MC68HC08AZ16 Datasheet, PDF (227/527 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Serial Peripheral Interface Module (SPI)
NOTE:
A ‘1’ on the SS pin of a slave SPI puts the MISO pin in a high impedance
state. Also, the slave SPI ignores all incoming SPSCK clocks, even if it
was already in the middle of a transmission.
To clear the MODF flag, the SPSCR should be read with the MODF bit
set and then the SPCR register should be written to. This entire clearing
mechanism must occur with no MODF condition existing or else the flag
will not be cleared.
MC68HC08AZ32
226
Serial Peripheral Interface Module (SPI)
18-spi
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