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SMCXXXBF Datasheet(PDF) 27 Page - STMicroelectronics |
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SMCXXXBF Datasheet(HTML) 27 Page - STMicroelectronics |
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27 / 91 page  SMCxxxBF Command Interface 27/91 Figure 5. Common Memory Write waveforms 1. DIN signifies data provided by the system to the CompactFlash Memory Card. AI10082b tsu(D-WEH) DATA IN VALID Address Inputs D0 to D15 (DIN) VALID –REG –CE2/–CE1 –WE tsu(CE) trec(WE) th(CE) th(D) tsu(A) tw(WE) th(A) Table 19. Common Memory Write timing(1) Cycle Time Mode 250ns 120ns 100ns 80ns Unit Symbol IEEE Symbol Parameter Min Max Min Max Min Max Min Max tsu(D-WEH) tDVWH Data Setup Time from WE 80 50 40 30 ns th(D) tWMDX Data Hold Time 30 15 10 10 ns tw(WE) tWLWH WE Pulse Width 150 70 60 55 ns tsu(A) tAVGL Address Setup Time 30 15 10 10 ns tsu(CE) tELWL CE Setup Time before WE 0 0 0 0 ns trec(WE) tWMAX Write Recovery Time 30 15 15 15 ns th(A) tGHAX Address Hold Time 20 15 15 10 ns th(CE) tGHEH CE Hold following WE 20 15 15 10 ns 1. ST CF does not assert the WAIT signal. |
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