terminal output is fixed as "High-level" when selecting "DRAM2". NCAS2 terminal output is fixed as "High-level" when selecting "DRAM1". ,,,,,,,, ,,,,,,,, ,,,,,,,, ,,,,,,,, ,,,,,,,,,,,,,,,,,,,,,,,,, ,,,,,,,,,,,,,,,,,,,,,,,,, ,,,,,,,,,,,,,,,,,,,,,,,,, ,,,,,,,,,,,,,,,,,,,,,,,,, ,,,,,,,,,,,,,, ,,,,,,,,,,,,,, ,,,,,,,,,,,,,, ,,,,,,,,,,,,,, ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, ,,,,,,,,,,, ,,,,,,,,,,, ,,,,,,,,,,, ,,,,,,,,,,, ,,,,,,, ,,,,,,, ,,,,,,, ,,,,,,, NCAS A0 to A10 D0 to D3 (WRITE) NRAS D0 to D3 (READ) NWE (WRITE) 3 WCS t 6 CRDH t CRDS t CWDH t CWDS t 33 5 CADH t CADS t RADH t RADS t 11 1 5 3 2 tRCD tCASL CASH t RASH t 3 tCY 5 RASL t tCY tCY tCY tCY tCY tCY tCY tCY tCY tCY tCY tCY WEL t ,,,,,,,,,,,,,,,,,,,,,,,, ,,,,,,,,,,,,,,,,,,,,,,,, ,,,,,,,,,,,,,,,,,,,,,,,, ,,,,,,,,,,,,,,,,,,,,,,,, ,,,,,,,,,,,,,,,,,,,,,,,, ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, ,,,,,,,,,,, ,,,,,,,,,,, ,,,,,,,,,,, ,,,,,,,,,,, ,,,,,,,,,,, ,,,,,,, ,,,,,,, ,,,,,,, ,,,,,,, ,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, ,,,,,,,,, NCAS (DRAM1 SELECT) A0 to A9 NRAS D0 to D3 (READ) NCAS2 (DRAM2 SELECT) ,,,,,,,,,,,,,, ,,,,,,,,,,,,,, ,,,,,,,,,,,,,, ,,,,,,,,,,,,,, ,,,,,,,,,,,,,, D0 to D3 (WRITE) NWE (WRITE) 5 3 25 3 1 1 1 3 3 5 25 3 3 RASH t RASL t RCD ttCASL CASH t CASH t tCASL RDC t tRADS RADH t CADS t CADH t CWDH t CWDS t CRDS t CRDH t WCS t tCY tCY tCY tCY tCY tCY tCY tCY tCY tCY tCY tCY tCY tCY tCY WEL t 6 tCY WCS t |
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