SC9149AL Ver la hoja de datos (PDF) - Silan Microelectronics

Número de pieza

componentes Descripción

Fabricante

SC9149AL

INFRARED REMOTE CONTROL RECEIVER

Silan Microelectronics 

Silan

Semiconductors

SC9149A/SC9150A

5.INITIALIZATION

In order to initialize the internal status at time of power ON, it is necessary to perform the initialization.

The initialization is carried out when a capacitor is connected to the code bit terminal.

VDD

VDD

INITIALIZE

Rup

C2

C

Rup=20kΩ（Typical)

C=0.001µF~0.022µF

Rup

C3

C

NOTE: * In case of SC9149A series, connect a capacitor to C1 and C2.

* A capacitor for initialization is unnecessary for the terminal for which code bit “0” is selected. However,

code bit “0”, “0” can not be used. Either one terminal must be set at “H”.

6. EXPLANATION OF OUTPUT PULSE SP,HP,CP

6-1. SP1~SP5 (SINGLE PULSE)

SINGLE-SHOT

KEY ON

Tx OUT

12Bits

12Bits

LATCH STROBE

PULSE

SINGLE PULSE

OUTPUT

About 107msec

After checking 12-bits receiving data, if data agree and OK, single pulse is output.

Output is raised from “L” level to “H” level and returned again to “L” level after about 107msec.

6-2. HP1~HP5 (Hold pulse)

CONTINUOUS

KEY ON

Tx OUT

12Bits

12Bits

12Bits

12Bits

LATCH STROBE

PULSE

HOLD PULSE

OUTPUT

About

160msec

Hold pulse is output by the first latch strobe pulse after key ON. Output is kept at “H” level as long as continuous

signal is Input. When the key is released and continuous signal is stopped, about 160msec later, output is reversed

to “L” by the last latch strobe pulse. Further, HP1~HP5 are able to parallely and simultaneously maximum sextet

outputs at “H” level by continuous signal sent from the transmitter.

These outputs are optimum as outputs of REC-PLAY,REC-PAUSE, and CUE/REVIEW of tape deck.

HANGZHOU SILAN MICROELECTRONICS CO.,LTD.

Rev: 1.2 2003.01.21

7

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