HT1612 Holtek Semiconductor, HT1612 Datasheet - Page 3

• Manufacturer Part Number: HT1612
• Description: Timer
• Manufacturer: Holtek Semiconductor

Pad Coordinates
Pad Description
SEG1~SEG30
COM1~COM3
HK
X2
X1
T2
T1
INT
TIMER
Pad No.
Pad Name
10
11
12
13
14
15
16
17
1
2
3
4
5
6
7
8
9
–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
X
I/O
O
O
O
O
I
I
I
I
I
OSCILLATOR 32768Hz crystal oscillator output
OSCILLATOR 32768Hz crystal oscillator input
Connection
CMOS OUT
CMOS OUT
NMOS OUT
CMOS IN
Pull-High
CMOS IN
Pull-High
CMOS IN
Pull-High
CMOS IN
–12.22
–19.96
–27.60
–35.26
–42.95
–52.26
–60.80
–60.80
–60.80
–60.80
Internal
Pull-Low
Y
41.65
33.98
26.30
17.85
10.95
–4.53
3.17
Pad No.
21
18
19
20
22
23
24
25
26
27
28
29
38
39
31
32
33
LCD segement signal output pads
Interrupt output, 8 or 16Hz by mask option
LCD common signal output pads
Hook switch detector input
Active low
Test pad (connected to VSS for production test)
Test pad (connected to VSS for production test)
Timer reset and start/hold toggle control input pad
–18.66
X
12.36
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
3
4.72
20
–60.80
–60.80
–60.80
–60.80
–60.46
–60.46
–60.80
–42.18
–33.98
–25.82
–17.66
Y
–9.50
–1.34
14.98
23.14
31.30
6.80
Description
Pad No.
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
–15.34
–23.50
–31.66
–39.82
–47.98
–56.14
X
61.63
61.63
61.63
41.78
33.62
25.46
17.30
–7.18
9.14
0.98
5th July ’95
HT1612
Unit: mil
Y
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