IS42SM16800F Datasheet, PDF (7/27 Pages) Integrated Silicon Solution, Inc – Auto refresh and self refresh

IS42SM16800F
Figure5: Extended Mode Register
BA1 BA0 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0
Address Bus
13 12 11 10
9
8
7
6
5
4
3
2
1
0
1
0
0
0
0
0
0
DS
0
0
PASR
Extended Mode Register (Ex)
E6 E5
0
0
0
1
1
0
1
1
Driver Strength
Full Strength
1/2 Strength
1/4 Strength
Reserved
E2 E1 E0
Self Refresh Coverage
0
0
0 All Banks
0
0
1 Two Banks (BA1=0)
0
1
0 One Bank (BA1=BA0=0)
0
1
1 Reserved
1
0
0 Reserved
1
0
1 Half of One Bank (BA1=BA0=0, Row Address MSB=0)
1
1
0 Quarter of One Bank (BA1=BA0=0, Row Address 2 MSB=0)
1
1
1 Reserved
Note: E13/E12(BA1/BA0) must be set to “1/0” to select Extend Mode Register (vs. the base Mode Register)
Rev. A | July 2010
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