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S912XEG128J2MAA Datasheet, PDF (115/1324 Pages) Freescale Semiconductor, Inc – Microcontrollers | |||
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Chapter 2 Port Integration Module (S12XEPIMV1)
Table 2-14. PUCR Register Field Descriptions
Field
Description
7
PUPKE
Pull-up Port K EnableâEnable pull-up devices on all Port K input pins
This bit conï¬gures whether pull-up devices are activated, if the pins are used as inputs. This bit has no effect if the
pins are used as outputs. Out of reset the pull-up devices are enabled.
1 Pull-up devices enabled.
0 Pull-up devices disabled.
6
BKPUE
BKGD pin pull-up EnableâEnable pull-up devices on BKGD pin
This bit conï¬gures whether a pull-up device is activated, if the pin is used as input. This bit has no effect if the pin is
used as outputs. Out of reset the pull-up device is enabled.
1 Pull-up device enabled.
0 Pull-up device disabled.
5
Reservedâ
4
PUPEE
Pull-up Port E EnableâEnable pull-up devices on all Port E input pins except on pins 5 and 6 which have pull-down
devices only enabled during reset. This bit has no effect on these pins.
This bit conï¬gures whether pull-up devices are activated, if the pins are used as inputs. This bit has no effect if the
pins are used as outputs. Out of reset the pull-up devices are enabled.
1 Pull-up devices enabled.
0 Pull-up devices disabled.
3
PUPDE
Pull-up Port D EnableâEnable pull-up devices on all Port D input pins
This bit conï¬gures whether pull-up devices are activated, if the pins are used as inputs. This bit has no effect if the
pins are used as outputs. Out of reset the pull-up devices are disabled.
1 Pull-up devices enabled.
0 Pull-up devices disabled.
2
PUPCE
Pull-up Port C EnableâEnable pull-up devices on all Port C input pins
This bit conï¬gures whether pull-up devices are activated, if the pins are used as inputs. This bit has no effect if the
pins are used as outputs. Out of reset the pull-up devices are disabled.
1 Pull-up devices enabled.
0 Pull-up devices disabled.
1
PUPBE
Pull-up Port B EnableâEnable pull-up devices on all Port B input pins
This bit conï¬gures whether pull-up devices are activated, if the pins are used as inputs. This bit has no effect if the
pins are used as outputs. Out of reset the pull-up devices are disabled.
1 Pull-up devices enabled.
0 Pull-up devices disabled.
0
PUPAE
Pull-up Port A EnableâEnable pull-up devices on all Port A input pins
This bit conï¬gures whether pull-up devices are activated, if the pins are used as inputs. This bit has no effect if the
pins are used as outputs. Out of reset the pull-up devices are disabled.
1 Pull-up devices enabled.
0 Pull-up devices disabled.
MC9S12XE-Family Reference Manual Rev. 1.25
Freescale Semiconductor
115
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