MC68HC908JL3E Datasheet, PDF (165/226 Pages) Motorola, Inc – Microcontrollers

Technical Data – MC68H(R)C908JL3E/JK3E/JK1E
Section 13. External Interrupt (IRQ)
13.1 Contents
13.2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
13.3 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165
13.4 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
13.4.1 IRQ1 Pin. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167
13.5 IRQ Module During Break Interrupts . . . . . . . . . . . . . . . . . . .169
13.6 IRQ Status and Control Register (INTSCR) . . . . . . . . . . . . . . 169
13.2 Introduction
The IRQ (external interrupt) module provides a maskable interrupt input.
13.3 Features
Features of the IRQ module include the following:
• A dedicated external interrupt pin, IRQ1
• IRQ1 interrupt control bits
• Hysteresis buffer
• Programmable edge-only or edge and level interrupt sensitivity
• Automatic interrupt acknowledge
• Selectable internal pullup resistor
MC68H(R)C908JL3E/JK3E/JK1E — Rev. 2.0
MOTOROLA
External Interrupt (IRQ)
Technical Data
165