M66271FP Datasheet, PDF (17/28 Pages) Mitsubishi Electric Semiconductor – OPERATION PANEL CONTROLLER

M66271FP
(2-2) Horizontal display characters number register [R2]
Address R/W
00010
W
Function
CR
D7 D6 D5 D4 D3 D2 D1 D0 Character Number Display Dot Number
0
0
0
0
0
0
—
—
0
0
0
0
0
1
1
8
0
0
0
0
1
0
2
16
↓
↓
↓
1
1
1
1
1
1
63
504
Reset
28_H
Note:
• The number of horizontal display characters per line can set to the extent of Max = 504 dots (= 63
characters)
• When reset, CR = "28_H" (= 40 characters = 320 dots)
Definition of the number of display characters.
The number of display characters means data which is corresponding with 1 byte of VRAM.
In case of binary, 1 bit of VRAM corresponds to 1 dot of display, then 1 character means 8 dots of display.
(2-3) Horizontal synchronous pulse width register [R3]
Address R/W
00100
W
Function
LPW
D7 D6 D5 D4 D3 D2 D1 D0 Character Number
00000000
—
00000001
1
00000010
2
↓
↓
11111111
255
Reset
01_H
• Set the length of horizontal synchronous pulse width which appeared per line in character unit.
Horizontal synchronous pulse output from LP output pin, and use for changing serial/parallel of
displaying data.
Adjusting this pulse width is possible to set frame frequency the fittest value.
And the actual LP output pulse is (LPW setting value – 1CP) in consideration of timing with CP output.
• When reset, LPW = "01_H" (= 1 character)
REJ03F0267-0200 Rev.2.00 Mar 18, 2008
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