MC68HC708XL36 FREESCALE [Freescale Semiconductor, Inc], MC68HC708XL36 Datasheet - Page 297

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MC68HC708XL36

Manufacturer Part Number
MC68HC708XL36
Description
HCMOS Microcontroller Unit
Manufacturer
FREESCALE [Freescale Semiconductor, Inc]
Datasheet
Port F
Port F Data
Register
15-ports_a
MOTOROLA
Function:
Alternate
Address: $0009
When bit DDREx is a logic 1, reading address $0008 reads the PEx data
latch. When bit DDREx is a logic 0, reading address $0008 reads the
voltage level on the pin. The data latch can always be written, regardless
of the state of its data direction bit.
the port E pins.
PORTF is a 6-bit, special function port that shares four of its pins with
the serial peripheral interface module (SPI).
PORTF contains the data latches for the six port F pins.
Reset:
1. Writing affects data register, but does not affect input.
Read:
Write:
Data Direction Bit
Freescale Semiconductor, Inc.
For More Information On This Product,
Bit 7
0
0
1
Go to: www.freescale.com
Figure 17. Port F Data Register (PORTF)
= Unimplemented
6
0
I/O Ports
Table 6. Port E Pin Operation
PF5
Input, high-impedance
5
I/O Pin Mode
Output
Unaffected by Reset
PF4
4
Table 6
MISO
PF3
3
summarizes the operation of
MOSI
PF2
Read
Latch
2
Access to Data Bit
Pin
MC68HC708XL36
SPSCK
PF1
1
Latch
Write
Latch
I/O Ports
Bit 0
(1)
PF0
Port F
SS
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