SPMC65P2408A application in one pair of mic identification directions


Posted on Feb 7, 2014

The part of the hardware mainly finishes the magnification of sound, when the sound is enough large, have measured on can lead this signal into the one-chip computer ing. The hardware makes up the frame picture and is shown by 1-1. Mainly made up of CPU, analogous circuit and display circuit. The analogous circuit is used in the sound to enlarge,


SPMC65P2408A application in one pair of mic identification directions
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reveal led board can reveal the present sound direction state. In the schematic diagram, divided into three parts altogether, on the left is mic recording circuit, mic signal is after the electric capacity is block, reach the intermediate amplifying circuit, the signal after amplifying reaches the circuit of right, after comparing, export on I/O mouth of the one-chip computer. SPMC2408A is insulted 8 technical grade one-chip computer that the open company designs developing, regards SPMC65 CPU as the core, support the operation order in the location. Have strong timing / many kinds of functions such as counter, abundant outside interrupt source and ADC, PWM, standard communication interface. Suitable for common worker`s accusing of occasion, computer peripheral control and electrical home appliances, etc. SPMC2408A has 28 base pins and 32 base pins and two kinds of capsulation, 32 base pins have capsulated UART function more. Originally design choosing 28 base pins to capsulate, as shown in Fig. 3-1. The part of the hardware mainly finishes the magnification of sound, when the sound is enough large, have measured on can lead this signal into the one-chip computer ing. The hardware makes up the frame picture and is shown by 1-1. Mainly made up of CPU, analogous circuit and display circuit. The analogous circuit is used in the sound to enlarge, reveal led board can reveal the present sound direction state. In the schematic...




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