IBMN312164CT3
IBMN312804CT3
IBMN312404CT3
Preliminary
128Mb Synchronous DRAM - Die Revision B
Precharge Termination
The Precharge Command may be used to terminate either a burst read or burst write operation. When the
Precharge command is issued, the burst operation is terminated and bank precharge begins. For burst read
operations, valid data will continue to appear on the data bus as a function of CAS Latency.
Burst Read Interrupted by Precharge
(Burst Length = 8, CAS Latency = 2, 3)
T0
T1
T2
T3
T4
T5
T6
T7
T8
CK
READ Ax
NOP
NOP
NOP
NOP
NOP
NOP
NOP
Precharge A
DOUT Ax
COMMAND
0
t
‡
RP
*
CAS latency = 2
DOUT Ax
DOUT Ax
DOUT Ax
3
0
1
2
tCK2, DQs
t
‡
RP
*
DOUT Ax
3
CAS latency = 3
DOUT Ax
DOUT Ax
DOUT Ax
0
1
2
tCK3, DQs
Bank A can be reactivated at completion of tRP
.
‡
tRP is a function of clock cycle time and speed sort.
*
See the Clock Frequency and Latency table.
©IBM Corporation. All rights reserved.
06K7582.H03335A
01/01
Use is further subject to the provisions at the end of this document.
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