MSM6255 Просмотр технического описания (PDF) - Oki Electric Industry
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MSM6255 Datasheet PDF : 39 Pages
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¡ Semiconductor
MSM6255
– Character pitch register
Register
Instruction register
Character pitch register
A0 D7 D6 D5 D4 D3 D2 D1 D0
H
L
L
L
L
L
L
L
H
L
(Vp – 1)
L
(Hp – 1)
Hp represents the number of bits to be displayed among one byte display data sent from RAM.
The value of Hp is the following five types.
Hp
D2
D1
D0
4
L
H
H
5
H
L
L
6
H
L
H
7
H
H
L
8
H
H
H
– Horizontal character number register
Register
Instruction register
Character number register
A0 D7 D6 D5 D4 D3 D2 D1 D0
H
L
L
L
L
L
L
H
L
L
L
(HN – 1)
Assuming that the total horizontal dot number of the display is nH,
nH = Hp x HN, where HN = 2 to 128.
The maximum value of nH = 8 x 128 = 128 bytes = 1,024 dots.
– Duty number register
Register
Instruction register
Time division register
Nx = 2 to 256
A0 D7 D6 D5 D4 D3 D2 D1 D0
H
L
L
L
L
L
L
H
H
L
(NX – 1)
– Cursor form register
Register
Instruction register
Cursor position register
A0 D7 D6 D5 D4 D3 D2 D1 D0
H
L
L
L
L
L
H
L
L
L
(Cpu – 1)
(Cpd – 1)
The cursor is displayed on the lines from Cpu to Cpd in the character display mode. The length
of the cursor in the horizontal direction is equal to the character pitch in the horizontal direction,
Hp. The cursor is not displayed in graphic mode. The relation between the cursor and Vp is as
follows.
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