SM2605 - 2Mx32 ESDRAM
Mode Register Set (Address Input for Mode Set)
BA1
BA0
A10
A9
A8
A7
A6
A5
A4
A3
BT
A2
A1
A0
Operation Mode
CAS Latency
Burst Length
BA1
0
BA0
0
M10
0
M9
0
M8
0
M7
0
Mode
M3
0
Burst Type
Sequential
Write
Transfer
No Write
Transfer
0
0
0
1
0
0
1
Interleaved
Burst Length
M6
0
0
0
0
1
1
1
1
M5
0
0
1
1
0
0
1
1
M4 CAS Latency
M2
0
0
0
0
1
1
1
1
M1
0
0
1
1
0
0
1
1
M0
0
1
0
1
0
1
0
1
Sequential
Interleaved
0
1
0
1
0
1
0
1
Reserved
1
1
2
4
1
2
4
2
3
8
8
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
Full Page
Reserved
Reserved
Reserved
Reserved
Extended Mode Register Set (Address Input for Extended Mode Set)
BA1
BA0
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
Operation Mode
Reserved
O/P Z Rsvd
Mode
DQM latency = 2
DQM latency = 1 for CL = 1
BA1
0
BA0
M10
M9
M1
0
Driver Impedance
Z = 15 ohms (nom.)
Z = 30 ohms (nom.)
1
1
0
0
0
1
0
1
Note: This device does not require an EMRS command.
The default setting for DQM Latency is two, and for driver impedance is 15 Ohms.
Rev. 1.6
5
RAMTRON [ RAMTRON INTERNATIONAL CORPORATION ]
