MC68HC708MP16 Datasheet, PDF (383/398 Pages) Freescale Semiconductor, Inc – Microcontrollers

Technical Data — MC68HC708MP16
Glossary
A — See accumulator (A).
accumulator (A) — An 8-bit general-purpose register in the CPU08.
The CPU08 uses the accumulator to hold operands and results of
arithmetic and logic operations.
acquisition mode — A mode of PLL operation during startup before the
PLL locks on a frequency. Also see tracking mode.
address bus — The set of wires that the CPU or DMA uses to read and
write memory locations.
addressing mode — The way that the CPU determines the operand
address for an instruction. The M68HC08 CPU has 16 addressing
modes.
ALU — See arithmetic logic unit (ALU).
arithmetic logic unit (ALU) — The portion of the CPU that contains the
logic circuitry to perform arithmetic, logic, and manipulation
operations on operands.
asynchronous — Refers to logic circuits and operations that are not
synchronized by a common reference signal.
baud rate — The total number of bits transmitted per unit of time.
BCD — See binary-coded decimal (BCD).
binary — Relating to the base 2 number system.
binary number system — The base 2 number system, having two
digits, 0 and 1. Binary arithmetic is convenient in digital circuit design
because digital circuits have two permissible voltage levels, low and
high. The binary digits 0 and 1 can be interpreted to correspond to
the two digital voltage levels.
MC68HC708MP16 — Rev. 3.1
Freescale Semiconductor
Glossary
Technical Data
383