1 introduction, 2 features, Chapter 13 – Freescale Semiconductor MC68HC908MR32 User Manual
Page 157: Serial communications interface module (sci), Introduction, Features
MC68HC908MR32 • MC68HC908MR16 Data Sheet, Rev. 6.1
Freescale Semiconductor
157
Chapter 13
Serial Communications Interface Module (SCI)
This section describes the serial communications interface module (SCI, version D), which allows
high-speed asynchronous communications with peripheral devices and other microcontroller units
(MCUs).
13.2 Features
Features of the SCI module include:
•
Full-duplex operation
•
Standard mark/space non-return-to-zero (NRZ) format
•
32 programmable baud rates
•
Programmable 8-bit or 9-bit character length
•
Separately enabled transmitter and receiver
•
Separate receiver and transmitter CPU interrupt requests
•
Separate receiver and transmitter
•
Programmable transmitter output polarity
•
Two receiver wakeup methods:
–
Idle line wakeup
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Address mark wakeup
•
Interrupt-driven operation with eight interrupt flags:
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Transmitter empty
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Transmission complete
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Receiver full
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Idle receiver input
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Receiver overrun
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Noise error
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Framing error
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Parity error
•
Receiver framing error detection
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Hardware parity checking
•
1/16 bit-time noise detection