台湾のSoCメーカーMediaTekが、オーディオ向けチップ「MT2533D」を発表。ARM Cortex-M4プロセッサーを搭載し、Bluetooth対応のワイヤレスヘッドフォンやヘッドセット、スマートデバイスなどに搭載が期待されます。

MediaTek MT2533D

MT2533Dは車載向けハンズフリーやワイヤレスヘッドフォン向けに開発されたチップで、デュアルモードのBluetooth2.1や4.2 Low Energyに対応しています。スペック表は以下の通り。


  • 208MHz ARM® Cortex®-M4 processor with FPU
  • Hardware DFS from 26MHz to 208MHz
  • 17 DMA channels
  • Crypto engine AES 128/192/256 bits
  • True random number generator
  • Operating temperature from -40°C to 85°C


  • 160kB SRAM with zero-wait state and 208MHz maximum frequency
  • 32kB L1 cache with zero-wait state and 208MHz maximum frequency
  • 4MB flash with sleep current down to 100nA and 78MHz maximum frequency
  • 4MB pseudo SRAM with sleep current down to 10µA and 104MHz maximum frequency


  • USB 2.0, 3 UARTs, 3 I2Cs, I2S, 6 PWMs, 4 SPI masters, SPI slave, SDIO v2.0 and 5-channel ADC
  • Supports 38 GPIO ports


  • Bluetooth specification 4.2
  • Dual mode (Bluetooth and Bluetooth LE)
  • Integrated T/R switch, Balun and PA
  • PA provides 7.5dBm output power
  • Bluetooth and Bluetooth LE receiver sensitivity of -93dBm and -96.5dBm, respectively
  • Up to 7 simultaneous active ACL links
  • 1 SCO or eSCO link with CVSD/mSBC coding


  • AAC/SBC for Bluetooth audio
  • CVSD/mSBC for Bluetooth speech
  • PCM playback: 8-48kHz sample rate
  • PCM record: 8kHz and 16kHz sample rates
  • Dual-mic noise suppression and acoustic echo cancellation
  • Beamforming


  • Hardware 2D accelerator supporting 4-layer overlay, alpha blending, font drawing, 7 types of rotation bitblit and display rotation. It also supports ARGB8888, RGB888, RGB565 and ARGB6666 pixel formats
  • DBI serial interface supporting 320 x 320 pixels at 30fps
  • 1-lane MIPI DSI interface supporting 480 x 320 pixels at 30fps


  • MediaTek camera serial interface
  • VGA at 30fps with YUV422 or RGB565

Technology and package

  • Highly integrated SiP technology
  • 6.2 x 5.8 x 1.05 mm 172-ball TFBGA with 0.4mm pitch