Rev. 1.40
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BS67F340/BS67F350/BS67F360/BS67F370
Enhanced Touch A/D Flash MCU with LCD Driver
BS67F340/BS67F350/BS67F360/BS67F370
Enhanced Touch A/D Flash MCU with LCD Driver
LCDC0 Register
Bit
7
6
5
4
3
2
1
0
Name
TYPE
RCT
LCDP1
LCDP0
RSEL�
RSEL1
RSEL0
LCDEN
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
POR
0
0
0
0
0
0
0
0
Bit 7
TYPE
: LCD waveform type selection
0: Type A
1: Type B
Bit 6
RCT
: LCD bias type selection
0: R type
1: C type
Bit 5~4
LCDP1~LCDP0
: C type bias LCD power supply selection
00: From external pin PLCD, V1 or V2
01: From internal reference voltage V
REFIN
supplied to VC
10: From internal voltage V
DD
supplied to VB
11: From internal voltage V
DD
supplied to VA
The V
REFIN
is an internal reference voltage with an approximate level of 1.08V.
Bit 3~1
RSEL2~RSEL0
: R type total bias resistors selection
000: 1170 kΩ
001: 225 kΩ
010: 60 kΩ
011: Quick charging mode – switching between 60 kΩ and 1170 kΩ
1xx: Quick charging mode – switching between 60 kΩ and 225 kΩ
The device provides the low power quick charging mode for R type LCD display. In
quick charging mode the LCD will provide more bias current at the beginning of each
COMn phase as LCD display refreshes and then provide less bias current to reduce the
bias current consumption in the remaining time duration in the same COMn phase.
Bit 0
LCDEN
: LCD Enable control
0: Disable
1: Enable
In the NORMAL, SLOW or IDLE mode, the LCD on/off function can be controlled
by this bit. However, in the SLEEP mode, the LCD function is always switched off.