HT1612
Pad Coordinates
Unit: mil
P a d No.
X
Y
P a d No.
18
X
Y
P a d No.
35
X
Y
1
2
–61.92
–61.92
–61.92
–61.92
–61.92
–61.92
–61.92
–61.92
–61.92
–61.92
–61.92
–61.92
–61.92
–57.80
–45.90
–36.50
–28.86
41.65
33.98
26.30
17.85
10.95
3.17
–18.66
4.72
–60.80
–60.80
–60.80
–60.80
–60.46
–60.46
–60.80
–42.18
–33.98
–25.82
–17.66
–9.50
61.63
61.63
61.63
41.78
33.62
25.46
17.30
9.14
39.46
47.60
55.79
61.14
61.14
61.14
61.14
61.14
61.14
61.14
61.14
61.14
61.14
61.14
61.14
61.14
19
36
3
20
12.36
20
37
4
21
38
5
22
34.98
50.02
61.67
61.63
61.63
61.63
61.63
61.63
61.63
61.63
61.63
61.63
61.63
39
6
23
40
7
–4.53
–12.22
–19.96
–27.60
–35.26
–42.95
–52.26
–60.80
–60.80
–60.80
–60.80
24
41
8
25
42
9
26
43
0.98
10
11
12
13
14
15
16
17
27
44
–7.18
–15.34
–23.50
–31.66
–39.82
–47.98
–56.14
28
45
29
46
38
–1.34
47
39
6.80
48
31
14.98
49
32
23.14
50
33
31.30
Pad Description
In ter n a l
Con n ection
P a d Na m e
I/O
Descr ip t ion
SEG1~SEG30
COM1~COM3
O
O
CMOS OUT
CMOS OUT
LCD segement signal output pads
LCD common signal output pads
CMOS IN
Pull-High
Hook switch detector input
Active low
HK
I
X2
X1
O
I
OSCILLATOR 32768Hz crystal oscillator output
OSCILLATOR 32768Hz crystal oscillator input
CMOS IN
T2
I
Test pad (connected to VSS for production test)
Pull-High
CMOS IN
Pull-High
T1
I
O
I
Test pad (connected to VSS for production test)
INT
NMOS OUT Interrupt output, 8 or 16Hz by mask option
CMOS IN
Pull-Low
TIMER
Timer reset and start/hold toggle control input pad
3
5th J uly ’95
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
