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13.1.3
Pin Configuration
Table 13.1 shows the LCD controller/driver pin configuration.
Table 13.1 Pin Configuration
Name
Segment output pins
Common output pins
Segment external expansion
signal pin*
LCD power supply pins
Note:
* The external expansion function for LCD segments is not implemented in the H8/38347
Group and H8/38447 Group.
13.1.4
Register Configuration
Table 13.2 shows the register configuration of the LCD controller/driver.
Table 13.2 LCD Controller/Driver Registers
Name
LCD port control register
LCD control register
LCD control register 2
LCD RAM
Clock stop register 2
Abbr.
I/O
SEG
to SEG
Output
40
1
COM
to COM
Output
4
1
CL
Output
1
CL
Output
2
M
Output
DO
Output
V
, V
, V
, V
—
0
1
2
3
Abbr.
R/W
LPCR
R/W
LCR
R/W
LCR2
R/W
—
R/W
CKSTPR2
R/W
Section 13 LCD Controller/Driver
Function
LCD segment drive pins
All pins are multiplexed as port pins
(setting programmable)
LCD common drive pins
Pins can be used in parallel with static
or 1/2 duty
Multiplexed as the display data latch
clock, SEG
40
Multiplexed as the display data shift
clock, SEG
39
Multiplexed as the LCD alternating
signal, SEG
37
Multiplexed as the serial display data,
SEG
38
Used when a bypass capacitor is
connected externally, and when an
external power supply circuit is used
Initial Value
Address
H'00
H'FFC0
H'80
H'FFC1
H'60
H'FFC2
Undefined
H'F740 to H'F753
H'FF
H'FFFB
Rev. 6.00 Aug 04, 2006 page 433 of 680
REJ09B0145-0600
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