XC888LM datasheet(63/144 Pages) INFINEON

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XC886/888CLM

Functional Description

Data Sheet

V0.9, 2006-12

3.4

Interrupt System

The XC800 Core supports one non-maskable interrupt (NMI) and 14 maskable interrupt

requests. In addition to the standard interrupt functions supported by the core, e.g.,

configurable interrupt priority and interrupt masking, the XC886/888 interrupt system

provides extended interrupt support capabilities such as the mapping of each interrupt

vector to several interrupt sources to increase the number of interrupt sources

supported, and additional status registers for detecting and determining the interrupt

source.

3.4.1

Interrupt Source

Figure 13 to Figure 17 give a general overview of the interrupt sources and nodes, and

their corresponding control and status flags.

Figure 13

Non-Maskable Interrupt Request Sources

0073

NMIWDT

NMICON.0

WDT Overflow

>=1

Non

Maskable

Interrupt

NMIPLL

NMICON.1

PLL Loss of Lock

NMIFLASH

Flash Operation

Complete

NMIVDD

NMICON.4

VDD Pre-Warning

FNMIWDT

NMIISR.0

FNMIPLL

NMIISR.1

FNMIFLASH

NMIISR.2

FNMIVDD

NMIISR.4

NMIVDDP

NMICON.5

VDDP Pre-Warning

FNMIVDDP

NMIISR.5

NMIECC

NMICON.6

Flash ECC Error

FNMIECC

NMIISR.6

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