LC75879PT_13 Datasheet, PDF (29/35 Pages) ON Semiconductor – LCD Display Driver

LC75879PT
Control data
Common/segment output waveform frame frequency fo[Hz]
FC0 FC1 FC2
Internal oscillator operating mode
(The control data OC is 0,
fosc=300[kHz] typ)
External clock operating mode
(The control data OC is 1
and EXF is 0, fCK1=300[kHz] typ)
External clock operating mode
(The control data OC is 1
and EXF is 1, fCK2=38[kHz] typ)
1
1
0
fosc/6144
fCK1/6144
fCK2/768
1
1
1
fosc/4608
fCK1/4608
fCK2/576
0
0
0
fosc/3072
fCK1/3072
fCK2/384
0
0
1
fosc/2304
fCK1/2304
fCK2/288
0
1
0
fosc/1536
fCK1/1536
fCK2/192
0
1
1
fosc/1152
fCK1/1152
fCK2/144
1
0
0
fosc/768
fCK1/768
fCK2/96
Note: When is setting (FC0,FC1,FC2)=(1,0,1), the frame frequency is same as frame frequency at the time of the
(FC0,FC1,FC2)=(0,0,0) setting (fosc/3072, fCK1/3072, fCK2/384).
PWM output port waveforms
P1/P4
(1)
P2
P3
P1/P4
(2)
P2
P3
P1/P4
(3)
P2
P3
(56/64)×Tp
(48/64)×Tp
(40/64)×Tp
(8/64)×Tp
(16/64)×Tp
(24/64)×Tp
(32/64)×Tp
(32/64)×Tp
(32/64)×Tp
Tp
(56/64)×Tp
(48/64)×Tp
(40/64)×Tp
(8/64)×Tp
(16/64)×Tp
(24/64)×Tp
(32/64)×Tp
(32/64)×Tp
(32/64)×Tp
Tp
1
Tp= _fp
VDD
VSS
VDD
VSS
VDD
VSS
VDD
VSS
VDD
VSS
VDD
VSS
VDD
VSS
VDD
VSS
VDD
VSS
Control data
W10 W11 W12 W13 W14 W15 W20 W21 W22 W23 W24 W25 W30 W31 W32 W33 W34 W35
1
1
1
0
1
1
1
1
1
1
0
1
1
1
1
0
0
1
1
1
1
0
0
0
1
1
1
1
0
0
1
1
1
0
1
0
1
1
1
1
1
0
1
1
1
1
1
0
1
1
1
1
1
0
PWM output
waveforms
(1)
(2)
(3)
No.A1687-29/35