51795B datasheet(84/100 Pages) MICROCHIP

84 / 100 page

PICkit™ 3 User’s Guide

DS51795B-page 84

 2010 Microchip Technology Inc.

IEEE

Institute of Electrical and Electronics Engineers.

Import

Bring data into the MPLAB IDE from an outside source, such as from a hex file.

Initialized Data

Data which is defined with an initial value. In C,

int myVar=5;

defines a variable which will reside in an initialized data section.

Instruction Set

The collection of machine language instructions that a particular processor

understands.

Instructions

A sequence of bits that tells a central processing unit to perform a particular operation

and can contain data to be used in the operation.

Internal Linkage

A function or variable has internal linkage if it can not be accessed from outside the

module in which it is defined.

International Organization for Standardization

An organization that sets standards in many businesses and technologies, including

computing and communications.

Interrupt

A signal to the CPU that suspends the execution of a running application and transfers

control to an Interrupt Service Routine (ISR) so that the event may be processed. Upon

completion of the ISR, normal execution of the application resumes.

Interrupt Handler

A routine that processes special code when an interrupt occurs.

Interrupt Request

An event which causes the processor to temporarily suspend normal instruction exe-

cution and to start executing an interrupt handler routine. Some processors have

several interrupt request events allowing different priority interrupts.

Interrupt Service Routine

ALU30, C18, C30 – A function that handles an interrupt.

IDE – User-generated code that is entered when an interrupt occurs. The location of

the code in program memory will usually depend on the type of interrupt that has

occurred.

Interrupt Vector

Address of an interrupt service routine or interrupt handler.

IRQ

See Interrupt Request.

ISO

See International Organization for Standardization.

ISR

See Interrupt Service Routine.

51795B Datasheet(PDF) 84 Page - Microchip Technology

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