三合微科股份有限公司 SM5212D SAMHOP Microelectronics Corp. 212 RF DECODER DESCRIPTION FEATURES SM5212D is a remote control decoder paired with SM5212E utilizing CMOS Technology. It has 12-bit 2-state address pins providing a 2 12 address codes; thereby, drastically reducing any code collision and unauthorized code scanning possibilities. SM5212D is available in several options to suit every application needs : variable number of data output pins, latch or momentary output type. CMOS Technology Low Power Consumption Very High Noise Immunity Up to 12 2-State Code Address Pins Wide Range of Operating Voltage: Vcc = 3 ~ 12 Volts * Single Resistor Oscillator * Available in DIP and SOP Package * * * * * APPLICATIONS * * * * * Car Security Garage Door Home Security/Automation System Toys Remote Control for Industrial Use PIN CONFIGURATION ( DIP ) A0 1 18 Vcc NC 1 20 NC A1 2 17 VT A0 2 19 Vcc A2 3 16 OSC1 A1 3 18 VT A3 4 15 OSC2 A2 4 17 OSC1 A4 5 14 DIN A3 5 16 OSC2 A5 6 13 A11/D0 A4 6 15 DIN A6 7 12 A10/D1 A5 7 14 A11/D0 A7 8 11 A9/D2 A6 8 13 A10/D1 Vss 9 10 A8/D3 A7 9 12 A9/D2 Vss 10 11 A8/D3 SM5212D SM5212D-S Page 1 V1.0 三合微科股份有限公司 SM5212D SAMHOP Microelectronics Corp. 212 RF DECODER BLOCK DIAGRAM OSC2 OSC1 Oscillator DIN Buffer Divider Data Shift Register .. .. Latch Circuit .. .. Data Data Detector Sync. Detector Comparator Comparator Control Logic Buffer Transmission Gate Circuit VT . . . . . . . . . . Address VDD Page 2 VSS V1.0 三合微科股份有限公司 SM5212D SAMHOP Microelectronics Corp. 212 RF DECODER PIN DESCRIPTION NO. PIN NAME I/O 1 A0 I 2 A1 I 3 A2 I 4 A3 I Address input , each pin can be 5 A4 I set to "0' , "1". 6 A5 I 7 A6 I 8 A7 I 9 VSS POWER 10 D3 O 11 D2 O FUNCTION Negative power supply. Address/Data output active high. 12 D1 O 13 D0 O 14 DI I Receive from RF module. 15 OSC1 I 16 OSC2 O Resistor connected between these two pins determine the system clock. 17 VT O Valid transmission indication. 18 VDD POWER Positive power supply. Page 3 V1.0 三合微科股份有限公司 SM5212D SAMHOP Microelectronics Corp. 212 RF DECODER Decoder with Data Output Pins After Power On SM5212D is set in Power On Address search mode, if SM5212D finds 3 consecutive Address that matches the Standby Mode Address setting of SM5212D. SM5038RF will enter Data Compare NO Code In? Disable VT & ignore the rest of this word YES Address Bits Matched? mode. It will compare perviously 3 received data, if they match then SM5212D will set VT high and send data NO O/P. YES Store Data Match previous stored data? NO YES NO 3 times of checking completed ? YES Latch data to output & activate VT NO Address or data error? YES Page 4 V1.0 三合微科股份有限公司 SM5212D SAMHOP Microelectronics Corp. 212 RF DECODER Single Resistor Oscillator SM5212D's oscillator can be constructed by connecting a resistor between OSC1 and OSC2 pin. Encoder OSC Frequency KHz 350 300 43K 51K 250 68K 200 82K 100K 150 150K 180K 100 50 0 3 4 5 6 7 8 9 10 11 12 VOLTAGE ~ FOSCD (SM5212E The recommended oscillator frequency is FOSCD (SM5212D decoder)=10 encoder) Page 5 V1.0 三合微科股份有限公司 SM5212D SAMHOP Microelectronics Corp. 212 RF DECODER ABSOLUTE MAXIMUM RATINGS Ratings Unit VI - Vss -0.3~13 V Vss - VDD Vss-0.3~VDD+0.3 V Operating Temperature Topr -20~75 oC Storage Temperature Tstg -50~125 oC Parameter Supply Voltage Input Voltage Conditions Symbol VDD - Vss = 12V DC ELECTRICAL CHARACTERISTICS (Ta=25 oC) PARAMETER SYMBOL Operating Voltage VDD Standby Current ISTB CONDITIONS LIMIT UNIT MIN. TYP. MAX. 2.4 5 12 VDD=5V OSC stop - 0.1 1 VDD=12V OSC stop - 2 4 µA µA V Operating Current IDD VDD=5V No load Fosc=150kHz - 200 400 µA Data Output Source Current (D8~D11) IO VDD=5V VOH=4.5V -1 -1.6 - mA Data Output Sink Current (D8~D11) IO VDD=5V VOL=0.5V 1 1.6 - mA IVT VDD=5V VOH=4.5V VDD=5V VOL=0.5V -1 -1.6 - mA 1 1.6 - mA VT Output Source Current VT Output Sink Current "H" Input Voltage VIH - (VDD=5V) 3.5 - 5 V "L" Input Voltage VIL - (VDD=5V) 0 - 1 V - 150 - kHz Oscillator Frequency FOCS VDD=5V ROSC=51k Ω Page 6 V1.0 三合微科股份有限公司 SM5212D SAMHOP Microelectronics Corp. 212 RF DECODER APPLICATION CIRCUIT RF Receiver VDD A0 VDD A1 VT A2 OSC1 A3 OSC2 A4 DIN A5 D0 A6 D1 A7 D2 VSS D3 VT ROSC SM5212D Page 7 V1.0 三合微科股份有限公司 SM5212D SAMHOP Microelectronics Corp. 212 RF DECODER ORDERING INFORMATION Part NO. Package SM5212D 18Pin DIP Part NO. Package SM5212D-S 20Pin SOP Logo Product No. D:DIP TYPE D-S:SO Package SM5212 XX xxx xx Serial Number Date Code ESD Protection Mark Page 8 V1.0