Fig. 1: MIO168 r2B2 prototype (without AFE attached)

Feature list

• On-board STM32F446ZCT6 high-performance foundation line MCU, ARM Cortex-M4 with DSP and FPU, 256 KiB Flash, LQFP-144 package
• 1 x 8-pin single row 3.81 mm connector (digital inputs)
• 1 x 16-pin dual row 3.81 mm I/O connector (digital and analog outputs)
• 2 x 10-pin ADIB 2.0 mm connectors
• 8 x protected digital inputs (3.3/5/24 V), 2 x fast/slow, 6 x slow
• 8 x digital outputs (low-side) with multiple protections and FAULT detection, 550 mA per channel (current limit 1 A)
• 2 x PWM outputs (protected) or sensor bias power (+/-15 V, max. 10 mA)
• 2 x analog bipolar outputs (+/-5 V, +/-10 V, 0-5 V, 0-10 V). Voltage or current output with protection. 12-bit DAC, replaceable with pin compatible 14- or 16-bit version
• 2 x analog bipolar outputs +/-10 V. 12-bit DAC, replaceable with pin compatible 14- or 16-bit version
• On-board isolated power supply with +/-5.3 V outputs (with 4x multipliers), +/-15 V and +3.3 V LDO
• Firmware download via SPI
• Optional SWD for debugging
• Optional Micro SD card
• I2C EEPROM for storing board specific parameters
• Dimensions: 146 x 95 mm, 4-layer PCB

Fig. 2: Isolated DIB, EEPROM, isolated power supply

Fig. 3: MCU, optional micro SD card

Fig. 4: Voltage/Current output DACs

Fig. 5: Dual voltage output DAC, 8 x low-side switches

Fig. 6: 8 digital dual range inputs

Fig. 7: PWM outputs / Sensor bias power, AFE expansion connectors