1、VS1053 is the most powerful chip of VLSI Company VS10xx series can play all kinds of music formats, also support OGG real-time encoding recording.
2、SPI port, control signal line is leaded out.
3、A headphones and audio output interface.
4、A microphone for recording.
5、A line in input interface.
6、On-board 3.3V and 1.8V LDO chip AMS-1117, the largest provider of 800Ma.
7、Single power supply: +5 VDC, capacitor filter.
8、12.288 MHz crystal.