mc68hc916y3 Freescale Semiconductor, Inc, mc68hc916y3 Datasheet - Page 390

• Manufacturer Part Number: mc68hc916y3
• Description: Mc68hc16y3 16 Bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

D.2.12 Port F Data Register
PORTF0— Port F Data Register 0
PORTF1— Port F Data Register 1
D.2.13 Port F Data Direction Register
DDRF — Port F Data Direction Register
D.2.14 Port F Pin Assignment Register
PFPAR — Port F Pin Assignment Register
D-12
MOTOROLA
15
15
15
RESET:
RESET:
RESET:
This register can be accessed in two locations and can be read or written at any time.
A write to this register is stored in an internal data latch, and if any pin in the
corresponding port is configured as an output, the value stored for that bit is driven out
on the pin. A read of this data register returns the value at the pin only if the pin is
configured as a discrete input. Otherwise, the value read is the value stored in the
register. Bits [15:8] are unimplemented and will always read zero.
This register controls the direction of the port F pin drivers when pins are configured
for I/O. Setting a bit configures the corresponding pin as an output; clearing a bit
configures the corresponding pin as an input. This register can be read or written at
any time. Bits [15:8] are unimplemented and will always read zero.
This register determines the function of port F pins. Setting a bit assigns the
corresponding pin to a control signal; clearing a bit assigns the pin to port F. Bits [15:8]
are unimplemented and will always read zero. Refer to Table D-5.
NOT USED
NOT USED
NOT USED
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
8- AND 16-BIT EXPANDED MODES
REGISTER SUMMARY
SINGLE-CHIP MODE
8
8
8
PFPA7
DATA9 DATA9 DATA9 DATA9 DATA9 DATA9 DATA9 DATA9
DDF7
PF7
U
7
7
0
7
0
PFPA6
DDF6
PF6
U
6
6
0
6
0
PFPA5
DDF5
PF5
U
5
5
0
5
0
PFPA4
DDF4
PF4
U
4
4
0
4
0
PFPA3
DDF3
PF3
U
3
3
0
3
0
MC68HC16Y3/916Y3
PFPA2
DDF2
USER’S MANUAL
PF2
2
U
2
0
2
0
$YFFA1B
$YFFA1D
$YFFA1F
$YFFA19
PFPA1
DDF1
PF1
U
1
1
0
1
0
PFPA0
DDF0
PF0
U
0
0
0
0
0