MC9S12HY64 Datasheet, PDF (75/792 Pages) Freescale Semiconductor, Inc – S12 Microcontrollers

Port Integration Module (S12HYPIMV1)
Table 2-8. PUCR Register Field Descriptions
Field
Description
6
BKPUE
BKGD pin pull-up Enable—Enable pull-up device on pin
This bit configures whether a pull-up device is activated, if the pin is used as input. If a pin is used as output this bit
has no effect.
1
PUPBE
1 Pull-up device enabled
0 Pull-up device disabled
Port B Pull-down Enable—Enable pull-down devices on all port input pins
This bit configures whether a pull-down device is activated on all associated port input pins. If a pin is used as output
this bit has no effect.
0
PUPAE
1 pull-down device enabled
0 pull-down device disabled
Port A Pull-down Enable—Enable pull-down devices on all port input pins
This bit configures whether a pull-down device is activated on all associated port input pins. If a pin is used as output
this bit has no effect.
1 pull-down device enabled
0 pull-down device disabled
2.3.9 Ports A, B Reduced Drive Register (RDRIV)
Address 0x000D (PRR)
7
R
0
W
Reset
0
1 _{Read: Anytime}
Write: Anytime
6
5
4
3
2
0
0
0
0
0
0
0
0
0
0
= Unimplemented or Reserved
Figure 2-7. Ports ABEK Reduced Drive Register (RDRIV)
Access: User read/write¹
1
0
RDPB
RDPA
0
0
MC9S12HY/HA-Family Reference Manual, Rev. 1.04
Freescale Semiconductor
75