MC68HC05V12 Datasheet, PDF (102/246 Pages) Freescale Semiconductor, Inc – HCMOS Microcontreller Unit

Freescale Semiconductor, Inc.
Serial Peripheral Interface (SPI)
10.3 Features
Features of the MC68HC705V12 include:
• Full duplex, 3-wire synchronous transfers
• Master or slave operation
• Internal MCU clock divided by two (maximum) master bit
frequency
• Internal MCU clock (maximum) slave bit frequency
• Four programmable master bit rates
• Programmable clock polarity and phase
• End of transmission interrupt flag
• Write collision flag protection
• Master-master mode fault protection capability
10.4 SPI Signal Description
This subsection describes these signal functions for both master and
slave modes:
• Master out/slave in (MOSI)
• Master in/slave out (MISO)
• Serial clock (SCK)
• Slave select (SS)
To function properly, the SPI forces the direction on some of the pins to
output.
Technical Data
Serial Peripheral Interface (SPI)
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MC68HC05V12 — Rev. 2.0