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PDF SC9200 Data sheet ( Hoja de datos )
| Número de pieza | SC9200 | |
| Descripción | DTMF GENERATORS | |
| Fabricantes | Silan Semiconductors | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de SC9200 (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
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SC9200
DTMF GENERATOR WITH MICRO-PROCESSOR INTERFACE
DESCRIPTION
The SC9200 tone generators are designed for µC interfaces. They can
be instructed by a µC to generate 16 dual tones and 8 single tones from
the DTMF pin. The SC9200A/AS provides a serial mode whereas the
SC9200B/BS contains a selectable serial/parallel mode interface for
various applications
DIP-8
SOP-8
FEATURES
* Operating voltage: 2.0V~5.5V
* Serial mode for the SC9200A/AS
* Serial/parallel mode for the SC9200B/BS
* Low standby current
* Low total harmonic distortion
* 3.58MHz crystal or ceramic resonator
APPLICATIONS
* Security systems
* Home automation
* Remote control through telephone lines
* Communication system, etc.
DIP-14
SOP-14
ORDERING INFORMATION
Part No.
SC9200A
SC9200B
SC9200AS
SC9200BS
Package
DIP-8-300-2.54
DIP-14-300-2.54
SOP-8-225-1.27
SOP-14-225-1.27
BLOCK DIAGRAM
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:2.0 2004.08.03
Page 1 of 10
1 page  
SC9200
Figure 1
2. Parallel mode (SC9200B/BS)
The SC9200B/BS provides four data inputs D0~D3 to generate their corresponding DTMF signals. The S/P
has to be connected high to select the parallel operation mode. Then the input data codes should be
determined. Finally, the CE is connected low to transmit the DTMF signal from the DTMF pin.
The TDE time (about 6ms) will be delayed from the CE falling edge to the DTMF signal output.
The relationship between the digital codes and the tone output frequency is illustrated in Table 2. As for the
control timing diagram, see Fiigure 2.
When the system is operating in the parallel mode, D0~D3 are all in the floating state. Thus, these data
input pins should not float.
Table 2: Digits vs. input data vs. tone output frequency (parallel mode)
Digit D3 D2 D1 D0
1 0001
2 0010
3 0011
4 0100
5 0101
6 0110
7 0111
8 1000
9 1001
0 1010
* 1011
# 1100
A 1101
B 1110
C 1111
D 0000
Tone Output Frequency
697+1209
697+1336
697+1477
770+1209
770+1336
770+1477
852+1209
852+1336
852+1477
941+1336
941+1209
941+1477
697+1633
770+1633
852+1633
941+1633
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:2.0 2004.08.03
Page 5 of 10
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet SC9200.PDF ] | |
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