VS1003B MP3 Audio Decoder Module with SPI and Recording

Information about this module is generated with the help of AI. The description may be incomplete, inaccurate, or subject to change.
The VS1003B MP3 Decoding Module is an audio module based on the VS1003B for hardware decoding and playback of digital audio. The module supports MP3, MP3+V, WMA, WAV, MIDI and SP-MIDI and can receive MP3 and WAV data streams from a microcontroller.

Communication with the module uses SPI with separate connections for control and audio data transfer. This allows a microcontroller to read an audio file from an SD card or memory and transfer the file data to the VS1003B, which handles decoding and conversion to analog audio.

The module includes an integrated stereo DAC and headphone driver together with an analog audio output connection. It also provides microphone and line in inputs. The microphone input can be used for recording, with the VS1003B encoding audio as IMA ADPCM mono. Recorded data can be read by a connected microcontroller and stored as a file.

The board includes AMS1117 voltage regulation for 3.3 V and 2.5 V together with supply voltage filtering. The module operates from a 5 VDC supply and provides separate internal supplies for analog, digital and IO sections. A 12.288 MHz crystal oscillator is used together with the internal clock multiplier.

Connections include MISO, MOSI and SCK for SPI communication and DREQ for indicating when the device is ready for data. XCS is used for the control interface, XDCS for audio data and XRST for reset.

Facts.
Model: VS1003B MP3 Decoding Module
IC: VS1003B
Function: Audio decoding and audio recording
Supply voltage: 5 VDC
Power supply: Single 5 VDC supply
Voltage regulation: AMS1117
Internal voltages: 3.3 V and 2.5 V
Regulator current capacity: Max 800 mA
Communication interface: SPI
SPI signals: MISO MOSI SCK
DREQ: Data Request signal
XCS: Chip Select for control interface
XDCS: Chip Select for audio data
XRST: Reset signal
Decoding formats: MP3 MP3+V WMA WAV MIDI SP-MIDI
Streaming: MP3 and WAV
DAC: Integrated stereo DAC
ADC: Integrated adjustable 16 bit ADC
Headphone driver: Integrated stereo
Recommended headphone impedance: 30 ohm
Audio output: Stereo analog
Microphone input: Yes
Recording: Yes
Recording format: IMA ADPCM mono
Line in: Yes
Clock frequency: 12.288 MHz
Clock multiplier: Integrated PLL
Power indicator: Yes
Supply filtering: Capacitor filtering

Included.
1 pc module.

About the product.
Weight: approx 13 gram.
Contact us if you have questions at info@pchbutik.se
Article no: 2948
Remaining stock quantity can be found under the Product details tab.
In our range since: 2026-08-17

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