V437464Q24V
AC Characteristics 3,4
T = 0° to 70°C; V = 0V; V = 3.3V ± 0.3V, t = 1 ns
A
SS
CC
T
Limit Values
-75
-75PC
-10PC
#
Symbol Parameter
Min.
Max.
Min.
Max.
Min.
Max.
Unit
Note
Clock and Clock Enable
1
2
3
tCK
fCK
tAC
Clock Cycle Time
CAS Latency = 3
CAS Latency = 2
7.5
7.5
7.5
10
10
10
ns
ns
System frequency
CAS Latency = 3
CAS Latency = 2
–
–
133
133
–
–
133
100
–
–
100
100
MHz
MHz
Clock Access Time
CAS Latency = 3
CAS Latency = 2
2, 4
–
–
5.4
5.4
–
–
5.4
6
–
–
6
6
ns
ns
4
5
tCH
tCL
Clock High Pulse Width
Clock Low Pulse Width
2.5
2.5
1.5
0.8
2
–
–
–
–
–
–
–
2.5
2.5
1.5
0.8
2
–
–
–
–
–
–
–
3
3
2
1
2
8
1
–
–
–
–
–
–
–
ns
ns
ns
ns
ns
ns
ns
6
6
7
7
8
9
6
tCS
Input Setup time
7
tCH
Input Hold Time
8
tCKSP
tCKSR
tT
CKE Setup Time (Power down mode)
CKE Setup Time (Self Refresh Exit)
Transition time (rise and fall)
9
8
8
10
1
1
Common Parameters
11
12
13
14
15
16
tRCD
tRC
tRAS
tRP
tRRD
tCCD
RAS to CAS delay
15
60
42
15
14
1
–
20
60
45
20
15
1
–
20
70
45
20
16
1
–
ns
ns
6
6
6
6
6
Cycle Time
120K
120K
120K
Active Command Period
Precharge Time
–
–
–
–
–
–
–
–
–
–
–
–
ns
ns
Bank to Bank Delay Time
CAS to CAS delay time (same bank)
ns
CLK
Refresh Cycle
10
64
10
64
10
64
17
18
tSREX
tREF
Self Refresh Exit Time
–
–
–
–
–
–
ns
Refresh Period (8192 cycles)
ms
Read Cycle
19
20
21
22
tOH
tLZ
Data Out Hold Time
3
0
3
2
–
–
3
0
3
2
–
–
3
0
3
2
–
–
9
–
ns
ns
2, 4
10
Data Out to Low Impedance Time
Data Out to High Impedance Time
DQM Data Out Disable Latency
tHZ
7.5
–
7.5
–
ns
tDQZ
CLK
Write Cycle
23
24
tDPL
Data input to Precharge (write recovery)
DQM Write Mask Latency
2
0
–
–
2
0
–
–
1
0
–
–
CLK
CLK
tDQW
11
V437464Q24V Rev. 1.0 January 2002
9
MOSEL [ MOSEL VITELIC, CORP ]
