Freescale Semiconductor MC68HC08KH12 User Manual
Page 213
MC68HC(7)08KH12
—
Rev. 1.1
Advance Information
Freescale Semiconductor
213
Advance Information — MC68HC(7)08KH12
Section 14. External Interrupt (IRQ)
14.1 Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 213
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 214
IRQ1/V
PP
Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 215
IRQ Module During Break Interrupts . . . . . . . . . . . . . . . . . . . 217
IRQ Status and Control Register (ISCR) . . . . . . . . . . . . . . . . 217
14.2 Introduction
The IRQ module provides a non-maskable interrupt input.
14.3 Features
Features of the IRQ module include the following:
•
A Dedicated External Interrupt Pin (IRQ1/V
PP
)
•
IRQ1 Interrupt Control Bits
•
Hysteresis Buffer
•
Programmable Edge-only or Edge and Level Interrupt Sensitivity
•
Automatic Interrupt Acknowledge
•
IRQ1/V
PP
pin includes internal pullup resistor