MC68HC08AS32A Datasheet, PDF (218/296 Pages) Motorola, Inc – Microcontrollers

Freescale Semiconductor, Inc.
Serial Peripheral Interface (SPI)
INTERNAL BUS
TRANSMIT DATA REGISTER
BUS CLOCK
÷2
CLOCK ^{÷ 8}
DIVIDER _{÷ 32}
÷ 128
SHIFT REGISTER
76543210
RECEIVE DATA REGISTER
SPMSTR SPE
CLOCK
SELECT
SPR1 SPR0
CLOCK
LOGIC
PIN
CONTROL
LOGIC
M
S
SPMSTR CPHA CPOL
MISO
MOSI
SPSCK
SS
TRANSMITTER CPU INTERRUPT REQUEST
RECEIVER/ERROR CPU INTERRUPT REQUEST
SPI
CONTROL
MODFEN
ERRIE
SPTIE
SPRIE
SPE
SPWOM
SPRF
SPTE
OVRF
MODF
Figure 15-3. SPI Module Block Diagram
Data Sheet
218
Serial Peripheral Interface (SPI)
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MC68HC08AS32A — Rev. 1
MOTOROLA