GPL191B2

© Generalplus Technology Inc.

Proprietary & Confidential

5

Mar. 08, 2010

Version: 1.1

5. SIGNAL DESCRIPTIONS

Mnemonic

PIN No.

Type

Description

SEG3 - 0

SEG51 - 4

SEG63 - 52

4 - 1

54 - 101

37 - 48

O

LCD driver segment output. SEG59 - 52 can be re-assigned as IOAB7 - 0 bi-directional

I/O ports. Also, SEG60 - 63 can be re-assigned as IOCD0 - 3 bi-directional I/O port.

(mask option)

COM13 - 0

COM15 - 14

18 - 5

29 - 30

O

LCD driver common output. COM15 - 14 can be re-assigned as IOEF7 - 6 bi-directional

I/O port. (mask option)

IOEF3 - 0

33 - 36

I/O

Port EF is a bi-directional I/O port, can be software programmed as wake up I/O.

RxD

31

I

UART input, optioned to IOEF5.

TxD

32

O

UART output, optioned to IOEF4.

ROSC

28

I

ROSC input, connect to VDD through a resistor.

RESET

22

I

System reset input, low active.

AUDP

AUDN

50

51

O

PWM audio output.

X32I

25

I

32.768KHz crystal input or connects to VDD through a resistor. (option)

X32O

24

O

32.768KHz crystal output.

TEST

23

I

Test input

VLCD

26

P

LCD voltage. Connect to VSS through a capacitor if voltage doubler is enabled.

HVLCD

21

P

LCD voltage generation. Connect to VSS through a capacitor if voltage regulator is

enabled.

CUP1

CUP2

20

19

P

LCD voltage generation. Charge pump capacitor interconnection pins.

VDD

27

P

Power supply voltage input.

VSS

53

P

Ground reference.

PVDD

49

P

PWM driver power.

PVSS

52

P

PWM driver ground reference.

Legend: I = Input, O = Output, P = Power