DIGI POT 6 Click Board™

Product Code: MIKROE-4110

How Does The DIGI POT 6 Click Board™ Work? The DIGI POT 6 Click Board™ as its foundation uses the MCP41HV51, 8-bit dual power rails digital potentiometer with SPI serial interface and volatile memory from Microchip. It has a wide operating voltage range, analog from 10 to 36V and digital from 2.7 to 5.5V or implemented as dual-rail (±18V) for systems requiring wide signal swing or high power-supply voltages. It supports resistor configurations of 255 resistors and 256 steps and high terminal/wiper current, including the ability to sink/source up to 25mA on all terminal pins for driving larger loads. The resistor network of the MCP41HV51 has an 8-bit resolution where each resistor network allows Zero-Scale to Full-Scale connections. All these features combined with an extended temperature range make the MCP41HV51 well suited for a broad range of high-voltage and high-temperature applications, including those in the industrial, automotive, and audio markets. The DIGI POT 6 Click Board™ communicates with MCU using the SPI serial interface with a maximum frequency of 10MHz and supports the two most common SPI modes, 0 and 3.

This Click board™ also has three terminals labelled as P0A, P0B, and P0W, with an internal architecture that comprises various resistances and switches. The resistance between terminals A and B, RAB, commonly called the "end-to-end" resistance, provides RAB resistance options up to 100 kΩ. In contrast, the wiper terminal, P0W, is digitally programmable to access any 2n tap points on the resistor string. The DIGI POT 6 Click Board™ can operate with both 3.3V and 5V logic voltage levels selected via the VCC SEL jumper. This way, it is allowed for both 3.3V and 5V capable MCUs to properly use the SPI communication lines. However, the Click board™ comes equipped with a library containing easy-to-use functions and an example code that can be used, as a reference, for further development. SPECIFICATIONS Type Digital potentiometer Applications The DIGI POT 6 Click Board™ can be used for precision calibration of set point thresholds, adjustable power supplies, adjustable gain amplifiers and offset trimming, and more. On-board modules MCP41HV51 - 8-bit dual power rails digital potentiometer with SPI serial interface and volatile memory from Microchip. Key Features Wide operating voltage range, configurable resistance options, Zero-Scale to Full-Scale wiper operation, low wiper resistance, and more. Interface SPI Compatibility mikroBUS Click board size M (42.9 x 25.4 mm) Input Voltage 3.3V or 5V PINOUT DIAGRAM This table shows how the pinout of the DIGI POT 6 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 NC SPI Chip Select CS 3 CS RX 14 NC SPI Clock SCK 4 SCK TX 13 NC SPI Data OUT SDO 5 MISO SCL 12 NC SPI Data IN SDI 6 MOSI SDA 11 NC Power Supply 3.3V 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 VCC SEL Right Power Supply Voltage Selection 3V3/5V, left position 3V3, right position 5V DIGI POT 6 CLICK ELECTRICAL SPECIFICATIONS Description Min Typ Max Unit Digital Supply Voltage 3.3 - 5 V Analog Supply Voltage 10 -