GPL191B2

© Generalplus Technology Inc.

Proprietary & Confidential

12

Mar. 08, 2010

Version: 1.1

8. APPLICATION CIRCUITS

8.1. 960 Points LCD Driver, 60 Segments × 16 Commons

RESET

ROSC

X32I

X32O

VDD

SEG59

PVSS

AUDN

PVDD

AUDP

RxD/IOEF5

TxD/IOEF4

IOEF0

IOEF1

IOEF2

IOEF3

IOCD3

IOCD2

IOCD1

IOCD0

SEG34

SEG33

SEG8

SEG22

SEG32

SEG31

SEG30

SEG29

SEG28

SEG27

SEG26

SEG25

SEG24

SEG23

SEG21

SEG20

SEG19

SEG18

SEG17

SEG16

SEG15

SEG14

SEG13

SEG12

SEG11

SEG10

SEG9

RxD

TxD

CUP1

CUP2

HVLCD

VLCD

Rsys

Note1:

IOEF4, IOEF5 are shared with TxD, RxD(UART), if UART is not used, these two pins can be used as I/O ports

Note2:

These capacitors must be connected if voltage doubler and voltage regulator are used.

Note3:

Wire route path from capacitors (C6 - 1) to chip should be as close as possible.

Note4:

If voltage doubler and voltage regulator are not used, VLCD should be connected to VDD.

Note5:

C7, C8 and crystal should be placed as close as possible to X32I and X32O. A shielding by ground is suggested.

Note6:

The value of C7 and C8 are for design guidance only. Different capacitor values may be required for different crystal/resonator used.

Note7:

The capacitor value of C1 is from 30pF to 200pF, according to system noise level.