Datasheet

Table 88. IDD4WC Measurement - Loop Pattern
[1]
CK/
CK#
CKE
Sub-
Loop
Cycle
Number
CMD
CS#
ACT#
RAS#/
A16
CAS#/
A15
WE#/
A14
ODT
BG0-1
[2]
BA0-1
A12/
BC#
A13,
A11
A10
A9-A7
A6-A3
A2-A0
Data
[3]
Toggling
Static High
0
0
WR
0
1
1
0
0
1
0
0
0
0
0
0
0
0
D0=00,
D1=FF
D2=FF,
D3=00
D4=FF,
D5=00
D6=00,
D7=FF
D8=CRC
0
1-2
D,D
1
0
0
0
0
1
0
0
0
0
0
0
0
0
-
0
3-4
D#,D#
1
1
1
1
1
1
3
[2]
3
0
0
0
7
F
0
-
0
5
WR
0
1
1
0
0
1
1
1
0
0
0
7
F
0
D0=FF,
D1=00
D2=00,
D3=FF
D4=00,
D5=FF
D6=FF,
D7=00
D8=CRC
0
6-7
D,D
1
0
0
0
0
1
0
0
0
0
0
0
0
0
-
0
8-9
D#,D#
1
1
1
1
1
1
3
[2]
3
0
0
0
7
F
0
-
2
10-14
Repeat sub-loop 0, use BG[1:0]=0, BA[1:0]=2 instead
3
15-19
Repeat sub-loop 1, use BG[1:0]=1, BA[1:0]=3 instead
4
20-24
Repeat sub-loop 0, use BG[1:0]=0, BA[1:0]=1 instead
5
25-29
Repeat sub-loop 1, use BG[1:0]=1, BA[1:0]=2 instead
6
30-34
Repeat sub-loop 0, use BG[1:0]=0, BA[1:0]=3 instead
7
35-39
Repeat sub-loop 1, use BG[1:0]=1, BA[1:0]=0 instead
8
40-44
Repeat sub-loop 0, use BG[1:0]=2, BA[1:0]=0 instead
For x4
and
x8 only
9
45-49
Repeat sub-loop 1, use BG[1:0]=3, BA[1:0]=1 instead
10
50-54
Repeat sub-loop 0, use BG[1:0]=2, BA[1:0]=2 instead
11
55-59
Repeat sub-loop 1, use BG[1:0]=3, BA[1:0]=3 instead
12
60-64
Repeat sub-loop 0, use BG[1:0]=2, BA[1:0]=1 instead
13
65-69
Repeat sub-loop 1, use BG[1:0]=3, BA[1:0]=2 instead
14
70-74
Repeat sub-loop 0, use BG[1:0]=2, BA[1:0]=3 instead
15
75-79
Repeat sub-loop 1, use BG[1:0]=3, BA[1:0]=0 instead
Note 1. DQS, DQS# are V
DDQ
.
Note 2. BG1 is don’t care for x16 device.
Note 3. Burst Sequence driven on each DQ signal by Write Command.
AS4C256M16D4
Confidential
- 176 of 201 -
Rev.1.0 Aug.2019