s908ey16g2vfar Freescale Semiconductor, Inc, s908ey16g2vfar Datasheet - Page 179
s908ey16g2vfar
Manufacturer Part Number
s908ey16g2vfar
Description
M68hc08 Microcontrollers Microcontroller
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.S908EY16G2VFAR.pdf
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Chapter 15
Serial Peripheral Interface (SPI) Module
15.1 Introduction
This section describes the serial peripheral interface (SPI) module, which allows full-duplex, synchronous,
serial communications with peripheral devices.
15.2 Features
Features of the SPI module include:
15.3 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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•
•
•
•
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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:
–
–
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)
2
C (inter-integrated circuit) compatibility
SPRF (SPI receiver full)
SPTE (SPI transmitter empty)
SPI Generic Pin Name
Table 15-1
Full SPI Pin Name
Alternative Pin
MC68HC908EY16A • MC68HC908EY8A Data Sheet, Rev. 1
shows the full names of the SPI I/O pins. The generic pin names appear in
Table 15-1. Pin Name Conventions
PTC0/MISO
MISO
PTB3
PTC1/MOSI
MOSI
PTB4
PTA6/SS
PTC2
SS
PTA5/SPSCK
SPSCK
PTB5
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