Chapter 2 Port Integration Module (S12XEP100PIMV1)
MC9S12XE-Family Reference Manual , Rev. 1.19
158
Freescale Semiconductor
2.3.74
Port AD0 Reduced Drive Register 1 (RDR1AD0)
2.3.75
Port AD0 Pull Up Enable Register 0 (PER0AD0)
Address 0x0275
Access: User read/write
(1)
1. Read: Anytime.
Write: Anytime.
7
6
5
4
3
2
1
0
R
RDR1AD07
RDR1AD06
RDR1AD05
RDR1AD04
RDR1AD03
RDR1AD02
RDR1AD01
RDR1AD00
W
Reset
0
0
0
0
0
0
0
0
Figure 2-72. Port AD0 Reduced Drive Register 1 (RDR1AD0)
Table 2-70. RDR1AD0 Register Field Descriptions
Field
Description
7-0
RDR1AD0
Port AD0 reduced drive
—Select reduced drive for Port AD0 outputs
This register configures the drive strength of Port AD0 output pins 7 through 0 as either full or reduced. If a pin is
used as input this bit has no effect.
1 Reduced drive selected (approx. 1/5 of the full drive strength).
0 Full drive strength enabled.
Address 0x0276
Access: User read/write
(1)
1. Read: Anytime.
Write: Anytime.
7
6
5
4
3
2
1
0
R
PER0AD07
PER0AD06
PER0AD05
PER0AD04
PER0AD03
PER0AD02
PER0AD01
PER0AD00
W
Reset
0
0
0
0
0
0
0
0
Figure 2-73. Port AD0 Pull Device Up Register 0 (PER0AD0)
Table 2-71. PER0AD0 Register Field Descriptions
Field
Description
7-0
PER0AD0
Port AD0 pull device enable
—Enable pull devices on input pins
These bits configure whether a pull device is activated, if the associated pin is used as an input. This bit has no effect
if the pin is used as an output. Out of reset no pull device is enabled.
1 Pull device enabled.
0 Pull device disabled.
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:
S12XE
products
in
208
MAPBGA
packages