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UPD6465CS датащи(PDF) 20 Page - NEC

номер детали UPD6465CS
подробное описание детали  ON-SCREEN CHARACTER DISPLAY CMOS LSI FOR 12-LINE, 24-COLUMN DECK-TYPE VCR
PDF  52 Pages
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производитель  NEC [NEC]
домашняя страница  http://www.nec.com/
Logo NEC - NEC

UPD6465CS датащи(HTML) 20 Page - NEC

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µPD6464A,6465
20
2.10
Output Level Control Command
The
µPD6464A, 6465 can set the luminance level of the character and background (including the frame) by
using a command.
This command is a 2-byte command, and must be input in 16-bit units even when successively input.
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
100100
0
VPD
0
0
0
0
0
1
VC1
VC0
Character level control bits
VC1
VC0
0
1
1
1
Function
75 I.R.E.
90 I.R.E.
Setting Prohibited
Internal video signal amplitude control bit
VPD
0
1
Function
1 Vp-p amplitude
2 Vp-p amplitude
1
0
Setting Prohibited
0
0
•
Character level control bits
These bits can select two character luminance levels: 75 or 90 I.R.E.
If these bits are not set, the character level is set to 75 I.R.E.
Remark
The background (frame) level is fixed to 0 I.R.E.
•
Internal video signal amplitude control bit
This bit sets the amplitude of the internal video signal to 1 or 2 Vp-p (this amplitude must match the amplitude of
the signal input in the external video signal mode). When the amplitude is set to 1 Vp-p, the voltage applied to the
VCNT pin must be 2.5 V.
When the amplitude is set to 2 Vp-p, apply 5 V to the VCNT pin.



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