Datasheet

Section 13 LCD Controller/Driver
Rev. 6.00 Aug 04, 2006 page 438 of 680
REJ09B0145-0600
13.2.3 LCD Control Register 2 (LCR2)
Bit
Initial value
Read/Write
7
DTS1
0
R/W
6
DTS0
0
R/W
5
CMX
0
R/W
4
SGX
0
R/W
3
SGS3
0
R/W
0
SGS0
0
R/W
2
SGS2
0
R/W
1
SGS1
0
R/W
LCR2 is an 8-bit read/write register which controls switching between the A waveform and B
waveform, and selects the duty cycle of the charge/discharge pulses which control disconnection
of the power supply split-resistance from the power supply circuit.
LCR2 is initialized to H'60 upon reset.
Bit 7: A waveform/B waveform switching control (LCDAB)
Bit 7 specifies whether the A waveform or B waveform is used as the LCD drive waveform.
Bit 7
LCDAB Description
0 Drive using A waveform (initial value)
1 Drive using B waveform
Bits 6 and 5: Reserved bits
Bits 6 and 5 are reserved; they are always read as 1 and cannot be modified.
Bit 4: Reserved bit
Bit 4 is reserved; it is always read as 0 and must not be written with 1.