·                  Decodes MPEG 1 & 2 audio layer III (MP3) (CBR+VBR+ABR); layers I & II (MP1 and MP2) optional; MPEG4 / 2 AAC-LC-2.0.0.0 (+PNS); WMA4.0/4.1/7/8/9 all profiles (5-384 kbps); WAV (PCM + IMA ADPCM); General MIDI / SP-MIDI format 0 files

·                  Encodes IMA ADPCM from microphone or line input

·                  EarSpeaker Spatial Processing

·                  Streaming support

·                  Bass and treble controls

·                  Operates with a single 12 - 13 MHz, or 24 - 26 MHz clock

·                  Internal PLL clock multiplier

·                  Low-power operation

·                  High-quality on-chip stereo DAC with no phase error between channels

·                  Stereo earphone driver capable of driving a 30­ ohm load

·                  Quiet power-on and power-off

·                  I2S interface fir external DAC

·                  Separate operating voltages for analog, digital and I/O

·                  5.5 KiB On-chip RAM for user code / data

·                  Serial control and data interfaces

·                  Can be used as a slave co-processor

·                  SPI flash boot for special applications

·                  UART for debugging purposes

·                  New functions may be added with software and 8 GPIO pins

·                  Not recommended for new projects since 2009, superseded by VS1053

LQFP48 7x7x1.4mm

BGA49 7x7x1.4mm