King Billion Electronics Co., Ltd

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HE84770

HE80000 SERIES

August 25, 2003

Page 3 of 30

V2.6E

This specification is subject to change without notice. Please contact sales person for the latest version before use.

3. Functional Block Diagram

SEG

FXI, FXO

COM

LCD

Driver

8 Bit CPU

Fast Clock

OSC.

2 MB ROM

SXI, SXO

LCD Power

Supply

Slow Clock

OSC

16 KB RAM

PRTC, PRTD, PRT10,

PWM

PRT17

I/O Port

TC1

PWM

SGKY[43..24]

TC2

VO, DAO

Key Scan

DAC

TBI

OPO,OPIN, OPIP

WDT

OP Amp

4. Pin Description

HE84770

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

SEG48

SEG47

SEG46

SEG45

SEG44

SGKY43

SGKY42

SGKY41

SGKY40

SGKY39

SGKY38

SGKY37

SGKY36

SGKY35

SGKY34

SGKY33

SGKY32

SGKY31

SGKY30

SGKY29

SGKY28

SGKY27

SGKY26

SGKY25

SGKY24

PRT147

PRT146

PRT145

PRT144

SXI

VDD

PRT107

PRT106

PRT105

PRT104

PRT103

PRT102

PRT101

PRT100

PRTD7

PRTD6

PRTD5

PRTD4

PRTD3

PRTD2

PRTD1

PRTD0

GND_PWM

PWM

PRTC7

PRTC6

PRTC5

PRTC4

PRTC3

PRTC2

PRTC1

PRTC0

VDD_RAM

Pin Name

Pin # I/O

Description

SEG[79..44]

186~216

, 1 ~ 5

O LCD segment SEG[79..44] driver outputs.

SGKY[43..24] 6 ~ 25

O

LCD segments share pads with key scan out SCNO[19..0]. The key scan function of

these pins can be disabled by mask option clearing MO_LCDKEY to ‘0’, then

SGKY[43..24] function as LCD segment driver only. Setting MO_LCDKEY to ‘1’