MC68HC08AZ16 Datasheet, PDF (229/527 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Serial Peripheral Interface Module (SPI)
ERRIE
MODF
OVRF
SPTE SPTIE SPE
SPRIE SPRF
SPI TRANSMITTER
CPU INTERRUPT REQUEST
SPI RECEIVER/ERROR
CPU INTERRUPT REQUEST
Figure 10. SPI interrupt request generation
Two sources in the SPI status and control register can generate CPU
interrupt requests:
• SPI receiver full bit (SPRF) — the SPRF bit becomes set every
time a byte transfers from the shift register to the receive data
register. If the SPI receiver interrupt enable bit, SPRIE, is also set,
SPRF can generate either an SPI receiver/error CPU interrupt
request.
• SPI transmitter empty (SPTE) — the SPTE bit becomes set every
time a byte transfers from the transmit data register to the shift
register. If the SPI transmit interrupt enable bit, SPTIE, is also set,
SPTE can generate an SPTE CPU interrupt request .
MC68HC08AZ32
228
Serial Peripheral Interface Module (SPI)
20-spi
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