HT12A(2003) Ver la hoja de datos (PDF) - Holtek Semiconductor
Número de pieza
componentes Descripción
Fabricante
HT12A Datasheet PDF : 14 Pages
| |||
HT12A/HT12E
The transmitted information is as shown:
Pilot
A0
A1
A2
A3
A4
A5
A6
A7 AD8 AD9 AD10 AD11
&
Sync.
1
0
1
0
0
0
1
1
1
1
1
0
Address/Data Sequence
The following provides the address/data sequence table for various models of the 212 series of encoders.
Address/Data Bits
Part No.
0
1
2
3
4
5
6
7
8
9
10
11
HT12A
A0 A1 A2 A3 A4 A5 A6 A7 D8 D9 D10 D11
HT12E
A0 A1 A2 A3 A4 A5 A6 A7 AD8 AD9 AD10 AD11
Transmission Enable
For the HT12E encoders, transmission is enabled by applying a low signal to the TE pin. For the HT12A encoders,
transmission is enabled by applying a low signal to one of the data pins D8~D11.
Two Erroneous HT12E Application Circuits
The HT12E must follow closely the application circuits provided by Holtek (see the ²Application circuits²).
· Error: AD8~AD11 pins input voltage > VDD+0.3V
O SC2
VDD
O SC1
A D 11
TE
A D 10
VSS
AD9
AD8
12V
H T12E
· Error: The IC¢s power source is activated by pins AD8~AD11
12V
O SC2
VDD
O SC1
A D 11
TE
A D 10
AD9
VSS
AD8
H T12E
Rev. 1.10
7
January 24, 2003
Share Link: 