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TMC55DU is a Low cost MP3/WMA Decoder with MMC/SD controller, SPI(Serial Peripheral Interface) ぱMaster/Slave, USB 2.0 (Host). TMC55DU is instruction-compatible to MCS51.
 
 
 Embeded 8-bit microcontroller 8051
  MP3 Decoder
- MPEG 1/2/2.5 Layer 2/3
 WMA Decoder
- Support WMA Version 4,7,8,9 (except MBR)
- Support the high-bitrate and mid-bitrate by Microsoft from 15kbps to 320kbps like as below table. Sampling frequency supported : 22.05kHz, 32kHz, 44.1kHz, 48kHz
 Volume Controller
- Bass/Treble control
 SPI Interface
- Master / Slave
 Internal DAC
- 16-bit sigma delta stereo DAC
- De-emphsis support Soft mute
 USB 2.0 Host
- Full speed (12Mbps)
 MMC/SD/Memorystick controller
  I2C
- Master/Slave
- Hold mode support for High speed mode of version 2.0
  22 GPIO or Special purpose I/O
 Oscillator
- Single 16.9344MHz crystal clock input.
- Oscillation Sources & PLL
 Operating Voltage
- Core: 1.8V
- I/O: 3.3V
  Operating Temperature
- -40*C -85 *C
 Package
- 48-TQFP-0707