MT8870 DTMF Voice Decoder Controller Module with Arduino UNO DUE MEGA2560 sketch

Package ：(Does not include Arduino UNO/MEGA2560): 1 PCS MT8870 DTMF decoder module; 1 PCS Male to Male audio wire (3.5mm jack ) ; Description:  Onboard Complex Frequency Decoder IC MT8870DS DC Power Supply Voltage：4.5V-5.5V(Typical: 5V) Operating Temperature : -40-+85 °C IO Drive : Current Maximum 10mA. PCB Size : 25.4x25.4MM This decoding module is for mobile and fixed telephone voice dialing decoding function Designed specifically for ARDUINO Board.also use for other MCU(AVR PIC MSP430 STM32 ARM7/9/10/11 FPGA/CPLD) Does not require any wiring, can be inserted directly into the UNO/MEGA2560/DUE board to use. 12 Digital outputs decode mobile and fixed telephone keys (0-9, * #).Another 4 Digital output(ABCD) can use "DTMF Dial" Software control. Arduino uno/mega2560 Code fragment: //*******************************************// #include <FlexiTimer2.h> int STD = A0; int Q1 = A1; int Q2 = A2; int Q3 = A3; int Q4 = A4; .... //Check once every 5 ms void dtmf_decode(void) { .... } void setup() { ..... } void loop() { //Complete the decoding if(Decod_finished) { Decod_finished = 0; Serial.print(" Activate : " ); switch(Q_dat){ case 1 : Serial.print("1 \n" ); break; case 2 : Serial.print("2 \n" ); break; case 3 : Serial.print("3 \n" ); break; case 4 : Serial.print("4 \n" ); break; case 5 : Serial.print("5 \n" ); break; case 6 : Serial.print("6 \n" ); break; case 7 : Serial.print("7 \n" ); break; case 8 : Serial.print("8 \n" ); break; case 9 : Serial.print("9 \n" ); break; case 10 : Serial.print("0 \n" ); break; case 11 : Serial.print("* \n" ); break; case 12 : Serial.print("# \n" ); break; case 13 : Serial.print("A \n" ); break; case 14 : Serial.print("B \n" ); break; case 15 : Serial.print("C \n" ); break; default : Serial.print("D \n" ); break; } ..... //****************************************************************************//         Typical application for Mobile phones:      Typical application for DTMF Dial Software: