SM5028RF

SM5028RF SAMHOP Microelectronics Corp. 212 RF ENCODER GENERAL DESCRIPTION SM5028RF is a RF remote control encoder paired with SM5038RF. It utilizes CMOS technology. The chip has 12 bits of 2-state address pins that provides 212 codes. SM5028RF/SM5038RF pair is suitable for use on remote controller. FEATURES * * * * * CMOS technology Low power consumption Wide range operating voltage, Vcc = 2.4~12V Up to four data bits High noise immunity APPLICATION * * * * * * Car Security Garage Door Ceiling Fan Home Security/Automatic Toys Wireless doorbell PIN ASSIGNMENTS (TOP VIEW) A0 A1 A2 A3 A4 A5 A6 A7 Vss 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10 SM5028RF VDD Dout OSC1 OSC2 TE A11/D0 A10/D1 A9/D2 A8/D3 NC A0 A1 A2 A3 A4 A5 A6 A7 Vss 1 2 3 4 5 6 7 8 9 10 SM5028S 20 19 18 17 16 15 14 13 12 11 NC VDD Dout OSC1 OSC2 TE A11/D0 A10/D1 A9/D2 A8/D3 Page 1 V1.0 SM5028RF SAMHOP Microelectronics Corp. 212 RF ENCODER BLOCK DIAGRAM OSC2 OSC1 TE OSCILLATOR ¡Ò 3 DIVIDER DATA SELECT & BUFFER DOUT A0 A1 A2 A3 A4 A5 A6 A7 ¡Ò 12 COUNTER & 1 OF 12 DECODER SYNC. CIRCUIT 12 TRANSMISSION GATE CIRCUIT BINARY DETECTOR A11/D0 A10/D1 A9/D2 A8/D3 VDD VSS Page 2 V1.0 SM5028RF SAMHOP Microelectronics Corp. 212 RF ENCODER PIN DESCRIPTION NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 PIN NAME A0 A1 A2 A3 A4 A5 A6 A7 VSS A8/D3 A9/D2 A10/D1 A11/D0 TE OSC2 OSC1 Dout VDD I/O I I I I I I I I POWER I I Address/data input. I I I O I O POWER Enables transmission. Resistor connected be...