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HT814D0 Datasheet(PDF) 2 Page - Holtek Semiconductor Inc

Part # HT814D0
Description  8.4-Second LOG-PCM Speech
PDF  15 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT814D0 Datasheet(HTML) 2 Page - Holtek Semiconductor Inc

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Pin Assignment
HT814D0
2
March 15, 2000
H T 8 1 4 D 0
20 D I P / S O P
KEY7
KEY8
KEY9
KEY1 0
KEY1 1
KEY1 2
NC
VD D
AU D
OS C 2
KEY6
KEY5
KEY4
KEY3
KEY2
KEY1
FL A G 2
VSS
FL A G 1
OS C 1
20
19
18
17
16
15
14
13
12
11
1
2
3
4
5
6
7
8
9
10
24
23
22
21
20
19
18
17
16
15
14
13
1
2
3
4
5
6
7
8
9
10
11
12
H T 8 1 4 D 0
24 D I P / S O P
KE Y7
KE Y8
KE Y9
KE Y1 0
KE Y1 1
KE Y1 2
NC
VD D
AU D
OS C 2
OS C 1
FL A G 1
KE Y6
KE Y5
KE Y4
KE Y3
KE Y2
KE Y1
NC
NC
NC
NC
FL A G 2
VS S
D ebounc e
Ci rc u i t
O n e- s h ot
K e y T abl e
O s c ill a t o r
Ci rc u i t
Ti m e B a s e
G e ne rat o r
Ta b l e R O M
50 8 ´ 14- bi t
DA C &
Ou t p u t
C o nt rol
Sp e e c h R O M
48 K ´ 6 - b i t
RO M
Ad d re s s
Co u n t e r
KEY 1
KEY 1 2
OS C 1
OS C 2
VD D
VSS
AU D
FL A G 1
S t a t u s
D i s pl ay
C ont rol l e r
FL A G 2



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