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參數(shù)資料
Rev. 0.2/Jun 02 7
HY5V52CF
AC CHARACTERISTICS
I
(AC operating conditions unless otherwise noted)
Note :
1.Assume tR / tF (input rise and fall time ) is 1ns
2.Access times to be measured with input signals of 1v/ns edge rate, 0.8v to 2.0v
3.
Data-out hold time to be measured under 30pF load condition, without Vt termination
Parameter
Symbol
-8
-P
-S
Unit Note
Min
Max
Min
Max
Min
Max
System clock
cycle time
CAS Latency = 3
tCK3
8
1000
10
1000
10
1000
ns
CAS Latency = 2
tCK2
-10
10
12
ns
Clock high pulse width
tCHW
3
-
3
-
3
-
ns
1
Clock low pulse width
tCLW
3
-
3
-
3
-
ns
1
Access time from
clock
CAS Latency = 3
tAC3
-
6
-
6
-
6
ns
2
CAS Latency = 2
tAC2
-
6
-
6
-
6
ns
Data-out hold time
tOH
2
-
2
-
2
-
ns
3
Data-Input setup time
tDS
2
-
2
-
2
-
ns
1
Data-Input hold time
tDH
1
-
1
-
1
-
ns
1
Address setup time
tAS
2
-
2
-
2
-
ns
1
Address hold time
tAH
1
-
1
-
1
-
ns
1
CKE setup time
tCKS
2
-
2
-
2
-
ns
1
CKE hold time
tCKH
1
-
1
-
1
-
ns
1
Command setup time
tCS
2
-
2
-
2
-
ns
1
Command hold time
tCH
1
-
1
-
1
-
ns
1
CLK to data output in low Z-time
tOLZ
1
-
1
-
1
-
ns
CLK to data output
in high Z-time
CAS Latency = 3
tOHZ3
-
6
-
6
-
6
ns
CAS Latency = 2
tOHZ2
-
6
-
6
-
6
ns
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