
W986432DH
Publication Release Date: May 2000
- 7 -
Revision A0
AC CHARACTERISTICS
(V
CC
= 3.3V
±
0.3V, V
SS
= 0V, Ta = 0 to 70
°
C) (Notes: 5, 6.)
PARAMETER
Symbol
-5
-55
-6
UNIT NOTE
ns
Cycle
MIN
54
40
14
1
MAX
100000
MIN
55
40
15
1
MAX
100000
MIN
60
42
18
1
MAX
100000
Ref/Active to Ref/Active Command Period tRC
Active to precharge Command Period
Active to Read/Write Command Delay Time tRCD
Read/Write(a) to Read/Write(b)Command
Period
Precharge to Active(b) Command Period
Active(a) to Active(b) Command Period
Write Recovery Time
CLK Cycle Time
tRAS
tCCD
tRP
tRRD
tWR
tCK
tCH
tCL
14
10
7
5
7
5
2
2
2.75
2.75
0
0
0.5
1
0.5
1.3
0.8
1.3
0.8
1
0.5
10
15
10.8
7.5
5.4
7.5
5.4
2
2
2.75
2.75
0
0
0.5
1.5
0.5
1.5
1
1.5
1
1.5
0.5
10.8
18
12
7.5
6
7.5
6
2
2
2.75
2.75
0
0
0.5
1.5
0.5
1.5
0.5
1.5
0.5
1.5
0.5
12
ns
ms
ns
CL* = 2
CL* = 3
CL* = 2
CL* = 3
1000
1000
4.5
4.5
5
5
10
64
1000
1000
5.5
5
5.4
5.4
10
64
1000
1000
5.5
5
6
6
10
64
CLK High Level
CLK Low Level
Access Time from CLK
Output Data Hold Time
Output Data High Impedance Time
Output Data Low Impedance Time
Power Down Mode Entry Time
Transition Time of CLK (Rise and Fall)
Data-in-Set-up Time
Data-in Hold Time
Address Set-up Time
Address Hold Time
CKE Set-up Time
CKE Hold Time
Command Set-up Time
Command Hold Time
Refresh Time
Mode Register Set Cycle Time
CL* = 2
tAC
CL* = 3
tOH
tHZ
tLZ
tSB
tT
tDS
tDH
tAS
tAH
tCKS
tCKH
tCMS
tCMH
tREF
tRSC