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LM9831CCVJDX Datasheet(PDF) 6 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # LM9831CCVJDX
Description  LM9831 42-Bit Color, 1200dpi USB Image Scanner
PDF  41 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM9831CCVJDX Datasheet(HTML) 6 Page - National Semiconductor (TI)

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Timing Diagrams
Figure 1: DRAM Read and Write
Column Addressn
A0-A9
Row Addressn
Row Addressn+1
RAS
CAS
RD
Data
D0-D15
tRD SETUP
tRD HOLD
WR
Data
D0-D15
tWR SETUP
tWR HOLD
0
1234560
48MHz Internal Clock
(tPERIOD = 20.83ns)
Read Operation
Write Operation
RAS
CAS
01234
560
48MHz Internal Clock
(tPERIOD = 20.83ns)
Figure 2: DRAM Refresh (CAS before RAS)



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