King Billion Electronics Co., Ltd.

駿

億

電

子

股

份

有

限

公

司

HE89C21

HE80000 SERIES

January 20, 2003

5

V1.0E

Pad No.

Pad Name

X Coord.

Y Coord.

Pad No.

Pad Name

X Coord.

Y Coord.

11

SEG[27]

-977.5

-160.5

45

LV1

977.5

184.5

12

SEG[26]

-977.5

-275.5

46

LV2

977.5

299.5

13

SEG[25]

-977.5

-390.5

47

LV3

977.5

414.5

14

SEG[24]

-977.5

-505.5

48

GND

977.7

529.5

15

SEG[23]

-977.5

-620.5

49

RSTP_N

977.5

644.5

16

SEG[22]

-977.5

-735.5

50

FXO

977.5

759.5

17

SEG[21]

-977.5

-850.5

51

FXI

977.5

874.5

18

SEG[20]

-977.5

-989.5

52

TSTP_P

977.5

989.5

19

SEG[19]

-862.5

-989.5

53

SXO

805

989.5

20

SEG[18]

-747.5

-989.5

54

SXI

690

989.5

21

SEG[17]

-632.5

-989.5

55

VDD

575

989.5

22

SEG[16]

-517.5

-989.5

56

MUTE

460

989.5

23

SEG[15]

-402.5

-989.5

57

DTMFO

345

989.5

24

SEG[14]

-287.5

-989.5

58

PRTD[7]

230

989.5

25

SEG[13]

-172.5

-989.5

59

PRTD[6]

115

989.5

26

SEG[12]

-57.5

-989.5

60

PRTD[5]

0

989.5

27

SEG[11]

57.5

-989.5

61

PRTD[4]

-115

989.5

28

SEG[10]

172.5

-989.5

62

PRTD[3]

-230

989.5

29

SEG[9]

287.5

-989.5

63

PRTD[2]

-345

989.5

30

SEG[8]

402.5

-989.5

64

PRTD[1]

-460

989.5

31

SEG[7]

517.5

-989.5

65

PRTD[0]

-575

989.5

32

SEG[6]

632.5

-989.5

66

PRTC[7]

-690

989.5

33

SEG[5]

747.5

-989.5

67

PRTC[6]

-805

989.5

34

SEG[4]

862.5

-989.5

6. LCD Power Supply

The LCD power supply is equipped with input power regulator, voltage Tripler, and bias voltage

generating resistor network. The input power of MCU is regulated and multiplied by 3 times to generate

LV3 to generate the stable driving voltages for LCD driver. The bias voltages for LCD driver are then

generated from LV3 using the internally resistor voltage dividing network. With the regulated LCD power,

the LCD display can give steady visual effect over a wide range of operating voltage. The built-in

regulator must be enabled by mask option MO_ LVRG to function.

LV3

LV2

LV1

LC2

LC1

104

0.1uF

0.1uF

0.1uF

MO_LVRG Function

0

Disable LCD regulator

1

Enable LCD regulator