HD64F38024HV Datasheet, PDF (437/684 Pages) Renesas Technology Corp – Hardware Manual Renesas 8-Bit Single-Chip Microcomputer H8 Family/H8/300L Super Low Power Series

Section 13 LCD Controller/Driver
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
3
2
1
0
⎯ SGS3 SGS2 SGS1 SGS0
⎯
0
0
0
0
W
R/W R/W R/W 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
0
Bit 6
DTS0
0
Bit 5
CMX
0
1
0
1
0
1
1
0
0
1
1
1
0
1
Duty Cycle
Static
1/2 duty
1/3 duty
1/4 duty
Common Drivers Notes
COM1 (initial value) Do not use COM4, COM3, and
COM2.
COM4 to COM1
COM4, COM3, and COM2 output
the same waveform as COM1.
COM2 and COM1 Do not use COM4 and COM3.
COM4 to COM1
COM4 outputs the same waveform
as COM3, and COM2 outputs the
same waveform as COM1.
COM3 to COM1
Do not use COM4.
COM4 to COM1
Do not use COM4.
COM4 to COM1
—
Bit 4—Reserved
Bit 4 is reserved. It can only be written with 0.
Rev. 8.00 Mar. 09, 2010 Page 415 of 658
REJ09B0042-0800