mc68hc912d60c Freescale Semiconductor, Inc, mc68hc912d60c Datasheet - Page 94

• Manufacturer Part Number: mc68hc912d60c
• Description: Hc12 Microcontrollers
• Manufacturer: Freescale Semiconductor, Inc

Bus Control and Input/Output
PUCR — Pull-Up Control Register
Technical Data
94
RESET:
PUPH
Bit 7
1
PUPG
6
1
These bits select pull-up resistors for any pin in the corresponding port
that is currently configured as an input. This register is not in the map in
peripheral mode.
Read and write anytime.
PUPH — Pull-Up or Pull-Down Port H Enable
PUPG — Pull-Up or Pull-Down Port G Enable
PUPE — Pull-Up Port E Enable
PUPB — Pull-Up Port B Enable
PUPA — Pull-Up Port A Enable
This bit has no effect if port B is being used as part of the address/data
bus (the pull-ups are inactive).
This bit has no effect if port A is being used as part of the address/data
bus (the pull-ups are inactive).
0 = Port H pull-ups are disabled.
1 = Enable pull-up/down devices for all port H input pins.
0 = Port G pull-ups are disabled.
1 = Enable pull-up/down devices for all port G input pins.
0 = Port E pull-ups on PE7 and PE[3:0] are disabled.
1 = Enable pull-up devices for port E input pins PE7 and PE[3:0].
0 = Port B pull-ups are disabled.
1 = Enable pull-up devices for all port B input pins.
0 = Port A pull-ups are disabled.
1 = Enable pull-up devices for all port A input pins.
5
0
0
Bus Control and Input/Output
PUPE
4
1
3
0
0
2
0
0
PUPB
MC68HC912D60A — Rev. 3.1
1
0
Freescale Semiconductor
PUPA
Bit 0
0
$000C