W9825G6KH
11.16 Auto-precharge Timing (Write Cycle)
0
1
2
3
4
5
6
7
8
9
10
11
12
CLK
(1) CAS Latency= 2
(a) burst length = 1
Command
Write
D0
AP
Act
tWR
tRP
DQ
(b) burst length = 2
Command
Write
D0
AP
Act
AP
tWR
tRP
DQ
D1
D1
(c) burst length = 4
Command
Act
D7
Write
D0
tRP
tWR
DQ
D2
D3
D3
(d) burst length = 8
Command
Write
D0
AP
Act
tWR
tRP
DQ
D1
D2
AP
D4
D5
Act
D6
(2) CAS Latency= 3
(a) burst length = 1
Command
Write
D0
tWR
tRP
DQ
(b) burst length = 2
Command
Write
D0
AP
Act
tWR
tRP
DQ
D1
D1
D1
(c) burst length = 4
Command
Write
D0
AP
D5
Act
tWR
tRP
DQ
D2
D2
D3
D3
(d) burst length = 8
Command
Write
D0
AP
Act
tWR
tRP
DQ
D4
D6
D7
Note )
represents the Write with Auto precharge command.
represents the start of internal precharing.
represents the BankActive command.
Write
AP
Act
When the /auto precharge command is asserted,the period from BankActivate
command to the start of intermal precgarging must be at least tRAS (min).
Publication Release Date: Sep. 01, 2014
Revision: A02
- 36 -
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