A43E26161 AMIC Technology Corporation, A43E26161 Datasheet - Page 18

• Manufacturer Part Number: A43E26161
• Description: 1m X 16 Bit X 4 Banks Low Power Synchronous Dram
• Manufacturer: AMIC Technology Corporation

5. Write Interrupted by Precharge & DQM
Note : 1. To inhibit invalid write, DQM should be issued.
6. Precharge
7. Auto Precharge
(July, 2008, Version 1.7)
* Note : 1. The row active command of the precharge bank can be issued after t
2. This precharge command and burst write command should be of the same bank, otherwise it is not precharge
interrupt but only another bank precharge of dual banks operation.
CMD
DQM
DQ
CLK
DQ(CL2)
DQ(CL3)
D Q ( C L 2 )
D Q ( C L 3 )
1) Normal Write (BL=4)
2) Read (BL=4)
1 ) N o r m a l W r it e ( B L = 4 )
2 ) R e a d ( B L = 4 )
The new read/write command of other active bank can be issued from this point.
At burst read/write with auto precharge,
CMD
CMD
C M D
C M D
CLK
DQ
CLK
C L K
D Q
C L K
WR
D0
WR
D0
W R
D 0
RD
D1
R D
D1
Masked by DQM
D 1
D2
D2
Q0
D 2
D3
Q 0
Note 1
PRE
D3
Q0
Q1
D 3
Q 1
Q 0
Auto Precharge Starts
Note 2
Auto Precharge Starts
t
Q1
P R E
Q2
Q 1
R D L
Q 2
CAS
P R E
Q2
Q3
Note 1
Q 2
interrupt of the same/another bank is illegal.
Q 3
17
Note 1
Q3
Q 3
RP
from this point.
AMIC Technology, Corp.
A43E26161