XC68HC705JJ7 Motorola, XC68HC705JJ7 Datasheet - Page 84

• Manufacturer Part Number: XC68HC705JJ7
• Description: MICROCONTROLLER
• Manufacturer: Motorola

Parallel Input/Output
7.2 Introduction
7.3 Port A
Advance Information
84
The MC68HC705JJ7 has 14 bidirectional input/output (I/O) pins which
form two parallel I/O ports, A and B. The MC68HC705JP7 has
22 bidirectional I/O pins which form three parallel I/O ports, A, B and C.
Each I/O pin is programmable as an input or an output. The contents of
the data direction registers determine the data direction of each of the
I/O pins. All I/O pins have software programmable pulldown devices
which can be enabled or disabled globally by the SWPDI bit in the mask
option register (MOR).
Port A is a 6-bit, general-purpose, bidirectional I/O port with these
features:
•
•
•
•
Individual programmable pulldown devices
High current sinking capability on all port A pins, with a maximum
total for port A
High current sourcing capability on all port A pins, with a maximum
total for port A
External interrupt capability (pins PA3–PA0)
Parallel Input/Output
MC68HC705JJ7 • MC68HC705JP7 — REV 4
MOTOROLA