Spark Logic

FN-M16P serial MP3 module connection guide

FN-M16P serial MP3 module Flyron FN-M16P, 16 contacts wiring guide with power, signal assignments, and bench checks.

Flyron FN-M16P, 16 contacts

16 contacts Current package

Flyron Technology · Two rows of eight contacts surrounding the microSD slot.

Play a known microSD track

Required

Copy a short test track to /MP3/0001.mp3 on a FAT32 microSD card. Insert the card with power off. Use a regulated 5 V supply, a 3.3 V logic UART and one 8 Ω speaker across pads 6 and 8.

  • 5 V supply
    • VCC (1)
    • Regulated 5 V
    • C1.1
  • Ground
    • GND (7)
    • GND (10)
    • Supply return
    • Host ground
    • C1.2
  • Host to module
    • RX (2)
    • Host UART TX
  • Module to host
    • TX (3)
    • Host UART RX
  • Speaker contact 1
  • Speaker contact 2
  • Playback indication
    • BUSY (16)
    • 3.3 V logic analyzer input
C1 100 nF between 5 V supply and Ground5 V supplyC1 100 nFGround

Bench checks

  • Set the UART to 9600 bit/s, 8N1. Wait for the startup frame with command byte 0x3F before sending a command.
  • Send 7E FF 06 06 00 00 04 FE F1 EF to set low volume. Then send 7E FF 06 12 00 00 01 FE E8 EF to play the named file.
  • Check that BUSY goes low while playing. Keep both speaker wires isolated from the ground rail.

Flyron FN-M16P data sheet V1.0, §§ 2, 3.1–3.2, 3.5.1, 3.6.2, 3.6.7 and Figure 5-4.

Flyron FN-M16P, 16 contacts wiring map

Highlighted contacts are used in the required step or selected circuit. Select a contact to inspect it.

Flyron FN-M16P, 16 contacts
Component-side view with the microSD card opening at the bottom. VCC (1) is upper left and BUSY (16) is upper right. Scroll the map to reach all contacts.
Selected pin details

5 · DAC_L

Output · Outputs

Left audio DAC output for an earphone or an external amplifier.

Flyron FN-M16P data sheet V1.0, § 2, pin map and table

Electrical limits · Pin in the reference

Models and documents

This map follows the 16-contact Flyron FN-M16P board in the manufacturer PDF. Identify the FN-M16P board marking and the two eight-contact rows before using the map.

Flyron FN-M16P
The 16-contact microSD module shown in the Flyron data sheet.
  • Flyron FN-M16P data sheet V1.0· Flyron original PDF download. Contact assignments, packet format, volume, named-folder playback and speaker connection.