rMP3 Features

Features 
Card TypesSD/miniSD/microSD
Card FormatMMC/SD/SDHC/SDXC
Card Sizes8MB → 2TB
File SystemsFAT12
FAT16
FAT32
Control InterfaceTTL Serial
SPI
7 bit w/trigger
8 buttons
Serial Interface8 bits, no parity, 1 stop bit
Serial Speeds2400, 4800, 9600, 19200, 38400, 57600, 115200, 230400, 460800 bps
Shield Form FactorYes
Audio FormatsMP3
PCM WAV
IMA ADPCM
MP3 Bitrates32 → 320 kbps
MP3 Sample Rates32, 44.1, 48 KHz
Analog Output
Load Resistance
16Ω (minimum)
Operating
Temperature
-40°C to +85°C
Physical Size2.7x2.1 inches (69x54 mm)
Power Source5 Volts
Chipset AvailableYes (2 chips)
Controller: 1 x 44 lead TQFP, or 44 pad QFN
Decoder: 1 x 48 lead LQFP
RoHS CompliantYes