14. Dot Matrix LCD Controller (H8/3854 Group)
Rev.3.00 Jul. 19, 2007 page 377 of 532
REJ09B0397-0300
14.1.3 Pin
Configuration
Table 14.1 shows the pins assigned to the LCD controller.
Table 14.1 Pin Configuration
Pin Name
Abbr.
I/O
Function
Common output pins
COM1 to COM16 Output LCD common drive pins
Segment output pins
SEG1 to SEG40
Output LCD segment drive pins
LCD drive power supply
level
V1OUT to V5OUT I/O
LCD drive power supply level input/output
pins
14.1.4 Register
Configuration
The LCD controller has one index register and five control registers, all of which are accessed via
an I/O port interface. Except for the display data register (LR4), these registers cannot be read.
The LCD controller register configuration is shown in table 14.2.
Table 14.2 Register Configuration
Index
Register
Name
Abbr. R/W RS IR2 IR1 IR0
Index register
IR
W
0
⎯
⎯
⎯
Control
register
1
LR0 W 1 0 0 0
Control
register
2
LR1 W
1
Address
register
LR2 W
1
0
Frame frequency setting register
LR3
W
1
Display data register
LR4
R/W
1
0
0
Содержание F-ZTAT H8 Series
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