Compass 3 Click Board™

Product Code: MIKROE-4063

How Does The Compass 3 Click Board™ Work? The Compass 3 Click Board™ uses the MMC5883MA, a complete 3-axis magnetic sensor with on-chip signal processing and integrated I2C bus suitable for use in various applications, from MEMSIC. The device eliminates the need for A/D converters or timing resources by being directly connected to a microprocessor. It can measure magnetic fields within the full scale range of ±8Gauss (G), with 0.25mG per LSB resolution at 16bits operation mode and 0.4mG total RMS noise level, enabling heading accuracy of ±1° in electronic compass applications. An integrated SET/RESET function provides for the elimination of error due to Null Field output change with temperature. Temperature information from the integrated temperature sensor is available over the I2C Interface. The SET/RESET function can be performed for each measurement, periodically, or when the temperature changes by a predetermined amount as the specific application requires. In addition, the SET/RESET function clears the sensors of any residual magnetic polarization resulting from exposure to strong external magnets.

The MMC5883MA is packaged in a low profile LGA package (3.0 x 3.0 x 1.0 mm) and an operating temperature range from -40°C to +85°C. The MMC5883MA provides an I2C digital output with 400 kHz, fast mode operation. The Compass 3 Click Board™ is designed to be operated only with a 3.3V logic level. A proper logic voltage level conversion should be performed before the Click board™ is used with MCUs with different logic levels. SPECIFICATIONS Type Compass,Magnetic Applications The Compass 3 Click Board™ be used in electronic compass and navigation, position sensing or general purpose magnetic field measurements. On-board modules Compass 3 Click uses the MMC5883MA IC, a complete 3-axis magnetic sensor with on-chip signal processing, from Memsic Inc. Key Features Measuring of magnetic field within the full scale range of ±8Gauss (G), 16bits resolution, 0.25mG per LSB sensitivity, heading accuracy of ±1° Interface I2C Compatibility mikroBUS Click board size S (28.6 x 25.4 mm) Input Voltage 3.3V PINOUT DIAGRAM This table shows how the pinout for the Compass 3 Click Board™ corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns). Notes Pin Pin Notes NC 1 AN PWM 16 NC NC 2 RST INT 15 INT Interrupt NC 3 CS RX 14 NC NC 4 SCK TX 13 NC NC 5 MISO SCL 12 SCL I2C Clock NC 6 MOSI SDA 11 SDA I2C Data Power Supply 3.3V 7 3.3V 5V 10 NC Ground GND 8 GND GND 9 GND Ground ONBOARD SETTINGS AND INDICATORS Label Name Default Description LD1 PWR - Power LED Indicator COMPASS 3 CLICK ELECTRICAL SPECIFICATIONS Description Min Typ Max Unit Field Range (Each Axis) - ±8 - G Supply Voltage 2.16 3.3 3.6 V Operating Temperature Range -40 - 85 °C