SPI interface, the control signal line leads
1 headphones and audio output interface
1 a microphone for recording
1-line_in input interface
the power indicator
on-board 3.3V and 1.8V LDO chip AMS-1117, the largest provider of 800mA,
single power supply: +5 VDC, capacitor filter
12.288 Mhz crystal
Package Included:
1 x VS1053 MP3 Module Development Board On-Board Recording Function SPI Interface