Silan Semiconductors SC9314 224 OTP ENCODER DESCRIPTION The SC9314 is CMOS LSI encoder designed for remote control system applications. It encodes 24 bits of information and then serially transmits it via the DOUT pin upon receipt of transmission enable (DATA pins: D0~D3) signals. The combination of address and bits of the SC9314 is designed by a one-time programmable process. The chip, in addition, offers various packaging for flexible combination of programmable address/data so as to meet various applications. Its programmable address/data is transmitted together DIP-14 with the anti-code bits via RF or infrared transmission medium upon receipt of a trigger signal. FEATURES * Operating voltage: 2V~12V APPLICATIONS * Low power consumption * Burglar alarm system * Built-in oscillator needs only 5% resistor * Smoke and fire alarm system * 0/2/4/8 data selectable * Garage door controllers 24 * 2 maximum address and data codes * Car door controllers * Easy interface with RF or IR medium * Security system * One-time programmable * Cordless telephones * Data active: D0~D3 * Other remote control systems * Minimal external components PIN CONFIGURATION 14 D2 VSS 2 13 D1 OSC1 3 12 D0 OSC2 4 DOUT 5 SC9314 D3 1 11 VDD 10 NC NC 6 9 NC NC 7 8 NC HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD Rev: 1.0 1 2001.04.15 Silan Semiconductors SC9314 BLOCK DIAGRAM OSC1 Address Counter Oscillator OSC2 Mixer & Driver Control Unit DOUT Data Latch D0 D3 Note: Address/Data number are available in various combinations, refer to functional description. ABSOLUTE MAXIMUM RATING Characteristic Symbol Value Unit V Supply Voltage VDD 0.3~12 Input Voltage VIN 0.3~ VDD +0.3 V Storage temperature TSTG -50 ~ 125 °C Operating Temperature TOPR -20 ~ 70 °C ELECTRICAL CHARACTERISTICS (VDD =5.0V, TA=25°C) Parameter Symbol Test conditions VDD Condition Operating Voltage VDD Standby Current ISTB 12V Oscillator stops Operating Current IDD 12V No load FOSC=3KHz H Input Voltage VIH L Input Voltage VIL D0~D7 Pull-High Resistance RPH Source Output Current IDOUT Sink Oscillator Frequency FOSC Min Typ 2 Max Unit 12 V 1 2 A 200 400 A 0.8 VDD VDD V 0 0.2VDD V 12V 150 300 k 5V 0.9VDD 2 5 mA 12V 0.9VDD 6.5 15 mA 5V 0.1VDD 2 5 mA 12V 0.1VDD 6 15 mA 12V ROSC=1.4M 3 kHz HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD Rev: 1.0 2 2001.04.15 Silan Semiconductors SC9314 PIN DESCRIPTION Pin No. 14 1~3 Symbol I/O D0~D3 I Internal Connection Description Data input and transmission enable (active low). CMOS IN Pull-High They can be externally set to VSS or left open. 4 VSS I 9 OSC2 O OSCILLATOR Oscillator output pin Negative power supply (GND) 10 OSC1 I OSCILLATOR Oscillator output pin 11 DOUT O CMOS OUT Data serial transmission output 12 VDD I Positive power supply APPROXIMATE INTERNAL CONNECTION CIRCUIT CMOS IN/OUT CMOS OUT CMOS IN Pull-high OSCILLATOR FUNCTIONAL DESCRIPTION Normal operation The SC9314 encodes and transmits address/data to a decoder upon receipt of a trigger signal. The address codes of SC9314 are always being transmitted as long as power (VDD) is supplied. The transmission function of the SC9314 is enabled by the D0~D3 pins (active low). The following is the transmission of the SC9314. Do~D3 <1 word >1 word Ebcider DOUT Transmission timing A complete code word of the SC9314 consists of 3 periods as shown below. FOSC 1 clock DOUT pilot period (23 clocks) 1/3 bit (A0~A19,60clocks) address code period (D3~D0, 12clocks) data code period 0 1 0 1 anti-code period (4 bits) A complete code word for the SC9314 HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD Rev: 1.0 3 2001.04.15 Silan Semiconductors SC9314 The SC9314 detects the logic state of the internal programmed address and the external data pins, and then transmits the detected information during the code period. Each address/data bit can be set to one of the following two logic states: FOSC 1 0 address/ data bit Flowchart Power on Standby mode Yes No Transmission enabled? Yes Address/data words transmitted No Transmission still enabled? Yes Address/data words transmitted continuously HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD Rev: 1.0 4 2001.04.15 Silan Semiconductors SC9314 TYPICAL APPLICATION CIRCUITS Tramsmitter Circuit Tramsmitter Circuit 1 D3 D1 13 2 VSS D1 13 3 OSC1 D0 12 3 OSC1 D0 12 Rosc=1.4M 4 OSC2 5 DOUT 12V D2 14 Rosc=1.4M 4 OSC2 VDD 11 LED NC 10 5 DOUT SC9314 D2 14 2 VSS SC9314 1 D3 12V 100 VDD 11 0.1 NC 10 6 NC NC 9 6 NC NC 9 7 NC NC 8 7 NC NC 8 Note: In order to prevent the IC from being damaged owing to the latch up, the 100 resistor or the LED which also can be a transmission indicator is indispensable when VDD=9V~12V. PACKAGE OUTLINE DIP-14-300-2.54 UNIT: mm 7.62 6.40 0.25 2.54 1.50 15 degree 3.30 5.08 3.51 19.4 0.46 HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD Rev: 1.0 5 2001.04.15