IEBus™ (Inter Equipment Bus™) PROTOCOL CONTROL LSI

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. Because the µPD6708 also contains an IEBus driver/receiver, it can be directly connected to the bus.

FEATURES
• Protocol control of IEBus
• Multi-master system
• Broadcast communication function
   (communication 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
   • In modes 0 and 1: ±1.5 %
   • In mode 2: ±0.5 %
• Supply voltage: VDD = 5 V ±10 %

APPLICATION FIELD
   Fields where a small-scale digital data transfer system is required
   between equipment, such as automobile electronicsystems and industrial equipment