LC75839PW Datasheet, PDF (24/27 Pages) Sanyo Semicon Device – 1/4 and 1/3-Duty General-Purpose LCD Display Driver

Display Control and the INH Pin
LC75839PW
Since the LSI internal data (1/4 duty : the display data D1 to D208 and the control data, 1/3 duty : the display data D1 to
D159 and the control data) is undefined when power is first applied, applications should set the INH pin low at the same
time as power is applied to turn off the display (This sets the S1/P1 to S4/P4, S5 to S50, COM1 to COM3, COM4/S51,
S52, and S53/OSCI pins to the VSS level.) and during this period send serial data from the controller. The controller
should then set the INH pin high after the data transfer has completed. This procedure prevents meaningless display at
power on.
(See Figure 5, Figure 6.)
(1)1/4 duty
t1
t2
VDD
INH
CE
D1 to D52,PS10,PS11,
Internal data _{EXF,P0 to P2,DT,DN,}
FC0 to FC2,OC,SC,BU
Internal data
D53 to D104,PS2 to PS4,
PF0 to PF3
Internal data
D105 to D152,W10 to W15,
W20 to W25, W30 to W35
Undefined
Undefined
Undefined
Internal data (D153 to D208)
Undefined
VIL1
tc
Display data and control
data transferred
VIL1
Defined
Undefined
Defined
Undefined
Defined
Undefined
[Figure 5]
Defined
Undefined
Notes: t1>1ms
t2>0
tc…10μs min
(2)1/3 duty
t1
t2
VDD
INH
CE
D1 to D54,PS10,PS11,
Internal data _{EXF,P0 to P2,DT,DN,}
FC0 to FC2,OC,SC,BU
Internal data
D55 to D108,PS2 to PS4,
PF0 to PF3
Internal data
D109 to D159,W10 to W15,
W20 to W25, W30 to W35
Undefined
Undefined
Undefined
Display data and control
data transferred
VIL1
tc
VIL1
Defined
Undefined
Defined
Undefined
[Figure 6]
Defined
Undefined
Notes: t1>1ms
t2>0
tc…10μs min
No.A1953-24/27