Hitachi HD6473867 Hardware Manual page 343

2. Software settings
a. Duty selection
Any of four duty cycles—static, 1/2 duty, 1/3 duty, or 1/4 duty—can be selected with bits
DTS1 and DTS0.
b. Segment selection
The segment drivers to be used can be selected with bits SGS
c. Frame frequency selection
The frame frequency can be selected by setting bits CKS
should be selected in accordance with the LCD panel specification. For the clock
selection method in watch mode, subactive mode, and subsleep mode, see 13.3.6,
Operation in Power-Down Modes.
d. A or B waveform selection
Either the A or B waveform can be selected as the LCD waveform to be used by means of
LCDAB.
e. LCD drive power supply selection
When the on-chip power supply circuit is used, the power supply to be used can be
selected with the SUPS bit. When an external power supply circuit is used, select V
with the SUPS bit and turn the LCD drive power supply off with the PSW bit.
to CKS
3
338
to SGS .
3 0
. The frame frequency
0
CC