LC74780(2001) データシートの表示（PDF） - SANYO -> Panasonic
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LC74780 Datasheet PDF : 14 Pages
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LC74780, 74780M
COMMAND2: second byte
DA0 to
DA7
Register name
Status
0
0
VP0 (LSB)
1
Register Contents
Function
Initial vertical coordinate position determined by
0
1
VP1
where H is the horizontal synchronization pulse period
1
0
2
VP2
1
0
3
VP3
1
0
4
VP4
1
0
5
VP5 (MSB)
1
6
FS
0
2fSC crystal oscillator frequency
1
4fSC crystal oscillator frequency
7
0
Second byte identification bit
Note
On system reset with RST, the status of all registers is set to 0.
Remarks
The initial vertical coordinate
position is set in 6 bits, VP0 to
VP5, where the LSB, VP0,
corresponds to 2H
COMMAND3: Horizontal Display Position and Character Size Setting Command
COMMAND3: first byte
DA0 to
DA7
Register name
Status
Register Contents
Function
Remarks
0
HS10
0
HS11
HS10
1
0
0
0
1
0
1
HS11
1
1
0
1
1
Width
1TC/pixel
2TC/pixel
3TC/pixel
1TC/pixel
First line horizontal character size
0
HS21
HS20
2
HS20
1
0
0
0
1
0
3
HS21
1
1
0
1
1
Width
1TC/pixel
2TC/pixel
3TC/pixel
1TC/pixel
4
1
5
1
COMMAND3 identification code
6
0
7
1
Second line horizontal character
size
No.4490–8/14
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