SC9149AHN SILAN [Silan Microelectronics Joint-stock], SC9149AHN Datasheet - Page 7

• Manufacturer Part Number: SC9149AHN
• Description: INFRARED REMOTE CONTROL RECEIVER
• Manufacturer: SILAN [Silan Microelectronics Joint-stock]

5.INITIALIZATION
NOTE: * In case of SC9149A series, connect a capacitor to C1 and C2.
6. EXPLANATION OF OUTPUT PULSE SP,HP,CP
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.
6-2. HP1~HP5 (Hold pulse)
Output is raised from “L” level to “H” level and returned again to “L” level after about 107msec.
Hold pulse is output by the first latch strobe pulse after key ON. Output is kept at “H” level as long as continuous
These outputs are optimum as outputs of REC-PLAY,REC-PAUSE, and CUE/REVIEW of tape deck.
6-1. SP1~SP5 (SINGLE PULSE)
The initialization is carried out when a capacitor is connected to the code bit terminal.
After checking 12-bits receiving data, if data agree and OK, single pulse is output.
In order to initialize the internal status at time of power ON, it is necessary to perform the initialization.
* 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”.
CONTINUOUS
LATCH STROBE
HOLD PULSE
Silan
Semiconductors
OUTPUT
KEY ON
LATCH STROBE
SINGLE PULSE
Tx OUT
SINGLE-SHOT
PULSE
Tx OUT
OUTPUT
KEY ON
PULSE
HANGZHOU SILAN MICROELECTRONICS CO.,LTD.
12Bits
12Bits
V
DD
Rup
C2
12Bits
C
V
DD
Rup
C3
7
12Bits
SC9149A/SC9150A
C
C=0.001µF~0.022µF
Rup=20kΩ Typical)
INITIALIZE
12Bits
（
About 107msec
12Bits
160msec
About
Rev: 1.2
2003.01.21