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SMC032AF 数据表(PDF) 25 Page - Numonyx B.V |
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SMC032AF 数据表(HTML) 25 Page - Numonyx B.V |
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25 / 82 page ![]() SMCxxxAF Command interface 25/82 Figure 5. Common memory Write timing diagram 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 250 ns Symbol IEEE symbol Parameter Min Max Unit tsu(D-WEH) tDVWH Data setup time from WE 80 ns th(D) tWMDX Data hold time 30 ns tw(WE) tWLWH WE pulse width 150 ns tsu(A) tAVGL Address setup time 30 ns tsu(CE) tELWL CE setup time before WE 0 ns trec(WE) tWMAX Write recovery time 30 ns th(A) tGHAX Address hold time 20 ns th(CE) tGHEH CE hold following WE 20 ns 1. ST CF does not assert the WAIT signal. |
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