s908az32ag2cfue Freescale Semiconductor, Inc, s908az32ag2cfue Datasheet - Page 165

• Manufacturer Part Number: s908az32ag2cfue
• Description: M68hc08 Microcontrollers 8-bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Chapter 17
Serial Peirpheral Interface (SPI)
17.1 Introduction
This section describes the serial peripheral interface (SPI) module, which allows full-duplex, synchronous,
serial communications with peripheral devices.
17.2 Features
Features of the SPI module include:
17.3 Pin Name and Register Name Conventions
The generic names of the SPI input/output (I/O) pins are:
The SPI shares four I/O pins with a parallel I/O port. The full name of an SPI pin reflects the name of the
shared port pin.
the text that follows.
Freescale Semiconductor
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Full-Duplex Operation
Master and Slave Modes
Double-Buffered Operation with Separate Transmit and Receive Registers
Four Master Mode Frequencies (Maximum = Bus Frequency ÷ 2)
Maximum Slave Mode Frequency = Bus Frequency
Serial Clock with Programmable Polarity and Phase
Two Separately Enabled Interrupts with CPU Service:
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Mode Fault Error Flag with CPU Interrupt Capability
Overflow Error Flag with CPU Interrupt Capability
Programmable Wired-OR Mode
I
SS (slave select)
SPSCK (SPI serial clock)
MOSI (master out slave in)
MISO (master in slave out)
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C (Inter-Integrated Circuit) Compatibility
SPRF (SPI Receiver Full)
SPTE (SPI Transmitter Empty)
Full SPI Pin Name
SPI Generic Pin Name
Table 17-1
shows the full names of the SPI I/O pins. The generic pin names appear in
Table 17-1. Pin Name Conventions
MC68HC908AZ32A Data Sheet, Rev. 2
PTE5/MISO
MISO
PTE6/MOSI
MOSI
PTE4/SS
SS
PTE7/SPSCK
SPSCK
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