EDJ2108EEBG, EDJ2116EEBG
Table 14: IDD7 Measurement-Loop Pattern
CK,
/CK
Sub
-Loop number
Cycle
Com-
mand
A11
A7 A3 A0
CKE
/CS /RAS /CAS /WE ODT BA*3 -Am A10 -A9 -A6 -A2 Data*2
0
ACT
RDA
D
0
0
1
0
1
0
1
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
⎯
1
00000000
0
2
⎯
…
Repeat above D Command until nRRD − 1
nRRD
ACT
0
0
1
0
1
0
1
0
0
1
1
0
0
0
0
1
1
1
0
0
0
0
1
0
0
0
0
F
F
F
0
0
0
⎯
nRRD + 1 RDA
00110011
1
nRRD + 2
…
D
⎯
Repeat above D Command until 2 × nRRD − 1
2
3
2 × nRRD Repeat Sub-Loop 0, but BA= 2
3 × nRRD Repeat Sub-Loop 1, but BA= 3
D
1
0
0
0
0
3
0
0
0
F
0
⎯
4
5
6
4 × nRRD
Assert and repeat above D Command until nFAW − 1, if necessary
Repeat Sub-Loop 0, but BA= 4
nFAW
nFAW
Repeat Sub-Loop 1, but BA= 5
Repeat Sub-Loop 0, but BA= 6
Repeat Sub-Loop 1, but BA= 7
+ nRRD
nFAW
7
8
9
+ 2 × nRRD
nFAW
+ 3 × nRRD
D
1
0
0
0
0
7
0
0
0
F
0
0
⎯
⎯
nFAW
+ 4 × nRRD
Assert and repeat above D Command until 2 × nFAW − 1, if necessary
2 × nFAW
+ 0
ACT
0
0
1
1
0
0
0
0
0
F
2 × nFAW
+ 1
Toggling Static H
RDA
D
0
1
1
0
0
0
1
0
0
0
0
0
0
0
1
0
0
0
F
F
0
0
00110011
10
11
⎯
2 × nFAW
+ 2
Repeat above D Command until 2 × nFAW + nRRD − 1
2 × nFAW
+ nRRD
ACT
0
0
1
1
0
1
0
0
0
0
0
⎯
2 × nFAW
+ nRRD + 1
RDA
D
0
1
1
0
0
0
1
0
0
0
1
1
0
0
1
0
0
0
0
0
0
0
00000000
⎯
2 × nFAW
+ nRRD + 2
Repeat above D Command until 2 × nFAW + 2 × nRRD − 1
2 × nFAW
+2 × nRRD
2 × nFAW
+ 3 × nRRD
12
13
Repeat Sub-Loop 10, but BA= 2
Repeat Sub-Loop 11, but BA= 3
D
1
0
0
0
0
3
0
0
0
0
0
⎯
2 × nFAW
+ 4 × nRRD
14
15
16
Assert and repeat above D Command until 3 × nFAW − 1, if necessary
3 × nFAW Repeat Sub-Loop 10, but BA= 4
3 × nFAW
Repeat Sub-Loop 11, but BA= 5
+nRRD
3 × nFAW
17
18
19
Repeat Sub-Loop 10, but BA= 6
+ 2 × nRRD
3 × nFAW
Repeat Sub-Loop 11, but BA= 7
+ 3 × nRRD
D
1
0
0
0
0
7
0
0
0
0
0
⎯
3 × nFAW
+ 4 × nRRD
Assert and repeat above D Command until 4 × nFAW − 1, if necessary
Notes: 1. DM must be driven low all the time. DQS, /DQS are used according to read commands, otherwise MID-LEVEL.
2. Burst sequence driven on each DQ signal by read command. Outside burst operation, DQ signals are MID-LEVEL.
3. BA: BA0 to BA2.
4. Am: m means Most Significant Bit (MSB) of Row address.
Data Sheet E1750E31 (Ver. 3.1)
18
ELPIDA [ ELPIDA MEMORY ]
