Renesas H8 Series Hardware Manual

Section 13 LCD Controller/Driver
Rev. 7.00 Mar 10, 2005 page 419 of 652
REJ09B0042-0700
13.2 Register Descriptions
13.2.1 LCD Port Control Register (LPCR)
Bit
Initial value
Read/Write
7
DTS1
0
R/W
6
DTS0
0
R/W
5
CMX
0
R/W
4


W
3
SGS3
0
R/W
0
SGS0
0
R/W
2
SGS2
0
R/W
1
SGS1
0
R/W
LPCR is an 8-bit read/write register which selects the duty cycle and LCD driver pin functions.
Bits 7 to 5—Duty Cycle Select 1 and 0 (DTS1, DTS0), Common Function Select (CMX)
The combination of DTS1 and DTS0 selects static, 1/2, 1/3, or 1/4 duty. CMX specifies whether
or not the same waveform is to be output from multiple pins to increase the common drive power
when not all common pins are used because of the duty setting.
Bit 7
DTS1
Bit 6
DTS0
Bit 5
CMX Duty Cycle Common Drivers Notes
000Static COM
1
(initial value)
Do not use COM
4
, COM
3
, and
COM
2
.
1COM
4
to COM
1
COM
4
, COM
3
, and COM
2
output
the same waveform as COM
1
.
0101/2 dutyCOM
2
and COM
1
Do not use COM
4
and COM
3
.
1COM
4
to COM
1
COM
4
outputs the same waveform
as COM
3
, and COM
2
outputs the
same waveform as COM
1
.
1001/3 dutyCOM
3
to COM
1
Do not use COM
4
.
1COM
4
to COM
1
Do not use COM
4
.
1101/4 dutyCOM
4
to COM
1
—
1
Bit 4—Reserved
Bit 4 is reserved. It can only be written with 0.

Renesas H8 Series Specifications

General

Brand	Renesas
Model	H8 Series
Category	Computer Hardware
Language	English