MC68HC708XL36 FREESCALE [Freescale Semiconductor, Inc], MC68HC708XL36 Datasheet - Page 298

• Manufacturer Part Number: MC68HC708XL36
• Description: HCMOS Microcontroller Unit
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

I/O Ports
MC68HC708XL36
298
NOTE:
PF[5:0] — Port F Data Bits
MISO — Master In/Slave Out
Data direction register F (DDRF) does not affect the data direction of port
F pins that are being used by the SPI module. However, the DDRF bits
always determine whether reading port F returns the states of the
latches or the states of the pins. (See Table 7.)
MOSI — Master Out/Slave In
SPSCK — SPI Serial Clock
SS — Slave Select
These read/write bits are software programmable. Data direction of
each port F pin is under the control of the corresponding bit in data
direction register F. Reset has no effect on PF[5:0].
The PF3/MISO pin is the master in/slave out terminal of the SPI
module. When the SPI enable bit, SPE, is clear, the SPI module is
disabled and the PF3/MISO pin is available for general-purpose I/O.
(See
The PF2/MOSI pin is the master out/slave in terminal of the SPI
module. When the SPE bit is clear, the PPF2/MOSI pin is available for
general-purpose I/O. (See
page 201.)
The PF1/SPSCK pin is the serial clock input of the SPI module. When
the SPE bit is clear, the PF1/SPSCK pin is available for
general-purpose I/O.
The PF0/SS pin is the slave select input of the SPI module. When the
SPE bit is clear or when the SPI master bit, SPMSTR, is set, the
PF0/SS pin is available for general-purpose I/O. (See
Peripheral Interface Module
enabled, the DDRF0 bit in data direction register F (DDRF) has no
effect on the PF0/SS pin.
Freescale Semiconductor, Inc.
For More Information On This Product,
Serial Peripheral Interface Module
Go to: www.freescale.com
I/O Ports
Serial Peripheral Interface Module
on page 201.) When the SPI is
on page 201.)
Serial
MOTOROLA
16-ports_a
on