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HT12M Datasheet

  • HT12M

  • Decoder Doorbell

  • 6頁(yè)

  • HOLTEK

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HT12M
2
12
Decoder Doorbell
Features
路
Operating voltage: 2.4V~5.0V
路
Built-in AMP
路
2channel dual tone generator
路
One Pin oscillator
路
Current type D/A Output
路
HT12E encoder pair with
路
Tone optional: Ding-Dong/Westminster tunes
路
16-pin DIP package
General Description
The main application area for the HT12M device is for
remote control doorbells working together with HT12E.
Containing all the functions of the Holtek HT12D de-
coder and with an added amplifier and melody genera-
tor, the device eliminates the need for customers to
incorporate an external op-amp and melody generator
IC within their product applications, in the process sig-
nificantly reducing overall product costs.
In addition to being fully compatible with the HT12D cir-
cuitry, the device includes the following features; inter-
nal Inverting AMP with can also operate as standard
independent inverter, internal 2 channel tone generator
and current type Audio output.
Block Diagram
O S C I
O s c illa to r
C ir c u it
A M P
C ir c u it
D iv id e r
T o n e
G e n e ra to r
A U D
T E S T
A M P
D IN
C o m p a ra to r
V S S
V D D
A d d re s s
C ir c u it
C o n tro l
C iir c u it
B U S Y
A 0
A 7
Pin Assignment
A 0
A 1
A 2
A 3
A 4
A 5
A 6
A 7
8
7
6
5
4
3
2
1
1 6
1 5
1 4
1 3
1 2
1 1
1 0
9
V D D
T E S T
V T
O S C I
A M P
D IN
A U D
V S S
H T 1 2 M
1 6 D IP -A
Rev. 1.00
1
March 25, 2002

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