
King Billion Electronics Co., Ltd
駿
億
電
子
股
份
有
限
公
司
HE84770D
HE80000 SERIES
3.
Functional Block Diagram
August 7, 2006
This specification is subject to change without notice. Please contact sales person for the latest version before use.
Page 3 of 29
V1.2
SEG
COM
FXI, FXO
LCD
Driver
LCD Power
Supply
8 Bit CPU
Fast Clock
OSC.
Slow Clock
OSC
2 MB ROM
16 KB RAM
TC1
TC2
TBI
WDT
SXI, SXO
PRTC, PRTD, PRT10,
PWM
PRT17
I/O Port
PWM
SGKY[43..24]
VO, DAO
Key Scan
DAC
OPO,OPIN, OPIP
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
3
3
3
3
3
3
3
3
3
3
4
4
4
4
4
4
4
4
4
4
5
5
5
5
5
5
5
5
5
5
6
6
6
6
6
6
6
6
6
6
7
7
7
7
7
7
7
7
7
7
8
8
8
8
8
8
8
8
8
8
9
9
9
9
9
9
9
9
9
9
1
1
1
1
1
1
1
1
1
109
110
111
113
114
116
117
119
120
122
123
125
126
128
129
131
132
134
135
137
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
SEG48
SEG45
SGKY43
SGKY42
SGKY40
SGKY39
SGKY37
SGKY36
SGKY34
SGKY33
SGKY31
SGKY30
SGKY28
SGKY27
SGKY25
SGKY24
PRT146
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
P
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
G
V
D
O
O
O
R
F
F
T
S
SXI
PRVDD
PRT106
PRT105
PRT103
PRT102
PRT100
PRTD7
PRTD5
PRTD2
GND_PWM
PRTC7
PRTC6
PRTC3
VDPRTC0
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
C
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
S
Pin Name
Pin # I/O
186~216
, 1 ~ 5
Description
SEG[79..44]
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’