LC75839PW Datasheet, PDF (16/27 Pages) Sanyo Semicon Device – 1/4 and 1/3-Duty General-Purpose LCD Display Driver

LC75839PW
(10) PF0 to PF3 … PWM output waveform frame frequency setting control data
These control data bits set the frame frequency of the PWM output waveforms. However, when the PWM output
function isn’t used, these control data bits become invalid. In addition, when the external clock operating frequency
is set the fCK2=38[kHz]typ (EXF="1") in external clock operating mode (OC= "1"), these control data bits become
invalid.
Control data
PWM output waveform frame frequency fp[Hz]
Internal oscillator operating mode
External clock operating mode
PF0
PF1
PF2
PF3
(The control data OC is 0,
(The control data OC is 1 and EXF is 0,
fosc=300[kHz] typ)
fCK1=300[kHz] typ)
0
0
0
0
fosc/1536
fCK1/1536
1
0
0
0
fosc/1408
fCK1/1408
0
1
0
0
fosc/1280
fCK1/1280
1
1
0
0
fosc/1152
fCK1/1152
0
0
1
0
fosc/1024
fCK1/1024
1
0
1
0
fosc/896
fCK1/896
0
1
1
0
fosc/768
fCK1/768
1
1
1
0
fosc/640
fCK1/640
0
0
0
1
fosc/512
fCK1/512
1
0
0
1
fosc/384
fCK1/384
0
1
0
1
fosc/256
fCK1/256
Note: When is setting (PF0,PF1,PF2,PF3)=(1,1,0,1) and (X,X,1,1), the frame frequency is same as frame
frequency at the time of the (PF0,PF1,PF2,PF3)=(1,0,1,0) setting (fosc/896, fCK1/896).
X: don’t care
No.A1953-16/27