HD6473887 Datasheet, PDF (463/523 Pages) Renesas Technology Corp – Hitachi Single-Chip Microcomputer

LPCR—LCD port control register
Bit
Initial value
Read/Write
7
DTS1
0
R/W
6
DTS0
0
R/W
5
CMX
0
R/W
H'C0 LCD controller/driver
4
SGX
0
R/W
3
SGS3
0
R/W
2
SGS2
0
R/W
1
SGS1
0
R/W
0
SGS0
0
R/W
Segment driver select
Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 Function of Pins SEG32 to SEG1
SEG40 SEG32 SEG24 SEG16
SGX SGS3 SGS2 SGS1 SGS0 to SEG33 to SEG25 to SEG17 to SEG9
0 0 0 00
Port
Port
Port
Port
0 0 0 01
SEG
Port
Port
Port
00
0
1*
SEG SEG
Port
Port
00
1
0*
SEG SEG SEG
Port
00 11*
SEG SEG SEG
SEG
01
*
**
SEG SEG SEG
1
0
0
0
0
Port^*1
Port
Port
SEG
Port
1 0 0 01
Do not use
10 01*
10 1**
11 * **
Note: *1. SEG40 to SEG37 are external expansion pins.
SEG8
to SEG1
Port
Port
Port
Port
Port
SEG
Port
Notes
(Initial value)
*: Don’t care
Expansion signal select
0
SEG40 to SEG37 pin* (Initial value)
1
CL1, CL2, DO and M pin
Note: * Functions as ports when SGS3 to SGS0 are set at "0000".
Duty select, common function select
Bit 7 Bit 6 Bit 5
DTS1 DTS0 CMX
000
001
010
011
100
101
110
111
Duty Cycle Common Drivers
Static
1/2 duty
1/3 duty
COM1
COM4 to COM1
COM2 to COM1
COM4 to COM1
COM3 to COM1
COM4 to COM1
1/4 duty COM4 to COM1
Notes
Do not use COM4, COM3, and COM2
COM4 to COM2 output the same waveform as COM1
Do not use COM4 and COM3
COM4 outputs the same waveform as COM3 and COM2 outputs the same waveform as COM1
Do not use COM4
Do not use COM4
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