MC68HC05JJ6 Datasheet, PDF (29/216 Pages) Freescale Semiconductor, Inc – General Release Specification Microcontrollers

General Description
voltage on the IRQ pin is above V_DD when the device is released from a
reset condition.
NOTE:
Each of the PA0 through PA3 I/O pins may be connected by the port A
interrupt mask option as an OR function with the IRQ interrupt function.
This capability allows keyboard scan applications where the transitions
or levels on the I/O pins will behave the same as the IRQ pin, except that
active transitions and levels are inverted. The edge or level sensitivity
selected by the mask option for the IRQ pin also applies to the I/O pins
that are ORed to create the IRQ signal. For more information, refer to 4.6
External Interrupts.
1.10 PA0–PA5
These six I/O lines comprise port A, a general-purpose bidirectional I/O
port. This port also has four pins which have keyboard interrupt
capability. All six of these pins have high current source and sink
capability.
All of these pins have software programmable pulldowns which can be
disabled by the software pulldown inhibit mask option.
1.11 PB0–PB7
These eight I/O lines comprise port B, a general-purpose bidirectional
I/O port. This port is also shared with the 16-bit programmable timer
input capture and output compare functions, with the two voltage
comparators in the analog subsystem and with the simple serial
interface (SIOP).
The outputs of voltage comparator 1 can directly drive the PB4 pin when
enabled by mask option; and the PB4 pin has high current source and
sink capability.
All of these pins have software programmable pulldowns which can be
disabled by the software pulldown inhibit mask option.
MC68HC05JJ6/MC68HC05JP6 — Rev. 3.2
Freescale Semiconductor
General Description
General Release Specification
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