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Description

The Arduino? Nicla Voice packs machine-learning capabilities on the edge into a tiny fingerprint.

Implement always-on speech recognition with the Nicla Voice. The board integrates a dedicated Neural Decision Processor Syntiant? NDP 120 able to run multiple AI algorithms at the same time. Leverage the built-in microphone, nRF52832 microcontroller, Bluetooth? Low Energy module, 6-axis IMU and 3-axis magnetometer to create your own wireless sensor network for machine learning applications with low power consumption capabilities.

Features

ANNA-B112 Bluetooth? Module with integrated microprocessor

nRF52832 System-on-chip

64 MHz Arm? Cortex?-M4F microcontroller

64 KB SRAM

512 KB Flash

RAM mapped FIFOs using EasyDMA

2x SPI (one is accessible via pin header)

2x I2C (one is accessible via pin header)

12-bit/200 ksps ADC

2.400 - 2.4835 GHz Bluetooth? (5.0 via cordio stack, 4.2 via ArduinoBLE)

Internal antenna

Internal 32 MHz oscillator

1.8 V Operating Voltage

Syntiant? NDP120 Neural Decision Processor? (Microprocessor)

1x Syntiant? Core 2? ultra-low power deep neural network inference engine

1x HiFi 3 Audio DSP

1x Arm? Cortex? M0 core up to 48 MHz

Dedicated Low IQ High PSRR Low-Dropout regulator (TPS7A05)

1μA of typical very-low quiescent current consumption (3μA maximum)

Dedicated 48KB SRAM

Sensors

IMU 6-axis (BMI270)

16-bit 3-axis accelerometer ± 2/4/8/16 g range

Output data rates (ODR): 0.78Hz-1.6 kHz

16-bit 3-axis gyroscope ±125/250/500/1000/2000 dps range

Output data rates (ODR): 25Hz-6.4 kHz

Fast offset error compensation for accelerometer and gyroscope

Rapid startup time:

2ms for Gyroscope with fast start mode

2ms for Accelerometer

<1μs of HW synchronization

Wide voltage supply range

Low Power

Current consumption: typ. 685 μA (full ODR and aliasing-free operation)

Built-in PMU

Magnetometer 3-axis (BMM150)

Low voltage operation

Ultra-low power, current consumption 170μA @ 10 Hz in low power preset

Interrupt signal generation for magnetic Low-/High-Threshold detection

Magnetic field range typical of ±1300μT (x, y-axis), ±2500μT (z-axis)

Magnetic field resolution of ~0.3μT

Maximum magnetic field rating at any direction >7T

High-Performance Microphone (IM69D130)

Frequency range 20 Hz ~ 20 kHz

MEMS (silicon) type

Dynamic range of 105dB

<1% total harmonic distortions up to 128 dBSPL

Sensitivity (± 1dB) and phase (± 2° @1kHz) matched

Flat frequency response with low-frequency roll-off at 28Hz

Power-optimized modes determined by PDM clock frequency

PDM output

Omnidirectional pickup pattern

I/O

Castellated pads (J1, J2, J3)

1x I2C bus, also available on the ESLOV connector

1x Serial Port (UART)

1x SPI

2x ADC

GPIOs configurable voltage 1.8 V/3.3 V

1x Battery Input

Integrated battery charger and fuel gauge (BQ25120AYFPR) for 3.7V Li-Po battery

Power Input and Output (3.3 V, GND and VIN)

External PDM microphone connector (Via 4-pin 0.5 mm pitch FFC cable compatible with FH33J-4S ZIF

connector)