MC9S12HY64 Datasheet, PDF (100/792 Pages) Freescale Semiconductor, Inc – S12 Microcontrollers

Port Integration Module (S12HYPIMV1)
2.3.42 Port H Reduced Drive Register (RDRH)
Address 0x0263
R
W
Reset
7
RDRH7
0
1 _{Read: Anytime.}
Write: Anytime.
6
RDRH6
5
RDRH5
4
RDRH4
3
RDRH3
2
RDRH2
0
0
0
0
0
Figure 2-40. Port H Reduced Drive Register (RDRH)
Access: User read/write¹
1
0
RDRH1
RDRH0
0
0
Table 2-39. RDRH Register Field Descriptions
Field
7-0
RDRH
Description
Port H reduced drive—Select reduced drive for outputs
This register configures the drive strength of 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 (1/6 of the full drive strength).
0 Full drive strength enabled.
2.3.43 Port H Pull Device Enable Register (PERH)
Address 0x0264
R
W
Reset
7
PERH7
1
1 _{Read: Anytime.}
Write: Anytime.
6
PERH6
5
PERH5
4
PERH4
3
PERH3
2
PERH2
1
1
1
1
1
Figure 2-41. Port H Pull Device Enable Register (PERH)
Access: User read/write¹
1
0
PERH1
PERH0
1
1
Table 2-40. PERH Register Field Descriptions
Field
7-0
PERH
Description
Port H 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 all pull device is enabled.
1 Pull device enabled.
0 Pull device disabled.
MC9S12HY/HA-Family Reference Manual, Rev. 1.04
100
Freescale Semiconductor