LC75854W View Datasheet(PDF) - SANYO -> Panasonic

Part Name

Description

Manufacturer

LC75854W

1/4 Duty LCD Display Drivers with Key Input Function

SANYO -> Panasonic 

Sample Application Circuit 2

1/2 bias (for use with large panels)

LC75854E, 75854W

+5V

C ≥ 0.047 µF

10kΩ ≥ R ≥ 1 kΩ

*8

R

CR

OSC

VDD

VSS

TEST

VDD1

VDD2

COM1

COM2

COM3

COM4

P1/S1

P2/S2

P3/S3

P4/S4

S5

From the controller

To the controller

To the controller

power supply

*9

CE

CL

DI K K K K K

DO I I I I I

54321

S39

SS

44

10

//

KKKKKK

SSSSSS

654321

(P1) (general-purpose

(P2) output ports)

(P3) Used with the

(P4) backlight controller

or other circuit.

(S40)

(S41)

Key matrix

(up to 30 keys)

Note: *8.Add a capacitor to the power supply line so that the power supply voltage VDD rise time when power is applied and the power supply voltage VDD

fall time when power drops are both at least 1 ms, as the LC75854E/W is reset by the VDET.

*9.The DO pin, being an open-drain output, requires a pull-up resistor. Select a resistance (between 1 to 10 kΩ) appropriate for the capacitance of the

external wiring so that signal waveforms are not degraded.

No. 5066-20/25

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