MC68HC708AS48 FREESCALE [Freescale Semiconductor, Inc], MC68HC708AS48 Datasheet - Page 287

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MC68HC708AS48

Manufacturer Part Number
MC68HC708AS48
Description
Advance Information
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
Datasheet
BUS CLOCK
2
8
CLOCK
DIVIDER
32
128
CLOCK
SPMSTR
SPE
SELECT
SPR1
TRANSMITTER CPU INTERRUPT REQUEST
RECEIVER/ERROR CPU INTERRUPT REQUEST
Figure 18-2. SPI Module Block Diagram
The SPI module allows full-duplex, synchronous, serial communication
between the MCU and peripheral devices, including other MCUs.
Software can poll the SPI status flags or SPI operation can be
interrupt-driven. All SPI interrupts can be serviced by the CPU.
The operation of the SPI module is described here.
MC68HC708AS48
Rev. 4.0
MOTOROLA
INTERNAL BUS
TRANSMIT DATA REGISTER
SHIFT REGISTER
7
6
5
4
3
2
1
0
RECEIVE DATA REGISTER
CLOCK
SPR0
SPMSTR
MODFEN
ERRIE
SPI
CONTROL
SPTIE
SPRIE
SPE
SPRF
SPTE
OVRF
MODF
Serial Peripheral Interface (SPI)
Serial Peripheral Interface (SPI)
Functional Description
MISO
MOSI
PIN
CONTROL
LOGIC
SPSCK
M
LOGIC
S
SS
CPHA
CPOL
SPWOM
Advance Information
287

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