SC3010 View Datasheet(PDF) - Unspecified
Part Name
Description
Manufacturer
SC3010 Datasheet PDF : 15 Pages
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Silan
Semiconductors
SC3010
FUNCTIONAL DESCRIPTION
1. KEY INPUT OPERATION
A Key Input Operation may be considered legal or illegal depending on the keys pressed. For key interconnection
refer to the application circuit diagram in APPLICATION CIRCUIT SECTION. The maximum value of the switched
key contact series resistance is 7kΩ.
a). Legal Key Input
A legal key input operation enables the device to activate the corresponding codes. A key input operation is
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
An illegal key input operation does not produce any activity. No activity will be generated if 1) two or more K-
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
In the quiescent state, the command inputs KI0~KI7 are pulled HIGH by an internal pull-up transistor. Also if the
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
One Code
MSB
LSB MSB
LSB
Debounce Time Scan Start Bit
(16-Bit Time) Time
Control
(2-Bit Time)
Bit
System Bits
Command Bits
First Code
Repetition Time
Second Code
Where: debounce time+ scan time=18 bit-times, Repetition time=4x16 bit-times
Figure 1: Data Output Format
HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD
Rev: 2.1 2002-02-28
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