SC3010S ETC [List of Unclassifed Manufacturers], SC3010S Datasheet - Page 4

• Manufacturer Part Number: SC3010S
• Description: INFRARED REMOTE CONTROL TRANSMITTER
• Manufacturer: ETC [List of Unclassifed Manufacturers]

FUNCTIONAL DESCRIPTION
1. KEY INPUT OPERATION
refer to the application circuit diagram in APPLICATION CIRCUIT SECTION. The maximum value of the switched
key contact series resistance is 7k .
a). Legal Key Input
considered as legal if it is 1). a connection of one K-Input (KI0~KI7) to one K-Output (KO0~KO7), or 2).a connection
of one C-Input(C0~C3) to one K-Output (KO0~KO7) when the System Mode Selection (SMS) Pin is in a LOW state.
If the SMS is in a HIGH state, then a wired connection must be made between a C-Input to a K-Output in order to
generate the system number. For connections consisting of one K-Input or C-Input to more than one K-Output Pins,
the last scan signal is recognized as LEGAL.
b). Illegal Key Input
Input/C-Input Pins or 2) C-Input and K-Input Pins are activated simultaneously. The oscillator will not start. Thus, this
operation is considered as ILLEGAL.
2. INPUTS: KI0~KI7 & C0~C3
system is quiescent and the System Mode Selection Input (SMS) is in High state so that current flow may be
prevented. A wired connection in the C-KO Matrix provides 32 systems.
3. DATA OUTPUT
A Key Input Operation may be considered legal or illegal depending on the keys pressed. For key interconnection
A legal key input operation enables the device to activate the corresponding codes. A key input operation is
An illegal key input operation does not produce any activity. No activity will be generated if 1) two or more K-
In the quiescent state, the command inputs KI0~KI7 are pulled HIGH by an internal pull-up transistor. Also if the
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Semiconductors
Where: debounce time+ scan time=18 bit-times, Repetition time=4x16 bit-times
Debounce Time
(16-Bit Time)
First Code
Scan
Time
(2-Bit Time)
Repetition Time
Start Bit
Figure 1: Data Output Format
Control
Bit
MSB
4
System Bits
One Code
Second Code
LSB MSB
Command Bits
SC3010
LSB
Rev: 2.1
2002-02-28