參數(shù)資料
型號: W982516AH-8H
英文描述: x16 SDRAM
中文描述: x16內(nèi)存
文件頁數(shù): 33/41頁
文件大小: 1369K
代理商: W982516AH-8H
W982504AH
Publication Release Date: December 2000
- 33 -
Revision A2
Operating Timing Example, continued
Autoprecharge Timing (Read Cycle)
Read
AP
0
11
10
9
8
7
6
5
4
3
2
1
Q0
Q0
Read
AP
Act
Q1
Read
AP
Act
Q1
Q2
AP
Q6
Act
Read
Act
Q0
Q3
(1) CAS
Latency=2
( a ) burst length = 1
Command
Read
Act
AP
When the Auto precharge command is asserted, the period from Bank Activate command to
the start of internal precgarging must be at least t
RAS
(min).
represents the Read with Auto precharge command.
represents the start of internal precharging.
represents the Bank Activate command.
Note )
t
RP
t
RP
t
RP
( b ) burst length = 2
Command
( c ) burst length = 4
Command
( d ) burst length = 8
Command
DQ
DQ
DQ
DQ
Q0
Q1
Q2
Q3
Q4
Q5
Q7
t
( a ) burst length = 1
Command
( b ) burst length = 2
Command
( c ) burst length = 4
Command
( d ) burst length = 8
Command
DQ
DQ
DQ
DQ
Q0
Read
AP
Act
Q0
Read
AP
Act
Q1
Q0
Read
AP
Act
Q1
Q2
Q3
Read
AP
Act
Q0
Q1
Q2
Q3
Q4
Q5
Q6
Q7
(2) CAS
t
RP
t
RP
t
RP
t
RP
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