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W9864G6JH
9.5
AC Characteristics and Operating Condition
(V DD = 3.3V ± 0.3V for-5/-6, V DD = 2.7V-3.6V for -7/-7S on T A = 0°C~70°C, V DD = 3.3V ± 0.3V for -6I/-6A on T A = -40°C~85°C)
(Notes: 5, 6)
PARAMETER
SYM.
MIN.
-5
MAX.
-6/-6I/-6A
MIN. MAX.
-7/-7S
MIN. MAX.
UNIT NOTES
Ref/Active to Ref/Active Command
Period
t RC
55
60
65
Active to precharge Command Period
t RAS
40
100000
42
100000
45
100000
nS
Active to Read/Write Command Delay
Time
t RCD
15
15
20
Read/Write(a) to Read/Write(b)
Command Period
Precharge to Active Command Period
Active(a) to Active(b) Command Period
t CCD
t RP
t RRD
1
15
10
1
15
12
1
18
14
t CK
nS
Write Recovery Time
CL* = 2
CL* = 3
t WR
2
2
2
2
2
2
t CK
CLK Cycle Time
CL* = 2
CL* = 3
t CK
10
5
1000
1000
7.5
6
1000
1000
10
7
1000
1000
CLK High Level Width
CLK Low Level Width
t CH
t CL
2
2
2
2
2
2
9
9
Access Time from CLK
Output Data Hold Time
CL* = 2
CL* = 3
t AC
t OH
3
-
4.5
3
6
5
3
6
5.5
10
10
10
Output Data High Impedance Time
t HZ
2
5
2
6
2
7
7
Output Data Low Impedance Time
t LZ
0
0
0
10
Power Down Mode Entry Time
t SB
0
5
0
6
0
7
nS
Transition Time of CLK (Rise and Fall)
t T
1
1
1
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
Exit self refresh to ACTIVE command
t DS
t DH
t AS
t AH
t CKS
t CKH
t CMS
t CMH
t REF
t RSC
t XSR
1.5
1
1.5
1
1.5
1
1.5
1
2
70
64
1.5
1
1.5
1
1.5
1
1.5
1
2
72
64
1.5
1
1.5
1
1.5
1
1.5
1
2
75
64
mS
t CK
nS
9
9
9
9
9
9
9
9
*CL = CAS Latency
Publication Release Date: Jun. 25, 2013
- 15 -
Revision A04
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