mcf51ac256a Freescale Semiconductor, Inc, mcf51ac256a Datasheet - Page 120
mcf51ac256a
Manufacturer Part Number
mcf51ac256a
Description
Mcf51ac Flexis
Manufacturer
Freescale Semiconductor, Inc
Datasheet
1.MCF51AC256A.pdf
(566 pages)
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Parallel Input/Output Control
6.5.5.5
6.5.6
Port F is an 8-bit input/output port and also shares its pins with the RGPIO, FTM1 and FTM2 peripherals.
On reset, the pins will default to the input state and under the I/O control. Enabling any of the shared
peripherals will take priority control over the pins. See
Port F is controlled by the registers listed below.
6.5.6.1
6-16
Reset:
Reset:
PTEDSn
Field
•
•
•
•
•
•
•
•
7–0
W
W
R
R
PTF0 shares its pin with RGPIO8 and FTM1CH2.
PTF1 shares its pin with RGPIO9 and FTM1CH3.
PTF2 shares its pin with RGPIO10 and FTM1CH4.
PTF3 shares its pin with RGPIO11 and FTM1CH5.
PTF4 shares its pin with RGPIO12 and FTM2CH0.
PTF5 shares its pin with RGPIO13 and FTM2CH1.
PTF6 shares its pin with RGPIO14 and FTM1FLT.
PTF7 shares its pin with RGPIO15.
PTEDS7
PTFD7
Port F Registers
Output Drive Strength Selection for Port E Bits — Each of these control bits selects between low and high
output drive for the associated PTE pin. For port E pins that are configured as inputs, these bits have no effect.
0 Low output drive strength selected for port E bit n.
1 High output drive strength selected for port E bit n.
Port E Drive Strength Selection Register (PTEDS)
0
Port F Data Register (PTFD)
0
7
7
MCF51AC256 ColdFire Integrated Microcontroller Reference Manual, Rev. 5
Figure 6-26. Drive Strength Selection for Port E Register (PTEDS)
PTEDS6
PTFD6
0
0
6
6
Table 6-25. PTEDS Register Field Descriptions
Figure 6-27. Port F Data Register (PTFD)
PTEDS5
PTFD5
0
0
5
5
PTEDS4
PTFD4
0
0
4
4
Description
Table 2-1
PTEDS3
PTFD3
3
0
3
0
for details on pin function priorities.
PTEDS2
PTFD2
0
0
2
2
PTEDS1
Freescale Semiconductor
PTFD1
0
0
1
1
PTEDS0
PTFD0
0
0
0
0
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