Digilent chipKIT MX3 Reference Manual page 16

chipKIT™ MX3 Board Reference Manual
Refer to the PIC32 Family Reference Manual, Section 8, Interrupts for more information on the operation of the
external interrupts.
These are accessed using the attachInterrupt() and detachInterrupt() functions when using the MPIDE software,.
The interrupt number is specified using the numbers 0-4, or preferably, the symbols EXT_INT0 through EXT_INT4.
The following gives Pmod connector position, chipKIT pin number, and microcontroller I/O port and bit number:
 INT0 – JB-04, digital pin 11, RF6
 INT1 – JE-07, digital pin 36, RD8
 INT2 – JB-01, digital pin 8, RD9
 INT3 – JD-03, digital pin 26, RD10
 INT4 – JD-09, digital pin 30, RD11
15 RTCC
The PIC32 microcontroller contains a low frequency oscillator and Real Time Clock/Calendar, RTCC, circuit that can
be used to maintain time and date information. The operation of the RTCC requires a 32.768Khz frequency source.
The crystal X2 position, just above and on the left of the PIC32 microcontroller, IC5, is provided for the user to
solder in a 32Khz watch crystal. The Citizen CFS206-32.768KDZF-UB is a crystal part that can be used in this
location.
CHIPKIT and the CHIPKIT Logo are trademarks or registered trademarks of Microchip Technology Incorporated in the U.S. and
other countries, and are used under license.
Copyright Digilent, Inc. All rights reserved.
Other product and company names mentioned may be trademarks of their respective owners.
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