STMicroelectronics STEVAL-MIC006V1

Overview

STEVAL-MIC006V1 from STMicroelectronics is a microphone coupon daughterboard featuring four MP23DB01HP bottom-port digital MEMS microphones, supporting PDM single-bit output, multi-performance mode (Low Power/High Performance), 135 dBSPL acoustic overload point, and operation from 1.6–3.6 V supply. It is designed for rapid evaluation and comparative testing of ST's MEMS microphones when paired with the X-NUCLEO-CCA02M2 expansion board.

For engineers reviewing the STEVAL-MIC006V1 datasheet, STEVAL-MIC006V1 pinout, STEVAL-MIC006V1 application, or STEVAL-MIC006V1 equivalent, key selection considerations include PDM interface compatibility, dual-mode SNR/sensitivity trade-offs (65 dB SNR / −41 dBFs in Performance mode; −24 dBFs in Low Power mode), acoustic overload margin, and mechanical decoupling via detachable microphone PCBs.

Technical Context

The board implements four independent MP23DB01HP transducers, each with configurable performance mode selected via external biasing-no I²C or control bus required. Each microphone outputs synchronous PDM data referenced to a shared CLK input and uses L/R pin to define channel assignment (left/right stereo framing).

Power delivery is per-microphone: VDD1/VDD2/VDD3/VDD4 pins accept 1.6–3.6 V with local 1 µF + 100 nF decoupling. The board lacks on-board voltage regulation or level translation, requiring host-supplied clean, stable PDM-compatible supply and clock signals.

Key Specifications

Availability

STEVAL-MIC006V1 is available at Aetrix Electronics and suitable for microphone evaluation, audio algorithm development, and embedded voice interface prototyping requiring stable component supply and traceable ST reference hardware.

Supply support for STEVAL-MIC006V1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, specializing in microcontrollers, sensors, power ICs, and analog/mixed-signal solutions for industrial, automotive, and consumer markets.

This board belongs to ST's X-NUCLEO ecosystem of Arduino-form-factor expansion boards, designed specifically to accelerate sensor and audio subsystem validation for STM32-based embedded development.

FAQ

Is STEVAL-MIC006V1 compatible with STM32 Nucleo boards other than X-NUCLEO-CCA02M2?

Yes-STEVAL-MIC006V1 uses standard 6-pin PDM headers (CLK, DATA, L/R, VDD, GND) and is mechanically and electrically compatible with any host board providing 1.6–3.6 V PDM-capable I/O, including STM32 Nucleo-64/144 boards with appropriate firmware configuration. No dedicated driver is required beyond standard PDM peripheral initialization.

Can the four microphones operate in different performance modes simultaneously?

No-performance mode (Low Power or High Performance) is set globally per microphone via its VDD pin voltage level and external bias network, as defined in the MP23DB01HP datasheet. All four microphones on STEVAL-MIC006V1 share identical supply routing and thus operate in the same mode unless modified externally.

What is the purpose of the detachable microphone coupons?

The four individual PCB coupons allow physical separation of microphones to eliminate mechanical crosstalk, enable spatial array configuration (e.g., linear or tetrahedral layouts), and support independent sensitivity calibration or failure isolation during lab testing without affecting other channels.

Does STEVAL-MIC006V1 include anti-aliasing or decimation filtering?

No-the board provides raw PDM bitstreams only. Digital decimation and filtering must be implemented in the host processor (e.g., using STM32 DFSDM peripheral or external FPGA/DSP). ST provides reference firmware and HAL drivers for DFSDM-based PDM-to-PCM conversion in the X-CUBE-AUDIO package.