M68ICS08KX datasheet(64/77 Pages) MOTOROLA

64 / 77 page

M68ICS08KX In-Circuit Simulator

User’s Manual

MOTOROLA

Glossary

User’s Manual — M68ICS08KX In-Circuit Simulator

Glossary

8-bit MCU — A microcontroller whose data is communicated over a data bus

made up of eight separate data conductors. Members of the

MC68HC908 Family of microcontrollers are 8-bit MCUs.

A — An abbreviation for the accumulator of the MC68HC908KX8 MCU.

accumulator — An 8-bit register of the MC68HC908KX8 CPU. The contents

of this register may be used as an operand of an arithmetic or logical

instruction.

assembler — A software program that translates source code mnemonics into

opcodes that can then be loaded into the memory of a microcontroller.

assembly language — Instruction mnemonics and assembler directives that

are meaningful to programmers and can be translated into an object

code program that a microcontroller understands. The CPU uses

opcodes and binary numbers to specify the operations that make up a

computer program. Humans use assembly language mnemonics to

represent instructions. Assembler directives provide additional

information such as the starting memory location for a program. Labels

are used to indicate an address or binary value.

ASCII — American Standard Code for Information Interchange. A widely

accepted correlation between alphabetic and numeric characters and

specific 7-bit binary numbers.

breakpoint — During debugging of a program, it is useful to run instructions

until the CPU gets to a specific place in the program, and then enter a

debugger program. A breakpoint is established at the desired address

by temporarily substituting a software interrupt (SWI) instruction for

the instruction at that address. In response to the SWI, control is passed

to a debugging program.

byte — A set of exactly eight binary bits.

M68ICS08KX Datasheet(PDF) 64 Page - Motorola, Inc