MC9S08DZ60 Datasheet, PDF (269/396 Pages) Freescale Semiconductor, Inc – Microcontrollers

Chapter 13
Serial Peripheral Interface (S08SPIV3)
13.1 Introduction
The serial peripheral interface (SPI) module provides for full-duplex, synchronous, serial communication
between the MCU and peripheral devices. These peripheral devices can include other microcontrollers,
analog-to-digital converters, shift registers, sensors, memories, etc.
The SPI runs at a baud rate up to the bus clock divided by two. Software can poll the status flags, or SPI
operation can be interrupt driven.
All devices in the MC9S08DZ60 Series MCUs contain one SPI module, as shown in the following block
diagram.
NOTE
Ensure that the SPI should not be disabled (SPE=0) at the same time as a bit
change to the CPHA bit. These changes should be performed as separate
operations or unexpected behavior may occur.
MC9S08DZ60 Series Data Sheet, Rev. 1 Draft E
Freescale Semiconductor
PRELIMINARY
269
Subject to Change