Freescale Semiconductor MCF5480 - Manual (Page 70)

MCF548x Reference Manual, Rev. 3
1-12 Freescale Semiconductor
1.4.11.2 Interrupt Controller
The interrupt controller on the MCF548x family can support up to 63 interrupt sources. The interrupt
controller is organized as seven levels with nine interrupt sources per level. Each interrupt source has a
unique interrupt vector, and 56 of the 63 sources of a given controller provide a programmable level [1-7]
and priority within the level.
• Support for up to 63 interrupt sources organized as follows:
— 56 fully-programmable interrupt sources
— 7 fixed-level interrupt sources
• Seven external interrupt signals
• Unique vector number for each interrupt source
• Ability to mask any individual interrupt source or all interrupt sources (global mask-all)
• Support for hardware and software interrupt acknowledge (IACK) cycles
• Combinatorial path to provide wake-up from stop mode
1.4.11.3 General Purpose I/O
All peripheral I/O pins on the MCF548x family are multiplexed with GPIO, adding flexibility and usability
to all signals on the chip.