Myalarm V-LCD1 Manual de usuario descargar pdf (Pagina 22)

Sample Application Circuit 1

1/3 Duty, 1/2 Bias (for use with normal panels)

Sample Application Circuit 2

1/3 Duty, 1/2 Bias (for use with large panels)

No. 7159-22/26

LC75813E, 75813T

From the

controller

C

DI

CL

CE

INH

VLCD2

VLCD1

VLCD

LCD panel (up to 261 segments)

VSS

COM4/S87

S86

S85

S9

P8/S8

P2/S2

P1/S1

COM3

COM2

Used for functions

such as backlight

control

General-purpose

output ports

(P8)

(P2)

(P1)

COM1

OSC

C ≥ 0.047µF

+5 V

*2

+3 V

VDD

From the

controller

Used for functions

such as backlight

control

General-purpose

output ports

(P8)

(P2)

(P1)

DI

CL

CE

INH

VLCD2

VLCD1

VLCD

VSS

COM4/S87

S86

S85

S9

P8/S8

P2/S2

P1/S1

COM3

COM2

COM1

OSC

VDD

C

10 kΩ ≥ R ≥ 1 kΩ

C ≥ 0.047 µF

+5 V

+3 V

*2

R

R

LCD panel (up to 261 segments)

Note: *2 When a capacitor except the recommended external capacitance (Cosc = 1000 pF) is connected the OSC pin, we recommend that applications

connect the OSC pin with a capacitor in the range 220 to 2200 pF.

Note: *2 When a capacitor except the recommended external capacitance (Cosc = 1000 pF) is connected the OSC pin, we recommend that applications

connect the OSC pin with a capacitor in the range 220 to 2200 pF.

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