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E1922E20 Datasheet, PDF (14/29 Pages) Elpida Memory – 4G bits DDR3L SDRAM | |||
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EDJ4204EFBG, EDJ4208EFBG, EDJ4216EFBG
Table 8: IDD1 Measurement-Loop Pattern
CK,
Sub Cycle Com-
A11
A7 A3 A0
/CK
CKE -Loop number mand /CS /RAS /CAS /WE ODT BA*3 -Am A10 -A9 -A6 -A2 Data*2
0
ACT 0
0
1
1
0
0
0
0
0 0 0â¯
1, 2
D, D 1
0
0
0
0
0
0
0
0 0 0â¯
3, 4
/D, /D 1
1
1
1
0
0
0
0
0 0 0â¯
â¦
Repeat pattern 1...4 until nRCD â 1, truncate if necessary
nRCD RD 0
1
0
1
0
0
0
0
0 0 0 00000000
â¦
Repeat pattern 1...4 until nRAS â 1, truncate if necessary
nRAS PRE 0
0
1
0
0
0
0
0
0 0 0â¯
â¦
Repeat pattern 1...4 until nRC â 1, truncate if necessary
1 Ã nRC ACT 0
0
1
1
0
0
0
0
0 F 0â¯
+0
0
1 Ã nRC
+ 1, 2
D, D 1
0
0
0
0
0
0
0
0 F 0â¯
Toggling Static H
1 Ã nRC
/D, /D 1
1
1
1
0
0
0
0
0 F 0â¯
+ 3, 4
â¦
Repeat pattern nRC + 1,..., 4 until nRC + nRCD â 1, truncate if necessary
1 Ã nRC RD 0
1
0
1
0
0
0
0
0 F 0 00110011
+ nRCD
â¦
Repeat pattern nRC + 1,..., 4 until nRC +nRAS â 1, truncate if necessary
1 Ã nRC PRE 0
+ nRAS
0
1
0
0
0
0
0
0 F 0â¯
â¦
Repeat pattern nRC + 1,..., 4 until 2 Ã nRC â 1, truncate if necessary
1
2 Ã nRC Repeat Sub-Loop 0, use BA= 1 instead
2
4 Ã nRC Repeat Sub-Loop 0, use BA= 2 instead
3
6 Ã nRC Repeat Sub-Loop 0, use BA= 3 instead
4
8 Ã nRC Repeat Sub-Loop 0, use BA= 4 instead
5
10 Ã nRC Repeat Sub-Loop 0, use BA= 5 instead
6
12 Ã nRC Repeat Sub-Loop 0, use BA= 6 instead
7
14 Ã nRC Repeat Sub-Loop 0, use BA= 7 instead
Notes: 1.
2.
3.
4.
DM must be driven low all the time. DQS, /DQS are used according to read commands, otherwise MID-LEVEL.
Burst sequence driven on each DQ signal by read command. Outside burst operation, DQ signals are MID-LEVEL.
BA: BA0 to BA2.
Am: m means Most Significant Bit (MSB) of Row address.
Data Sheet E1922E20 (Ver. 2.0)
14
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