IC42S16160 Datasheet, PDF (26/69 Pages) Integrated Circuit Solution Inc – 4M x 16Bit x 4 Banks (256-MBIT) SDRAM

IC42S16160
BURST Termination
There are two methods to terminate a burst operation other than using a read or a write command. One is the burst stop
command and the other is the precharge command.
BURST Stop Command
During a read burst, when the burst stop command is issued, the burst read data are terminated and the data bus goes to
high-impedance after the CAS latency from the burst stop command.
During a write burst, when the burst stop command is issued, the burst write data are termained and data bus goes to Hi-
Z at the same clock with the burst stop command.
Burst Termination
CLK
Command
Burst lengh=X, CAS Intency=2,3
T0
T1
T2
T3
T4
T5
T6
T7
Read
BST
CAS latency=2
DQ
CAS latency=3
DQ
Hi-Z
Q0
Q1
Q2
Hi-Z
Q0
Q1
Q2
Remark BST: Burst stop command
CLK
Command
CAS latency=2,3
DQ
Burst lengh=X, CAS latency=2,3
T0
T1
T2
T3
T4
T5
T6
T7
Write
BST
Q0
Q0
Q1
Q2
Hi-Z_
Remark BST: Burst command
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Integrated Circuit Solution Inc.
DR037-0A 9/05/2003