M68ICS08KX datasheet(68/77 Pages) MOTOROLA

68 / 77 page

Glossary

M68ICS08KX In-Circuit Simulator

User’s Manual

MOTOROLA

Glossary

MCU because there is no way to expose the EPROM to a UV light.

PC — Abbreviation for program counter CPU register of the

MC68HC908KX8.

program counter — The CPU register that holds the address of the next

instruction or operand that the CPU will use.

RAM — Random access memory. Any RAM location can be read or written

by the CPU. The contents of a RAM memory location remain valid

until the CPU writes a different value or until power is turned off.

registers — Memory locations that are wired directly into the CPU logic

instead of being part of the addressable memory map. The CPU always

has direct access to the information in these registers. The CPU

registers in the MC68HC908KX8 are A (8-bit accumulator), X (8-bit

index register), CCR (condition code register containing the H, I, N, Z,

and C bits), SP (stack pointer), and PC (program counter). Memory

locations that hold status and control information for on-chip

peripherals are called I/O and control registers.

reset — Reset is used to force a computer system to a known starting point and

to force on-chip peripherals to known starting conditions.

S record — A Motorola standard format used for object code files.

simulator — A computer program that copies the behavior of a real MCU.

source code — See source program.

SP — Abbreviation for stack pointer CPU register in the MC68HC908KX8

MCU.

source program — A text file containing instruction mnemonics, labels,

comments, and assembler directives. The source file is processed by an

assembler to produce a composite listing and an object file

representation of the program.

stack pointer — A CPU register that holds the address of the next available

storage location on the stack.

TTL — Transistor-to-transistor logic.

M68ICS08KX Datasheet(PDF) 68 Page - Motorola, Inc