hd64338342hw Renesas Electronics Corporation., hd64338342hw Datasheet - Page 470

• Manufacturer Part Number: hd64338342hw
• Description: Renesas 8-bit Single-chip Microcomputer H8 Family/h8/300l Super Low Power Series
• Manufacturer: Renesas Electronics Corporation.

Section 13 LCD Controller/Driver
13.2
13.2.1
LPCR is an 8-bit read/write register which selects the duty cycle and LCD driver pin functions.
LPCR is initialized to H'00 upon reset.
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
0
0
0
0
1
1
1
1
Rev. 6.00 Aug 04, 2006 page 434 of 680
REJ09B0145-0600
Bit
Initial value
Read/Write
Register Descriptions
LCD Port Control Register (LPCR)
Bit 6
DTS0
0
0
1
1
0
0
1
1
DTS1
R/W
7
0
Bit 5
CMX
0
1
0
1
0
1
0
1
DTS0
R/W
6
0
Duty Cycle
Static
1/2 duty
1/3 duty
1/4 duty
CMX
R/W
5
0
COM
COM
COM
Common
Drivers
COM
(initial value)
COM
COM
COM
SGX
R/W
4
0
1
4
2
4
3
4
4
to COM
to COM
to COM
to COM
to COM
to COM
SGS3
R/W
1
1
1
1
1
1
3
0
Notes
Do not use COM
COM
COM
the same waveform as COM
Do not use COM
COM
as COM
same waveform as COM
Do not use COM
Do not use COM
—
SGS2
R/W
2
4
4
.
, COM
2
0
outputs the same waveform
3
, and COM
3
, and COM
SGS1
R/W
4
4
4
4
1
0
, COM
.
.
and COM
2
outputs the
3
2
SGS0
1
, and
R/W
.
output
0
0
3
1
.
.