mcf51jf128 Freescale Semiconductor, Inc, mcf51jf128 Datasheet - Page 1241

• Manufacturer Part Number: mcf51jf128
• Description: Mcf51jf128 Reference Manual
• Manufacturer: Freescale Semiconductor, Inc

Chapter 49
External Interrupt (IRQ)
49.1 Introduction
The IRQ (External Interrupt) module provides an interrupt input.
49.1.1 Features
The IRQ includes these distinctive features:
49.1.2 Modes of Operation
The IRQ module is mode independent and will continue to operate in all user modes. In
the low power STOP mode, the IRQ input becomes an asynchronous path.
Freescale Semiconductor, Inc.
• IP Bus V2.0 compliant
• External interrupt pin (IRQ)
• IRQ pin can be selected as falling edge and low level or rising edge and high level
• Separate IRQ pin enable
• Software enabled interrupt
• Programmable falling edge (or rising edge) only, or both falling edge and low level
• Exit from low-power modes
• Wake-up request to internal module(s) independent of interrupt enable
• Software control of whether on-chip pullup/pulldown device is enabled on IRQ pin
(or both rising edge and high level) interrupt sensitivity
MCF51JF128 Reference Manual, Rev. 2, 03/2011
Preliminary
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