
Rev. 1.1/Dec.99                                                      
10
GMM27333230ATG
Relationship Between Frequency and Minimum Latency
Notes
l
RCD
1
Active command to column 
command (same bank)
Active command to active
command (same bank)
Active command to Precharge 
command (same bank)
Precharge command to active
command (same bank)
Write recovery or last data-in to
Precharge command 
(same bank)
Active command to active 
command (different bank)
Self refresh exit time
Last data in to active command 
(Auto Precharge, same bank)
Self refresh exit to command
input
Precharge 
command to 
high impedance
Last data out to active 
command 
(auto Precharge) (same bank)
Last data out to
Precharge
(early Precharge)
Column command to column 
command
Write command to data in 
latency
DQM to data in
l
RC
= [
l
RAS
+
l
RP
], 1
l
RAS
l
RP
1
l
RWL
1
l
RRD
1
l
SREX
l
APW
= [
l
RWL
+
l
RP
], 1
= [
l
RC
]
l
SEC
l
HZP
l
HZP
(CL=2)
(CL=3)
l
APR
l
EP
l
EP
(CL=2)
(CL=3)
l
CCD
l
WCD
l
DID
l
DOD
l
CLE
l
RSA
l
CDD
DQM to data out
l
PEC
Power down exit to command
input
CKE to CLK disable
Register set to active command
Parameter
frequency(MHz)
t
CK
 (ns)
1
CS to command disable
Symbol
-7J
100
2
7
5
10
2
1
2
1
3
7
-
3
1
-
- 2
1
0
0
2
1
1
1
0
-8
125
3
9
6
8
3
1
2
1
4
9
-
3
1
-
-2
1
0
0
2
1
1
1
0
83
2
6
4
12
2
1
2
2
3
6
2
3
1
-1
-2
1
0
0
2
1
1
1
0
66
2
6
4
15
2
1
2
2
3
6
2
3
1
-1
- 2
1
0
0
2
1
1
1
0
100
2
7
5
10
2
1
2
1
3
7
2
3
1
- 1
- 2
1
0
0
2
1
1
1
0
-7K
100
2
7
5
10
2
1
2
1
3
7
2
3
1
- 1
- 2
1
0
0
2
1
1
1
0
-10K
100
3
9
6
10
3
1
2
2
5
9
-
3
1
-
- 2
1
0
0
2
1
1
1
0
66
2
6
4
15
2
1
2
2
3
6
2
3
1
-1
- 2
1
0
0
2
1
1
1
0