XC68HC705F32 Motorola, XC68HC705F32 Datasheet - Page 109

• Manufacturer Part Number: XC68HC705F32
• Description: MICROCONTROLLER
• Manufacturer: Motorola

A full-duplex asynchronous serial communications interface (SCI) is provided with a standard
non-return-to-zero (NRZ) format and a variety of baud rates. The SCI transmitter and receiver are
functionally independent and have their own baud rate generator; however they use the same
baud rate and data format.
The serial data format is standard mark/space (NRZ) and provides one start bit, eight or nine data
bits, and one stop bit.
Any SCI bidirectional communication requires a two-wire system: receive data in (RDI) and
transmit data out (TDO).
‘Baud’ and ‘bit rate’ are used synonymously in the following description.
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MC68HC05F32
Standard NRZ (mark/space) format
Advanced error detection method with noise detection for noise duration of up to 1/16th bit time
Full-duplex operation (simultaneous transmit and receive)
32 software selectable baud rates
Software selectable word length (eight or nine bits)
Separate transmitter and receiver enable bits
Interrupt drive capability
Four separate enable bits for interrupt control
SERIAL COMMUNICATIONS INTERFACE
SCI two-wire system features
SERIAL COMMUNICATIONS INTERFACE
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MOTOROLA
TPG
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