SM0038 and Microcontroller Interface Circuit

As shown in Fig. The  SM0038  external only three pins: VS, GND and a pulse signal output pin OUT, shape pin. VCC +5 V power supply and filter capacitor to avoid the interference of power; GND Ground (0V); pulse signal output to the CPU to the interrupt input pin (for example, the 8051 13-pin INT1). Take this connection, the software decoder can work in a query can also work in interrupt mode.