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DP8440VLJ-40 数据表(PDF) 13 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
部件名 DP8440VLJ-40
功能描述  microCMOS Programmable 16/64 Mbit Dynamic RAM Controller/Driver
PDF  46 Pages
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制造商  NSC [National Semiconductor (TI)]
网页  http://www.national.com
标志 NSC - National Semiconductor (TI)

DP8440VLJ-40 数据表(HTML) 13 Page - National Semiconductor (TI)

Back Button DP8440VLJ-40 Datasheet HTML 9Page - National Semiconductor (TI) DP8440VLJ-40 Datasheet HTML 10Page - National Semiconductor (TI) DP8440VLJ-40 Datasheet HTML 11Page - National Semiconductor (TI) DP8440VLJ-40 Datasheet HTML 12Page - National Semiconductor (TI) DP8440VLJ-40 Datasheet HTML 13Page - National Semiconductor (TI) DP8440VLJ-40 Datasheet HTML 14Page - National Semiconductor (TI) DP8440VLJ-40 Datasheet HTML 15Page - National Semiconductor (TI) DP8440VLJ-40 Datasheet HTML 16Page - National Semiconductor (TI) DP8440VLJ-40 Datasheet HTML 17Page - National Semiconductor (TI) Next Button
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Programming the DP844041 (Continued)
43 PROGRAMMING SELECTION
(Continued)
ROW ADDRESS HOLD TIME SELECT tRAH
C7
010 ns
115 ns
PAGMISS INPUT OR OUTPUT SELECT
C8
0
Input
1
Output
CAS PRECHARGE DURING BURST
C9
Read Cycle
Write Cycle
0
T1T
11T
2T
REFRESH MODE SELECT
C10
0
RAS Only Refresh
1
CAS-before-RAS Refresh
FINE TUNE REFRESH CYCLE
C11
015 ms
1
120 ms
COLUMN ADDRESS COUNTER CONTROL SELECT
B0
0
DTACK Falling Edge
1
DTACK Rising Edge
PAGE OR NORMAL MODE SELECT
B1
0
Page Mode
1
Normal Mode
ADDRESS LATCH MODE
ECAS 0
0
Latch Mode
1
Fall Through Mode
BURST REQUEST SELECT (BSTARQ INPUT)
ECAS1
0
Active Low
1
Active High
CAS AND DTACK CLOCK EDGE SELECT
ECAS2
0
Rising Edge
1
Falling Edge
RESERVED
ECAS3
0
1
13



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