參數(shù)資料
型號: MC68HSC05K0DW
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, MICROCONTROLLER, PDSO16
封裝: SOIC-16
文件頁數(shù): 91/154頁
文件大?。?/td> 1544K
代理商: MC68HSC05K0DW
Central Processor Unit (CPU)
Arithmetic/Logic Unit (ALU)
MC68HC05K0 MC68HC05K1 — Rev. 2.0
Technical Data
MOTOROLA
Central Processor Unit (CPU)
41
N — Negative Flag
The CPU sets the negative flag when an arithmetic operation, logical
operation, or data manipulation produces a negative result. Reset has
no effect on the negative flag.
Z — Zero Flag
The CPU sets the zero flag when an arithmetic operation, logical
operation, or data manipulation produces a result of $00. Reset has
no effect on the zero flag.
C — Carry/Borrow Flag
The CPU sets the carry/borrow flag when an addition operation
produces a carry out of bit 7 of the accumulator or when a subtraction
operation requires a borrow. Some logical operations and data
manipulation instructions also clear or set the carry/borrow flag. Reset
has no effect on the carry/borrow flag.
3.4 Arithmetic/Logic Unit (ALU)
The ALU performs the arithmetic and logical operations defined by the
instruction set. The binary arithmetic circuits decode instructions and set
up the ALU for the selected operation.
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