GL826 USB 2.0 Multi-Slot Flash Card Reader Controller
Table 4.5－AC Characteristics of Smart Media Interface (CL = 40 pF)
Symbol
tCLS
tCLH
tCS
Parameter
Min.
20
40
20
40
40
20
40
30
20
80
20
100
20
60
80
-
Max.
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
CLE Setup Time
CLE Hold Time
-CE Setup Time
-CE Hold Time
-
-
-
tCH
-
tWP
-WE Pulse Width
ALE Setup Time
ALE Hold Time
Data Setup Time
Data Hold Time
Write Cycle Time
-WE High Hold Time
-WP High to –WE Low
Ready to –RE Low
Read Pulse Width
Read cycle Time
-
tALS
tALH
tDS
-
-
-
tDH
-
tWC
-
tWH
-
tWW
tRR
-
-
tRP
-
tRC
-
tREA
tCEH
tREAID
tRHZ
tCHZ
tREH
tRSTO
tCSTO
tRHW
tWHC
tWHR
tAR1
tCR
-RE Access Time (Serial Data Access)
-CE High Hold Time (At the Last Serial Read)
-RE Access Time (ID Read)
-RE High to Output Hi-Z
45
-
250
-
90
30
30
-
5
-CE High to Output Hi-Z
-
-RE High Hold Time
20
-
-RE Access Time
45
55
-
-CE Access Time
-
-RE High to -WE Low
0
-WE High to –CE Low
50
60
200
200
-
-
-WE High to –RE Low
-
ALE Low to –RE Low (Address Register Read, ID Read)
-CE Low to –RE Low (Data Register Read, ID Read)
-WE High to Busy
-
-
tWB
200
tAR2
tRB
ALE Low to RE Low (Read Cycle)
Last –RE High to Busy (at Sequential Read)
-CE High to Ready
150
-
500
1
tCRY
-
©2000-2007 Genesys Logic Inc. - All rights reserved.
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