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LC75829

1/4 and 1/3-Duty General-Purpose LCD Display Driver

ON Semiconductor 

LC75829PE, 75829PW

Display Control and the INH Pin

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 and Figure 6.)

• 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)

Undefined

Undefined

VIL1

tc

Display data and control

data transferred

VIL1

Defined

Defined

Undefined

Undefined

Internal data (D105 to D152)

Undefined

Defined

Undefined

Internal data (D153 to D208)

Undefined

[Figure 5]

Defined

Undefined

Notes: t1>1ms

t2>0

tc…10μs min

• 1/3 duty

t1

t2

VDD

INH

CE

Internal data

D1 to D54,PS10,PS11,

EXF,P0 to P2,DT,DN,

FC0 to FC2,OC,SC,BU

Internal data (D55 to D108)

Undefined

Undefined

Display data and control

data transferred

VIL1

tc

VIL1

Defined

Defined

Undefined

Undefined

Internal data (D109 to D159)

Undefined

[Figure 6]

Defined

Undefined

Notes: t1>1ms

t2>0

tc…10μs min

No.A1462-19/22

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