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May 2015

DocID027869 Rev 1

1/5

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X-NUCLEO-CCA02M1

Digital MEMS microphones expansion board based on

MP34DT01-M for STM32 Nucleo

Data brief

Features

 2x MP34DT01-M Digital MEMS

microphones on board

 6 slots to plug digital microphone coupon

boards such as STEVAL-MKI129Vx and

STEVAL-MKI155Vx

 Up to 4 microphone synchronized

acquisition and streaming

 Free comprehensive development firmware

library and audio capture and USB

streaming example application compatible

with STM32Cube firmware

 Compatible with STM32 Nucleo boards

 Equipped with Morpho connector (upward

and downward)

 Equipped with Arduino UNO R3 connector

(upward) to allow multiple board application

 RoHS compliant

Description

The X-NUCLEO-CCA02M1 is an evaluation

board based on digital MEMS microphones. It is

compatible with the Morpho connector layout,

and it's designed around STMicroelectronics

MP34DT01-M digital microphones. It has two

microphones soldered on board and it is

compatible with digital microphone coupon

boards such as STEVAL-MKI129Vx and

STEVAL-MKI155Vx. The X-NUCLEO-CCA02M1

allows the acquisition and streaming of up to 2

microphones using the I²S peripheral and up 4

coupon microphones using both I²S and SPI. It

represents an easy to use and fast solution for

the development of microphone based

application as well as a starting point for audio

algorithm implementation.

Summary of content (5 pages)

PAGE 1
X-NUCLEO-CCA02M1 Digital MEMS microphones expansion board based on MP34DT01-M for STM32 Nucleo Data brief Description Features         2x MP34DT01-M Digital MEMS microphones on board 6 slots to plug digital microphone coupon boards such as STEVAL-MKI129Vx and STEVAL-MKI155Vx Up to 4 microphone synchronized acquisition and streaming Free comprehensive development firmware library and audio capture and USB streaming example application compatible with STM32Cube firmware Compatible with STM32 Nucle
PAGE 2
Schematic diagram 1 X-NUCLEO-CCA02M1 Schematic diagram Figure 1: X-NUCLEO-CCA02M1 circuit schematic (Part 1) U2 1 D1 1 2 ON: 5V Expansion -> Nucleo (stream and power from Expansion USB) OFF: 5V generated on Nucleo.
PAGE 3
X-NUCLEO-CCA02M1 Schematic diagram Figure 3: X-NUCLEO-CCA02M1 circuit schematic (Part 3) On-Board (OB) 3V3 LR 2 C2 MIC_CL K 3 CLK 100nF MIC_P D MP34D T01-M 4 MIC_PDM34_ OB DOUT GND GND GND GND CLK VDD LR 3 M2 1 2 MIC_CL K 100nF GND GND GND GND C1 VDD MP34D T01-M 4 MIC_PD M12_OB DOUT 5A 5B 5C 5D M1 1 5A 5B 5C 5D 3V3 MIC_P U MIC_PD M12_OB SB9 Ope n MIC_PDM34_ OB Mic Source Selector MIC_PDM12_ OB MIC_PD M12 MIC_PDM12_E XT MIC_PDM34_ OB MIC_PD M34 MIC_PDM34_E XT J2 1 2 3 HE
PAGE 4
Revision history 2 X-NUCLEO-CCA02M1 Revision history Table 1: Document revision history 4/5 Date Version Changes 13-May-2015 1 Initial release.
PAGE 5
X-NUCLEO-CCA02M1 IMPORTANT NOTICE – PLEASE READ CAREFULLY STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement.