Table of Contents
Advertisement
14.1.3
Pin Configuration
Table 14.1 shows the pins assigned to the LCD controller.
Table 14.1 Pin Configuration
Pin Name
Common output pins
Segment output pins
LCD drive power supply
level
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
Name
Index register
Control register 1
Control register 2
Address register
Frame frequency setting register
Display data register
Abbr.
I/O
COM1 to COM16
Output LCD common drive pins
SEG1 to SEG40
Output LCD segment drive pins
V1OUT to V5OUT I/O
Abbr.
IR
LR0
LR1
LR2
LR3
LR4
14. Dot Matrix LCD Controller (H8/3854 Group)
Function
LCD drive power supply level input/output
pins
R/W
RS
W
0
W
1
W
W
W
R/W
Rev.3.00 Jul. 19, 2007 page 377 of 532
Index Register
IR2
IR1
IR0
⎯
⎯
⎯
0
0
0
1
1
0
1
1
0
0
REJ09B0397-0300
Advertisement
Table of Contents
