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13.2.3
LCD Control Register 2 (LCR2)
Bit
LCDAB
Initial value
Read/Write
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
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.
330
7
6
5
—
—
0
1
1
—
—
4
3
—
CDS3
CDS2
0
0
R/W
R/W
R/W
2
1
0
CDS1
CDS0
0
0
0
R/W
R/W
(initial value)
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