mc68hc908sr12 Freescale Semiconductor, Inc, mc68hc908sr12 Datasheet - Page 335

• Manufacturer Part Number: mc68hc908sr12
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

19.1 Contents
19.2 Introduction
19.3 Features
MC68HC908SR12•MC68HC08SR12 — Rev. 5.0
Freescale Semiconductor
Data Sheet — MC68HC908SR12•MC68HC08SR12
19.2
19.3
19.4
19.5
19.6
19.7
19.7.1
19.7.2
The external interrupt (IRQ) module provides two maskable interrupt
inputs: IRQ1 and IRQ2.
Features of the IRQ module include:
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A dedicated external interrupt pin, IRQ1
An external interrupt pin shared with a port pin, IRQ2/PTB6
Separate IRQ interrupt control bits for IRQ1 and IRQ2
Hysteresis buffers
Programmable edge-only or edge and level interrupt sensitivity
Automatic interrupt acknowledge
Internal pullup resistor, with disable option on IRQ2
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 335
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 335
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .336
IRQ1 and IRQ2 Pins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 338
IRQ Module During Break Interrupts . . . . . . . . . . . . . . . . . . . 339
IRQ Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 340
IRQ1 Status and Control Register . . . . . . . . . . . . . . . . . . . 340
IRQ2 Status and Control Register . . . . . . . . . . . . . . . . . . . 341
Section 19. External Interrupt (IRQ)
External Interrupt (IRQ)
Data Sheet
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