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PDF SC9148B Data sheet ( Hoja de datos )
| Número de pieza | SC9148B | |
| Descripción | INFRARED REMOTE CONTROL TRANSMITTER USED TOGETHER | |
| Fabricantes | Silan Semiconductors | |
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SC9148B
INFRARED REMOTE CONTROL TRANSMITTER USED TOGETHER WITH
SC9149
DESCRIPTION
The SC9148B is CMOS LSI developed for use on the infrared remote
control transmitter. This LSI has 18 functions, and total 75 commands
can be transimitted : 63 commands by the continuous keys of multiple
keyings is possible and 12 commands by the single shot keys.
FEATURES
* Wide operating voltage range(VDD=2.2V ~ 5.0V)
* CMOS structure assures extremely low power dissipation
* Mulitiple keying is possible
* Less external parts
* Adaptable to other Models as Code Bits are available
* An oscillator can be constructed only by connecting an LC or
Ceramic Resonater as the oscillation circuit is housed.
ORDERING INFORMATION
Device
SC9148B
SC9148S
Package
DIP-16-300-2.54
SOP-16-225-1.27
BLOCK DIAGRAM
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:2.1 2005.12.15
Page 1 of 10
1 page  
SC9148B
5. CODE BITS(C1,C2,C3)
Code bit can be made at one terminal with diodes connected through T1 ~ T3 timing terminals .
CODE BIT
C1 C2
C3 C2
10
01
11
C1,C2 IS FOR SC9150A
C2,C3 IS FOR SC9149A
CODE BIT “0”,”0”CAN NOT
BE USED
Data of C1 , C2 and C3 code bit become “1”when diodes are connected to CODE Terminal through Timing
Signal Terminals T1 ~T3, and ‘0’when not connected . (In the above diagram , C1 , C2 and C3 are “1”, “1”and
“1”data . )
The SC9148P has 3 code bits . However , the SC9149P that is a receiving IC ( DIP 16 PIN ) and the SC9150P
(DIP 24 PIN ) are able to use only C2 and C3 , and C1 and C2 2 code bits , respectively .
Therefore , diodes must be connected so that code bit data of the SC9148P agreement with the receiving IC .
Note:For C3 and C1 code bit data not used on the SC9150P and SC9149P , it is necessary to transmit ‘1’and
diodes must be so connected .
6. TRANSMITTING WAVEFORM
6.1 BASIC TRANSMITTING WAVEFORM (at fosc=455kHz)
Basic transmitting waveform is 12-bits serial data in configuration as shown above.
The time of each bit “a”is decided as shown below by oscillation frequency fosc by means of XT and non-XT.
a=(1/fosc)×192(sec)
6.2 DISTINCTION OF BIT “0” AND “1”
One word of the above transmission command is in the configuration of (010100100100).
HANGZHOU SILAN MICROELECTRONICS CO.,LTD
Http: www.silan.com.cn
REV:2.1 2005.12.15
Page 5 of 10
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet SC9148B.PDF ] | |
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