King Billion Electronics Co., Ltd
HE84770
駿 億 電 子 股 份 有 限 公 司
HE80000 SERIES
3.Functional Block Diagram
LCD
Fast Clock
OSC.
SEG
FXI, FXO
8 Bit CPU
COM
Driver
LCD Power
Supply
2 MB ROM
16 KB RAM
TC1
Slow Clock
OSC
SXI, SXO
PWM
PRTC, PRTD, PRT10,
PRT17
I/O Port
PWM
DAC
TC2
SGKY[43..24]
VO, DAO
OPO,OPIN, OPIP
Key Scan
TBI
OP Amp
WDT
4.Pin Description
1
SEG48
2
137
136
135
134
133
132
131
130
129
128
127
126
125
124
123
122
121
120
119
118
117
116
115
114
113
112
111
110
109
SEG47
3
VDD_RAM
SEG46
4
PRTC0
PRTC1
PRTC2
PRTC3
PRTC4
PRTC5
PRTC6
PRTC7
PWM
SEG45
5
SEG44
6
SGKY43
7
SGKY42
8
SGKY41
9
SGKY40
10
SGKY39
11
SGKY38
12
SGKY37
13
GND_PWM
PRTD0
PRTD1
PRTD2
PRTD3
PRTD4
PRTD5
PRTD6
PRTD7
PRT100
PRT101
PRT102
PRT103
PRT104
PRT105
PRT106
PRT107
VDD
SGKY36
14
SGKY35
15
SGKY34
16
HE84770
SGKY33
17
SGKY32
18
SGKY31
19
SGKY30
20
SGKY29
21
SGKY28
22
SGKY27
23
SGKY26
24
SGKY25
25
SGKY24
26
PRT147
27
PRT146
28
PRT145
29
PRT144
SXI
Pin Name
Pin # I/O
Description
186~216
SEG[79..44]
O LCD segment SEG[79..44] driver outputs.
, 1 ~ 5
LCD segments share pads with key scan out SCNO[19..0]. The key scan function of
SGKY[43..24] 6 ~ 25 O 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’
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.
KB [ King blillion Electronics Co.,Ltd. ]
