W9816G6IH
9.5
AC Characteristics
( V CC = 3.3V ± 0.3V for -5/-6/-6I/-6A, V CC = 2.7V t o 3.6V for -7/-7I, T A = 0 to 70 ° C for -5/-6/-7, T A = -40 to 85 ° C for -6I/-6A/-7I)
PARAMETER
SYM.
MIN.
-5
MAX.
-6/-6I/-6A
MIN. MAX.
MIN.
-7/-7I
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
18
20
Read/Write(a) to Read/Write(b)Command
Period
Precharge to Active(b) Command Period
Active(a) to Active(b) Command Period
t CCD
t RP
t RRD
1
15
10
1
18
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
7
5
1000
1000
8
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
8
8
Access Time from CLK
Output Data Hold Time
CL* = 2
CL* = 3
t AC
t OH
2
4.5
2
5.5
5
2
5.5
5
9
9
9
Output Data High Impedance Time
t HZ
5
2
6
2.5
7
7
Output Data Low Impedance Time
Power Down Mode Entry Time
t LZ
t SB
0
0
5
0
0
6
0
0
7
nS
9
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
0.7
1.5
0.7
1.5
0.7
1.5
0.7
2
70
64
1.5
0.7
1.5
0.7
1.5
0.7
1.5
0.7
2
72
64
1.5
1
1.5
1
1.5
1
1.5
1
2
75
64
mS
t CK
nS
8
8
8
8
8
8
8
8
Publication Release Date: Mar. 22, 2010
- 15 -
Revision A02
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