
ML51/ML54/ML56
Sep. 01, 2020
Page
278
of 719
Rev 2.00
ML
51
/ML
54
/ML
5
6 S
E
RI
E
S
TECHNI
CA
L
RE
F
E
R
E
NC
E
M
A
NU
A
L
ML51/M
L54
/M
L56
Series
Tec
hnical Reference
Manual
LCDCON
– LCD Control
Register
SFR Address
Reset Value
LCDCON
F9H, Page 3
0000_0000 b
7
6
5
4
3
2
1
0
LCDEN
TYPE
BIAS[1:0]
DUTY[1:0]
-
LCD_IE
R/W
R/W
R/W
R/W
-
R/W
Bit
Name
Description
[7]
LCDEN
LCD Enable
0 = LCD circuit OFF. Each COM and SEG pin functions as general purpose I/O and its
multi-functions other than LCD.
1 = LCD circuit ON. COM and enabled SEG pins generate the LCD driving waveform.
[6]
TYPE
Display Type
0 = Type A
1 = Type B
[5:4]
BIAS[1:0]
LCD Bias
00 = Reserved.
01 = 1/2 bias.
10 = 1/3 bias.
11 = 1/4 bias
[3:2]
DUTY[1:0]
LCD Duty
00 = 1/4 duty.
01 = 1/6 duty.
10 = 1/8 duty.
11 = Reserved.
Note that when 1/4 duty is selected, only COM0 to COM3 are used for LCD driving. COM4,
COM5, COM6, COM7 are not used and functions as a general purpose I/O. When 1/6 duty
is selected, only COM0 to COM5 are used for LCD driving.SEG0 and SEG1 are not
available. SEG0 and SEG1 pins function are as COM4 and COM5. When 1/8 duty is
selected, COM0 to COM7 are all used for LCD driving.SEG0, SEG1, SGE2, SEG3 and
SEG4 are not available. SEG0, SEG1, SGE2, SEG3 and SEG4 pins function are as
COM4, COM5, COM6 and COM7.
[1]
-
Reserved
[0]
LCD_IE
LCD Interrupt Enable for CPUMP Overload Interrupt Enable
0 = disable
1 = enable