CM120 C-Media Electronics, Inc., CM120 Datasheet - Page 34
CM120
Manufacturer Part Number
CM120
Description
Usb 7-in-1 Combo Card Reader Controller
Manufacturer
C-Media Electronics, Inc.
Datasheet
1.CM120.pdf
(38 pages)
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Date: 09/09/2003
Note): The length of the period between -CE High and Ready depends on the
pull-up resistance at the Ready/-Busy terminal.
Symbol
t
t
t
t
t
t
t
t
REAID
t
t
t
t
t
t
t
RSTO
CSTO
t
t
t
t
t
t
RHW
WHC
WHR
t
t
t
REA
CEH
RHZ
CHZ
REH
CRY
WW
t
AR1
AR2
WC
WH
WB
DH
RR
RP
RC
CR
RB
IR
Data Hold Time
Write Cycle Time
-WE High Hold Time
-WE High to -WE Low
Ready to -RE Low
Read Pulse Width
Read Cycle Time
-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
-CE High to Output Hi-Z
-RE High Hold Time
Output Hi-Z to -RE Low
-RE Access Time(Status Read)
-CE Access Time(Status Read)
-RE High to -WE Low
-WE High to -CE Low
-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
ALE Low to -RE Low(Read Cycle)
Last -RE High to Busy(at Sequential Read)
-CE High to Ready
Parameter
(Note)
- 33 -
USB 7-in-1 Combo Card Reader Controller
Min.
100
250
200
200
150
20
80
20
20
60
80
20
50
60
5
0
0
-
-
-
-
-
-
-
-
Max.
200
200
45
90
30
30
45
55
1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Version: 1.3
Unit
CM120
μs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns