A-Data
ADS4616A4A
AC Characteristics
-5
-6
-7
Parameter
Symbol
Unit Note
Min Max Min Max Min Max
System clock /CAS Latency = 3 tCK3
Cycle time
5
7
6
8
2
2
-
7
10
2
1000
1000
1000 ns
/CAS Latency = 2 tCK2
Clock high pulse width
Clock low pulse width
tCHW
tCLW
2
-
-
-
-
-
ns
ns
1
1
2
-
2
Access time /CAS Latency = 3 tAC3
-
4.5
4.5
5
-
5
ns
2
form clock
/CAS Latency = 2 tAC2
tRC
-
-
5.5
-
-
5.5
-
54
60
65
Row cycle time
-
-
ns
ns
/RAS to /CAS delay
/RAS active time
tRCD
tRAS
tRP
14
18
-
20
-
40 100K 42 100K 45 100K ns
/RAS precharge time
/RAS to /RAS bank active delay
/CAS to /CAS delay
Data – out hold time
Data – input setup time
Data – input hold time
Address setup time
Address hold time
14
10
1
-
-
18
12
1
-
-
20
14
1
-
-
-
-
-
-
-
-
-
ns
ns
tRRD
tCCD
tOH
-
-
CLK
ns
1.5
1.5
1
-
2
-
2.5
1.5
1
tDS
-
1.5
1
-
ns
1
1
1
1
tDH
-
-
ns
tAS
1.5
1
-
1.5
1
-
1.5
1
ns
tAH
-
-
ns
Power down exit time
Refresh time
tPDE
tREF
5
-
5
-
5
CLK
64
64
64 ms
Note : 1. Assume tR / tF (input rise and fall time) is 1 ns.
2. Access times to be measured with input signals of 1v / ns edge rate.
3.A new command can be given tRRC after self refresh exit.
Rev 1 December, 2001
6
ADATA [ ADATA Technology Co., Ltd. ]
