King Billion Electronics Co., Ltd.
HE89C21
駿 億 電 子 股 份 有 限 公 司
HE80000 SERIES
Pad No.
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
Pad Name X Coord.
Y Coord.
-160.5
Pad No.
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
Pad Name X Coord.
Y Coord.
184.5
SEG[27]
SEG[26]
SEG[25]
SEG[24]
SEG[23]
SEG[22]
SEG[21]
SEG[20]
SEG[19]
SEG[18]
SEG[17]
SEG[16]
SEG[15]
SEG[14]
SEG[13]
SEG[12]
SEG[11]
SEG[10]
SEG[9]
-977.5
LV1
977.5
977.5
977.5
977.7
977.5
977.5
977.5
977.5
805
-977.5
-977.5
-977.5
-977.5
-977.5
-977.5
-977.5
-862.5
-747.5
-632.5
-517.5
-402.5
-287.5
-172.5
-57.5
-275.5
-390.5
-505.5
-620.5
-735.5
-850.5
-989.5
-989.5
-989.5
-989.5
-989.5
-989.5
-989.5
-989.5
-989.5
-989.5
-989.5
-989.5
-989.5
-989.5
-989.5
-989.5
-989.5
LV2
299.5
414.5
529.5
644.5
759.5
874.5
989.5
989.5
989.5
989.5
989.5
989.5
989.5
989.5
989.5
989.5
989.5
989.5
989.5
989.5
989.5
989.5
LV3
GND
RSTP_N
FXO
FXI
TSTP_P
SXO
SXI
690
VDD
575
MUTE
DTMFO
PRTD[7]
PRTD[6]
PRTD[5]
PRTD[4]
PRTD[3]
PRTD[2]
PRTD[1]
PRTD[0]
PRTC[7]
PRTC[6]
460
345
230
115
0
57.5
-115
-230
-345
-460
-575
-690
-805
172.5
287.5
402.5
517.5
632.5
747.5
862.5
SEG[8]
SEG[7]
SEG[6]
SEG[5]
SEG[4]
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
0.1uF
LV2
LV1
LC2
LC1
104
0.1uF
0.1uF
MO_LVRG Function
0
1
Disable LCD regulator
Enable LCD regulator
January 20, 2003
5
V1.0E
KB [ King blillion Electronics Co.,Ltd. ]
