User`s manual

User’s Manual External Interrupts E–1

External Interrupts E

Appendix E provides information about using the RabbitCore RCM2200

external interrupts.

The Rabbit 2000 microprocessor has four external

interrupt inputs on Parallel Port E, which is accessed

through pins PE0, PE1, PE4, and PE5 on header J4.

Table E –1 lists the general-purpose Parallel Port E

I/O pins that can be used for external interrupts.

Figure E–1 illustrates these pins.

Table E –1: Rabbit 2000 Parallel Port E Interrupts

Pin Default Use Alternate Use

PE0

General-

Purpose

I/O

INT0A input

PE1 INT1A input

PE4 INT0B input

PE5 INT1B input

Figure E–1: Rabbit 2000 Interrupt Pins

PE0

PE1

PE4

PE5

I/O or INT0B

I/O or INT1B

I/O or INT0A

I/O or INT1A