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W9864G6JH
11.16 Auto-precharge Timing (Read Cycle)
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(1) CAS Latency=2
( a ) burst length = 1
Command
Read
AP
t RP
Act
DQ
( b ) burst length = 2
Q0
Command
Read
AP
Act
t RP
DQ
( c ) burst length = 4
Q0
Q1
Command
Read
AP
Act
t RP
DQ
Q0
Q1
Q2
Q3
( d ) burst length = 8
Command
Read
AP
t RP
Act
DQ
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
(2) CAS Latency=3
( a ) burst length = 1
Command
Read
AP
Act
t RP
DQ
( b ) burst length = 2
Q0
Command
Read
AP
Act
t RP
DQ
Q0
Q1
( c ) burst length = 4
Command
Read
AP
Act
t RP
DQ
Q0
Q1
Q2
Q3
( d ) burst length = 8
Command
Read
AP
Act
t RP
DQ
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Note )
Read
AP
Act
represents the Read with Auto precharge command.
represents the start of internal precharging.
represents the Bank Activate command.
t
When the Auto precharge command is asserted, the period from Bank Activate command to
the start of internal precgarging must be at least RAS (min).
Publication Release Date: Jun. 25, 2013
- 37 -
Revision A04
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