XC68HC705JB3 Motorola, XC68HC705JB3 Datasheet - Page 52

• Manufacturer Part Number: XC68HC705JB3
• Description: MICROCONTROLLER
• Manufacturer: Motorola

GENERAL RELEASE SPECIFICATION
7.3.3 Port-C Pull-down/up Register
MOTOROLA
7-6
DDRCx — PCx Data Direction
VROFF — USB 3.3V Voltage Reference
OCMPO — OCMP Output Enable
With the pull-up/down mask option selected, each pin in Port-C has an internal
pull-down resistor which can be enabled by writing a ‘0’ to the corresponding bit in
the Port-C pull-down/up control register (PDURC) at location $000F.
PDRCx — PCx Pin Pull-down Enable
PDURC
$000F
See USB section for details.
See 16-BIT TIMER section for details.
reset:
1 = Port pin set as output.
0 = Port pin set as input.
1 = Disable 3.3V regulator.
0 = Enables 3.3V regulator.
1 = PC0 is OCMP pin, OCF from 16-bit timer output compare.
0 = PC0 is standard I/O pin, from Port-C data register.
1 = Internal pull-down disabled.
0 = Internal pull-down enabled.
W
R
BIT 7
0
BIT 6
0
INPUT/OUTPUT PORTS
November 5, 1998
BIT 5
0
BIT 4
0
PDRC3
BIT 3
0
PDRC2
BIT 2
0
PDRC1
BIT 1
0
MC68HC05JB3
PDRC0
BIT 0
REV 1
0