MC68HC705C8A Datasheet, PDF (30/222 Pages) Motorola, Inc – HCMOS Microcontroller Unit

General Description
1.7.3 External Reset Pin (RESET)
A logic 0 on the bidirectional RESET pin forces the MCU to a known
startup state. The RESET pin contains an internal Schmitt trigger as part
of its input to improve noise immunity. See Section 5. Resets.
1.7.4 External Interrupt Request Pin (IRQ)
The IRQ pin is an asynchronous external interrupt pin. The IRQ pin
contains an internal Schmitt trigger as part of its input to improve noise
immunity. See 4.3.2 External Interrupt (IRQ).
1.7.5 Input Capture Pin (TCAP)
The TCAP pin is the input capture pin for the on-chip capture/compare
timer. The TCAP pin contains an internal Schmitt trigger as part of its
input to improve noise immunity. See Section 8. Capture/Compare
Timer.
1.7.6 Output Compare Pin (TCMP)
The TCMP pin is the output compare pin for the on-chip
capture/compare timer. See Section 8. Capture/Compare Timer.
1.7.7 Port A I/O Pins (PA7–PA0)
These eight I/O lines comprise port A, a general-purpose, bidirectional
I/O port. The pins are programmable as either inputs or outputs under
software control of the data direction registers. See 7.3 Port A.
1.7.8 Port B I/O Pins (PB7–PB0)
These eight I/O pins comprise port B, a general-purpose, bidirectional
I/O port. The pins are programmable as either inputs or outputs under
software control of the data direction registers. Port B pins also can be
configured to function as external interrupts. See 7.4 Port B.
Technical Data
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General Description
MC68HC705C8A — Rev. 2.0
MOTOROLA