LC75817NW View Datasheet(PDF) - SANYO -> Panasonic

Part Name

Description

Manufacturer

LC75817NW

1/8 to 1/10 Duty Dot Matrix LCD Display Controllers/Drivers with Key Input Function

SANYO -> Panasonic 

LC75817NE, 75817NW

Sample Application Circuit 1

1/8 duty, 1/4 bias drive technique (for use with normal panels)

+5V

*22

+8V

OPEN

CCC

C ≥ 0.047 µF

From the

controller

To the

controller

To the

controller

*25

power supply

LCD panel

VDD

TEST

VSS

VLCD

VLCD0

VLCD1

VLCD2

VLCD3

VLCD4 *23

OSCI

OSCO

COM1

COM2

COM3

COM4

COM5

COM6

COM7

COM8

COM9

S1

S2

S3

S4

S5

S6

S7

S8

S9

S10

OPEN

INH *24

CE

CL

DI K K K K K

DO I I I I I

54321

S56

S57

S58

S59

COM10/S60

KKKKKK

SSSSSS

P1

P2

P3

654321

P4

(general-purpose output ports)

used with the backlight controller

or other circuit

Key matrix

(up to 30 keys)

Notes: *22. Add a capacitor to the logic block power supply line so that the logic block power supply voltage VDD rise time when power is applied and the

logic block power supply voltage VDD fall time when power drops are both at least 1 ms, as the LC75817NE/NW is reset by the VDET.

*23. If a variable resistor is not used for display contrast fine adjustment, the VLCD4 pin must be connected to ground.

*24. If the function of INH pin is not used, the INH pin must be connected to the logic block power supply VDD.

*25. 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. 6144-31/43

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