LC74781M View Datasheet(PDF) - SANYO -> Panasonic
Part Name
Description
Manufacturer
LC74781M Datasheet PDF : 16 Pages
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LC74781, 74781M
Second byte
DA0 to DA7 Register name
State
Register content
Function
7
—
0
0
6
c6
1
0
5
c5
1
0
4
c4
1
0
3
c3
Character code (00 to 7F hexadecimal)
1
0
2
c2
1
0
1
c1
1
0
0
c0
1
Note: The register states are all set to zero when the LC74781/M is reset with the RST pin.
Note
z COMMAND2 (Vertical display start position and vertical character size setup command)
First byte
DA0 to DA7
7
6
5
4
3
2
1
0
Register name
—
—
—
—
VS21
VS20
VS11
VS10
State
1
0
1
0
0
1
0
1
0
1
0
1
Register content
Function
Command 2 identification code
Set the vertical display start position and vertical character size.
VS21
VS20
0
0
1H per dot
1
3H per dot
VS11
VS10
0
0
1H per dot
1
3H per dot
1
2H per dot
1H per dot
1
2H per dot
1H per dot
Note
Second line vertical character size
First line vertical character size
Second byte
DA0 to DA7 Register name
State
Register content
Function
7
—
0 Second byte identification bit
0 Crystal oscillator frequency: 2fsc
6
FS
1 Crystal oscillator frequency: 4fsc
5
VP5
(MSB)
0
If VS is the vertical display start position then:
1
0
5
VS
=
H
×
(2Σ
n=
20nVPn)
4
VP4
1
H: the horizontal synchronization pulse period
0
3
VP3
1
0
2
VP2
1
0
1
VP1
1
0
VP0
0
(LSB)
1
Note: The register states are all set to zero when the LC74781/M is reset with the RST pin.
Note
The vertical display start position is set
by the 6 bits VP0 to VP5.
The weight of bit 1 is 2H.
No. 4988-9/16
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