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UPD6708 Description

The µPD6708 is a peripheral LSI for microcontrollers that controls the protocol of the IEBus. This LSI processes the protocol of the IEBus. Because it is provided with a transmit/receive buffer, the microcontroller can concentrate on the application processing of the IEBus.

UPD6708 Key Features

  • Protocol control of IEBus
  • Multi-master system
  • Broadcast munication function (munication between one unit and multiple units)
  • Choice of three modes with different transmission speeds
  • On-chip IEBus driver/receiver
  • Transmit/receive buffer Transmit: 4-byte FIFO Receive: 20-byte FIFO
  • Interface with microcontroller
  • Three-line serial I/O (SCK, SO, SI pins)
  • Transfer with MSB first
  • Oscillation frequency (fX): 12 MHz, 12.58 MHz