A43E26161
Mode Register Set Cycle
Auto Refresh Cycle
0
1
2
3
4
5
6
0
1
2
3
4
5
6
7
8
9
10
CLOCK
CKE
High
High
*Note 2
CS
t
RC
RAS
CAS
* Note 1
* Note 3
Key
Ra
ADDR
WE
DQM
DQ
Hi-Z
Hi-Z
MRS
Auto Refresh
New Command
: Don't care
New
Command
* All banks precharge should be completed before Mode Register Set cycle and auto refresh cycle.
MODE REGISTER SET CYCLE
* Note : 1.
,
,
&
activation at the same clock cycle with address key will set internal
WE
CS RAS CAS
mode register.
2. Minimum 2 clock cycles is required before new
3. Please refer to Mode Register Set table.
activation.
RAS
(December, 2004, Version 1.0)
35
AMIC Technology, Corp.