Mic Click

Mic click carries the SPQ0410HR5H-B surface mount silicon microphone with maximum RF protection. The click is designed to run on a 3.3V power supply. It communicates with the target microcontroller over the AN pin on the mikroBUS™ line.

How it works

Mic clicks contains a silicon microphone, which outputs the signal to the analog pin (AN) on the mikroBUS™ line via the op amp.

SPQ0410HR5H-B features

The SPQ0410HR5H-B is a miniature, high-performance, low power, top port silicon microphone.

Using the SiSonic™ MEMS technology, the SPQ0410HR5H-B consists of an acoustic sensor, a low noise input buffer, and an output amplifier.

MaxRF protection prevents RF noise in traces from getting into the mic output.

TEST CONDITIONS: 23 ± 2C °, 55 ± 20 % R.H., V_DD(min)<V_DD(max), no load, unless otherwise indicated

¹100% tested.
²Maximum specifications are measured at maximum V_DD. Typical specifications are measured at V_DD=1.8V.

Omnidirectional microphones

SPQ0410HR5H-B is an omnidirectional microphone. As the name implies an omnidirectional microphone can hear equally in all directions. So whichever way you hold it, up or down, it will work the same.

Speciifications

Pinout diagram

This table shows how the pinout on Mic click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

Notes	Pin					Pin	Notes
Analog output pin	OUT	1	AN	PWM	16	NC
	NC	2	RST	INT	15	NC
	NC	3	CS	TX	14	NC
	NC	4	SCK	RX	13	NC
	NC	5	MISO	SCL	12	NC
	NC	6	MOSI	SDA	11	NC
Power supply	+3.3V	7	3.3V	5V	10	NC
Ground	GND	8	GND	GND	9	GND	Ground

Programming

Code examples for Mic click, written for MikroElektronika hardware and compilers are available on Libstock.

Code snippet

The following code snippet measures volume every 10 ms, and outputs measured data to a tft display.

01 void main()
02 {
03    uint16_t measuredValue;
04 
05    systemInit ();
06    TFT_Set_Pen( CL_RED, 1 );
07    while (1)
08    {
09        measuredValue = ADC1_Read(12);
10        y = measuredValue/30 + 71;
11        if (x !=0)
12            TFT_Line (x, y, oldx, oldy);
13        
14        oldx = x;
15        oldy = y;
16        
17        Delay_ms (10);
18        x++;
19        if (x==320)
20        {
21            x=0;
22            TFT_Set_Pen( CL_WHITE, 1 );
23            TFT_Rectangle (0,71,320,219);
24            TFT_Set_Pen( CL_RED, 1 );
25        }
26    }
27 }