參數(shù)資料
型號(hào): DRM011
英文描述: Direct Current Ignition Reference Design Designer Reference Manual
中文描述: 直流點(diǎn)火參考設(shè)計(jì)設(shè)計(jì)參考手冊(cè)
文件頁數(shù): 64/72頁
文件大?。?/td> 1177K
代理商: DRM011
Glossary
Designer Reference Manual
DRM010 — Rev 0
64
Glossary
MOTOROLA
SP (16-bit stack pointer)
PC (16-bit program counter)
CCR (8-bit condition code register)
cycle time
— The period of the operating frequency: t
CYC
= 1/f
OP
.
D
— See “accumulators (A and B or D).”
decimal number system
— Base 10 numbering system that uses the digits zero through nine.
duty cycle
— A ratio of the amount of time the signal is on versus the time it is off. Duty cycle is
usually represented by a percentage.
ECT
— See “enhanced capture timer.”
EEPROM
— Electrically erasable, programmable, read-only memory. A nonvolatile type of
memory that can be electrically erased and reprogrammed.
EPROM
— Erasable, programmable, read-only memory. A nonvolatile type of memory that can
be erased by exposure to an ultraviolet light source and then reprogrammed.
enhanced capture timer (ECT)
— The HC12 Enhanced Capture Timer module has the features
of the HC12 Standard Timer module enhanced by additional features in order to enlarge
the field of applications.
exception
— An event such as an interrupt or a reset that stops the sequential execution of the
instructions in the main program.
fetch
— To copy data from a memory location into the accumulator.
firmware
— Instructions and data programmed into nonvolatile memory.
free-running counter
— A device that counts from zero to a predetermined number, then rolls
over to zero and begins counting again.
full-duplex transmission
— Communication on a channel in which data can be sent and
received simultaneously.
hexadecimal
— Base 16 numbering system that uses the digits 0 through 9 and the letters A
through F.
high byte
— The most significant eight bits of a word.
illegal address
— An address not within the memory map
illegal opcode
— A nonexistent opcode.
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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