DY-SV17F MP3 Voice Playback Module – 4 MB Flash, 5 W Amp

The DY-SV17F is a compact MP3 and voice playback module with 4 MB of onboard flash and a 5 W Class-D amplifier. It loads MP3 and WAV files through Micro-USB and supports direct I/O triggering, 9600 bps UART control, One-line control and button-style MP3 operation.

⚠️ Delivery: 10–12 working days. This is a special order item, sourced on demand to ensure the best possible price and availability. Learn more

Key benefits

• Stores audio on the module, so no microSD card is required.
• Drives a suitable 4–8 Ω, 3–5 W speaker directly.
• Supports button, sensor and microcontroller control.
• Provides DACL and DACR outputs for an external amplifier.
• Compact 23 × 26 mm PCB with 2.54 mm connection pitch.

Applications

• Voice prompts and status announcements
• Alarms, doorbells and access-control sounds
• Talking models, props and interactive exhibits
• Robotics, automation and control panels

Compatibility

Use a regulated 5 V supply. I/O and UART signals use 3.3 V logic. Use proper level shifting or voltage division for signals driven into the module from a 5 V controller.

For direct speaker drive, connect a 4–8 Ω, 3–5 W speaker across SPK+ and SPK− only.

Technical specifications

• Product type: Embedded MP3/WAV audio and voice playback module
• Model: DY-SV17F
• Main controller: DY1703A
• Supply voltage: 5 V DC
• Logic voltage: 3.3 V
• Logic input levels: LOW 0–0.8 V; HIGH 2.7–3.3 V
• Audio formats: MP3 and WAV
• Sample rates: 8 / 11.025 / 12 / 16 / 22.05 / 24 / 32 / 44.1 / 48 kHz
• DAC: 24-bit; stated 90 dB dynamic range and 85 dB signal-to-noise ratio
• Storage: 32 Mbit (4 MB) onboard flash
• File loading: Micro-USB
• Amplifier: 5 W Class-D
• Recommended speaker: 4–8 Ω, 3–5 W
• Control: I/O trigger, UART, One-line and standard MP3/button operation
• Operating modes: 7
• UART: Full duplex, 9600 bps, 8 data bits, 1 stop bit, no parity
• Track addressing: Up to 65,535 via UART; 8 direct I/O tracks or up to 255 I/O combinations
• Volume: 0–30; default 20
• EQ: Normal, Pop, Rock, Jazz and Classic
• Playback modes: Full cycle, single loop, single stop, random, folder repeat, folder random, folder sequential and device sequential
• BUSY output: LOW during playback and 3.3 V HIGH after playback; CON3 is a configuration input during the first 30 ms after power-up
• Auxiliary output: 3.3 V, 80 mA maximum
• Board dimensions: 23 × 26 mm
• Connection pitch: 2.54 mm
• Row-centre spacing: 20.32 mm
• Edge connections: 18
• Sold as: Each
• Product code: DY-SV17F-MP3-VOICE-MODULE-NZ

Pin connections

Important limitations

• Power the module from 5 V. The 3.3 V specification applies to I/O/UART logic and the V33 output.
• Do not connect SPK+ or SPK− to GND. The speaker output is bridge-tied; connect the speaker only between SPK+ and SPK−.
• This module has fixed 4 MB onboard flash and no microSD/TF-card slot.
• Audio capacity depends on file format, bitrate and channel count.
• Gapless playback is not specified.
• Correct mode-pin strapping and 3.3 V-safe control signals are required.

Package includes

1 × DY-SV17F MP3 and voice playback module.

Does not include

Speaker, Micro-USB data cable, pin headers, power supply, microcontroller, buttons or connecting wire.

Quick setup

1. Load the required MP3 or WAV files into the onboard flash through a Micro-USB data connection.
2. Configure CON1, CON2 and CON3 for the required operating mode before applying power.
3. Connect a regulated 5 V supply to V5 and GND.
4. For direct audio, connect a suitable speaker across SPK+ and SPK−.
5. Connect only 3.3 V-safe control signals. For UART mode, use 9600 bps, 8 data bits, 1 stop bit and no parity.
6. If track order matters, copy files to flash in the intended order and test the finished set before installation.