SanDisk CompactFlash 5000 Manuale Pagina 31

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SanDisk Industrial Grade CompactFlash 5000 Product Manual
© 2007 SanDisk® Corporation 24 July 2007
3) D[15::0] signifies data provided by the card to the host system.
Table 19 contains the read input timing specifications.
Note: SanDisk CompactFlash Memory cards do not assert a -WAIT signal.
Table 19: I/O Read (Input) Timing Specification
Item Symbol IEEE Symbol Min. (ns) Max. (ns)
Data Delay after -IORD td (IORD) tlGLQV 100
Data Hold following -IORD th (IORD) tlGHQX 0
-IORD Width Time tw (IORD) tlGLIGH 165
Address Setup before -IORD tsuA(IORD) tAVIGL 70
Address Hold following -IORD thA(IORD) tlGHAX 20
-CE Setup before -IORD tsuCE(IORD) tELIGL 5
-CE Hold following -IORD thCE(IORD) tlGHEH 20
-REG Setup before -IORD tsuREG(IORD) tRGLIGL 5
-REG Hold following -IORD thREG(IORD) tlGHRGH 0
-INPACK Delay falling from -IORD tdfINPACK(IORD) tlGLIAL 0 45
a
-INPACK Delay rising from -IORD tdrINPACK(IORD) tlGHIAH 45
a
-IOIS16 Delay falling from Address tdfIOIS16(ADR) tAVISL 35
a
-IOIS16 Delay rising from Address tdrIOIS16(ADR) tAVISH 35
a
a The maximum load on -INPACK and -IOIS16 is 1 LSTTL with 50 pF total load.
3.3.9
I/O Write (Output) Timing Specification
Figure 8: I/O Write Timing Diagram
Notes: 1) All timings are measured at the CompactFlash Memory Card.
2) Skews and delays from the host system driver/ receiver to the
CompactFlash Memory Card must be accounted for by the system
design.
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