General Purpose I/O Module
MCF52235 ColdFire® Integrated Microcontroller Reference Manual, Rev. 6
Freescale Semiconductor
14-5
14.6
Register Descriptions
14.6.1
Port Output Data Registers (PORTn)
The PORT
n
registers store the data to be driven on the corresponding port
n
pins when the pins are
configured for digital output.
The PORT
n
registers with a full 8-bit implementation are shown in
n
registers use fewer than 8 bits. Their bit definitions are shown in
, and
. The fields are described in
, which applies to all PORT
n
registers.
The PORT
n
registers are read/write. At reset, all bits in the PORT
n
registers are set.
Reading a PORT
n
register returns the current values in the register, not the port
n
pin values.
PORT
n
bits can be set by setting the PORT
n
register, or by setting the corresponding bits in the
PORT
n
P/SET
n
register. They can be cleared by clearing the PORT
n
register, or by clearing the
corresponding bits in the CLR
n
register.
IPSBAR
Offsets:
0x10_000A (PORTAN)
0x10_0014 (PORTDD)
0x10_0016 (PORTGP)
Access: User read/write
7
6
5
4
3
2
1
0
R
PORT
n
7
PORT
n
6
PORT
n
5
PORT
n
4
PORT
n
3
PORT
n
2
PORT
n
1
PORT
n
0
W
Reset:
1
1
1
1
1
1
1
1
Figure 14-2. Port Output Data Registers with Bits 7:0 Implemented (PORTAN, PORTDD, PORTGP)
IPSBAR
Offsets:
0x10_000B (PORTAS)
0x10_000E (PORTTA)
0x10_000F (PORTTC)
0x10_0010 (PORTTD)
0x10_0011 (PORTUA)
0x10_0012 (PORTUB)
0x10_0013 (PORTUC)
Access: User read/write
7
6
5
4
3
2
1
0
R
0
0
0
0
PORT
n
3
PORT
n
2
PORT
n
1
PORT
n
0
W
Reset:
0
0
0
0
1
1
1
1
Figure 14-3. Port Output Data Registers with Bits 3:0 Implemented (PORTAS, PORTTA, PORTTC, PORTTD,
PORTUA, PORTUB, PORTUC)
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:MCF52234CVM60,
MCF52235CVM60
