HT1330 Holtek Semiconductor Inc, HT1330 Datasheet - Page 3

• Manufacturer Part Number: HT1330
• Description: 3 1/2 Digit Timer + Watch
• Manufacturer: Holtek Semiconductor Inc

Pin/Pad Description
Pin No.
11
14
16
17
18
20
24
25
26
27
28
29
30
31
33
34
35
36
37
38
39
46
47
4
5
6
8
9
10
Pad No.
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
Pad Name
S3
S2
S1
VEE
CAP2
CAP1
COM1
BC3
AG3
FE3
BC2
ADG2
FE2
COD3
BC1
AG1
FE1
KD1
COM2
OSC1
OSC2
BUSY
T2
T1
VSS
VDD
OP
BZ
BZB
I/O
I/O
I/O
¾
¾
¾
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
I
I
I
I
I
Input to start/stop the timer
Input for minute setting
Input for hour setting
Negative voltage supply for LCD display
For voltage doubling capacitor
For voltage doubling capacitor
Common 1 drive
Segment drive
Segment drive
Segment drive
Segment drive
Segment drive
Segment drive
Segment drive
Segment drive
Segment drive
Segment drive
Segment drive
Common 2 drive
Oscillator input
Oscillator output
Timer busy flag, active high
Chip test pin
Fast-test control pin
Negative power supply
Positive power supply
Option pin for countdown recycle
Piezo drive
Piezo drive
3
Description
August 10, 2000
HT1330