HT1330 Просмотр технического описания (PDF) - Holtek Semiconductor
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HT1330 Datasheet PDF : 8 Pages
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HT1330
Pin/Pad Description
Pin No. Pad No. Pad Name
11
1
S3
14
2
S2
16
3
S1
17
4
VEE
18
5
CAP2
20
6
CAP1
24
7
COM1
25
8
BC3
26
9
AG3
27
10
FE3
28
11
BC2
I/O
Description
I Input to start/stop the timer
I Input for minute setting
I Input for hour setting
¾ Negative voltage supply for LCD display
O For voltage doubling capacitor
O For voltage doubling capacitor
O Common 1 drive
O Segment drive
O Segment drive
O Segment drive
O Segment drive
29
12
ADG2
O Segment drive
30
13
FE2
O Segment drive
31
14
COD3
O Segment drive
33
15
BC1
O Segment drive
34
16
AG1
O Segment drive
35
17
FE1
O Segment drive
36
18
KD1
O Segment drive
37
19
COM2
O Common 2 drive
38
20
OSC1
I Oscillator input
39
21
OSC2
O Oscillator output
46
22
BUSY
O Timer busy flag, active high
47
23
T2
I/O Chip test pin
4
24
T1
I/O Fast-test control pin
5
25
VSS
¾ Negative power supply
6
26
VDD
¾ Positive power supply
8
27
OP
I Option pin for countdown recycle
9
28
BZ
O Piezo drive
10
29
BZB
O Piezo drive
3
August 10, 2000
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