GPLB31A

© Generalplus Technology Inc.

Proprietary & Confidential

13

JAN. 07, 2008

Version: 1.4

8. APPLICATION CIRCUITS

8.1. 2240 Dots LCD Driver, 70 Segments × 32 Commons with External Serial SRAM, Regulator Disabled - (1)

GPLB31A

LCD Panel (32x70)

PVDD

PVSS

AUDB

X32I

X32O

RESET

VDD

AUDA

VDD

7

VDD

VSS

SCK

SDA

CSB

PC1/SDA

PC0/SCK

PB0

VDD

GPRS512C

SEG0

SEG1

SEG14

SEG2

SEG15

PA1

PA2

PA3

PA4

PA5

.....

.....

.....

.....

.....

.....

V1

V2

V3

V4

VLCD

CUP1

CUP2

CUP3

CUP4

C

*3

1/5, 1/6 Bias

C

C

C

C

C

C

VROUT

*1

VDD

4.7

μF0.1μF

20pF

*2

20pF

*2

0.1

μF

30pF

Note*1: Pin VROUT should be connected to VDD if internal Regulator is disabled.

Note*2: These capacitor values are for design guidance only.

Different capacitor values may be required for different crystal/resonator used.

Note*3: The value of the capacitance(C) would range from 0.1

μF to 4.7μF to stable the output voltage.