MC68HC708MP16 Datasheet, PDF (394/398 Pages) Freescale Semiconductor, Inc – Microcontrollers

Glossary
Technical Data
394
synchronous — Refers to logic circuits and operations that are
synchronized by a common reference signal.
system integration module (SIM) — One of a number of modules that
handle a variety of control functions in the modular M68HC08 Family.
The SIM controls mode of operation, resets and interrupts, and
system clock distribution.
TIM — See timer interface module (TIM).
timer interface module (TIM) — A module used to relate events in a
system to a point in time.
timer — A module used to relate events in a system to a point in time.
toggle — To change the state of an output from a logic 0 to a logic 1 or
from a logic 1 to a logic 0.
tracking mode — Mode of low-jitter PLL operation during which the PLL
is locked on a frequency. Also see acquisition mode.
two’s complement — A means of performing binary subtraction using
addition techniques. The most significant bit of a two’s complement
number indicates the sign of the number (1 indicates negative). The
two’s complement negative of a number is obtained by inverting each
bit in the number and then adding 1 to the result.
unbuffered — Utilizes only one register for data; new data overwrites
current data.
unimplemented memory location — A memory location that is not
used. Writing to an unimplemented location has no effect. Reading
an unimplemented location returns an unpredictable value.
Executing an opcode at an unimplemented location causes an illegal
address reset.
V —The overflow bit in the condition code register of the CPU08. The
CPU08 sets the V bit when a two's complement overflow occurs. The
signed branch instructions BGT, BGE, BLE, and BLT use the
overflow bit.
variable — A value that changes during the course of program
execution.
Glossary
MC68HC708MP16 — Rev. 3.1
Freescale Semiconductor