參數(shù)資料
型號(hào)： MC68HC05X4CDW
廠商： MOTOROLA INC
元件分類： 微控制器/微處理器
英文描述： HCMOS Microcontroller Unit
中文描述： 8-BIT, MROM, 2.2 MHz, MICROCONTROLLER, PDSO28
封裝： PLASTIC, SOIC-28
文件頁數(shù)： 135/156頁
文件大?。?/td> 926K
代理商： MC68HC05X4CDW
MC68HC0X4 Rev 1.0
MOTOROLA
Glossary
135
Glossary
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.
binary-coded decimal (BCD)
— A notation that uses 4-bit binary numbers to represent the 10
decimal digits and that retains the same positional structure of a decimal number. For
example,
234 (decimal) = 0010 0011 0100 (BCD)
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68HC05X4DW 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit
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MC68HC08AB16AD 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Microcontrollers
MC68HC08AZ0 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:Advance Information
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