Magneto 9 Click Board™

Product Code: MIKROE-4778

How Does The Magneto 9 Click Board™ Work? The Magneto 9 Click Board™ as its foundation uses the A1359, a one-time programmable, dual tracking output, linear Hall-effect sensor from Allegro MicroSystems. It provides a dual analogue/PWM output, where the PWM output tracks the analogue output to within a +/-3% mismatch. It comes with factory-programmed output polarity; in this case, a forward polarity meaning that output voltage increases with increasing positive (south) applied magnetic field. The A1359 is targeted at the automotive market with end applications to include electronic power steering (torque sensing), transmission component position, brake and clutch cylinder position, and various other industrial applications. The analogue output signal of the A1359 can be converted to a digital value using MCP3221, a successive approximation A/D converter with a 12-bit resolution from Microchip, using a 2-wire I2C compatible interface, or can be sent directly to an analogue pin of the mikroBUS™ socket labelled as AN.

Selection can be performed by onboard SMD jumper labelled as AD SEL to an appropriate position marked as AN and ADC. The MCP3221 provides one single-ended input with low power consumption, a low maximum conversion current, and a Standby current of 250μA and 1μA, respectively. Data can be transferred at rates of up to 100kbit/s in the Standard and 400kbit/s in the Fast Mode. Also, maximum sample rates of 22.3kSPS with the MCP3221 are possible in a Continuous-Conversion Mode with a clock rate of 400kHz. This Click board™ operates only with a 5V logic voltage level. The board must perform appropriate logic voltage level conversion before use with MCUs with different logic levels. However, the Click board™ comes equipped with a library containing functions and an example code that can be used, as a reference, for further development. Specifications Type Magnetic Applications Can be used in automotive and industrial applications such as displacement and angular position, which requires high accuracy in conjunction with redundant outputs On-board modules A1359 - dual tracking output linear hall-effect sensor from Allegro MicroSystems Key Features Low power consumption, factory-programmed offset, sensitivity, and polarity, dual-output (analog and PWM), accuracy, forward polarity, possibility of signal processing in analog and digital form, and more Interface Analog,I2C,PWM Compatibility mikroBUS Input Voltage 5V Pinout diagram This table shows how the pinout on Magneto 9 Click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns). Notes Pin Pin Notes Analog Signal AN 1 AN PWM 16 PWM PWM Signal NC 2 RST INT 15 NC 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 NC 7 3.3V 5V 10 5V Power Supply Ground GND 8 GND GND 9 GND Ground Onboard settings and indicators Label Name Default Description LD1 PWR - Power LED Indicator JP1 AD SEL Left Output Voltage AD Selection AN/ADC: Left position AN, Right position ADC Magneto 9 Click electrical specifications Description Min Typ Max Unit Supply Voltage - 5 - V Maximum Output Current - - 10 mA Operating Temperature Range -40 +25 +150 °C