參數(shù)資料
型號: MC68HC05RC16P
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP28
封裝: PLASTIC, DIP-28
文件頁數(shù): 52/122頁
文件大小: 445K
代理商: MC68HC05RC16P
Central Processor Unit
Condition Code Register
MC68HC05RC16 — Rev. 3.0
General Release Specification
MOTOROLA
Central Processor Unit
35
3.5 Condition Code Register
The condition code register (CCR) is a 5-bit register in which four bits are
used to indicate the results of the instruction just executed, and the fifth
bit indicates whether interrupts are masked. These bits can be tested
individually by a program, and specific actions can be taken as a result
of their state. Each bit is explained in the following paragraphs.
H — Half Carry
This bit is set during ADD and ADC operations to indicate that a carry
occurred between bits 3 and 4.
I — Interrupt
When this bit is set, timer and external interrupts are masked
(disabled). If an interrupt occurs while this bit is set, the interrupt is
latched and processed as soon as the interrupt bit is cleared.
N — Negative
When set, this bit indicates that the result of the last arithmetic, logical,
or data manipulation was negative.
Z — Zero
When set, this bit indicates that the result of the last arithmetic, logical,
or data manipulation was zero.
C — Carry/Borrow
When set, this bit indicates that a carry or borrow out of the arithmetic
logical unit (ALU) occurred during the last arithmetic operation. This
bit is also affected during bit test and branch instructions and during
shifts and rotates.
CCR
HIN
Z
C
相關(guān)PDF資料
PDF描述
MC68HC05RC16P 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP28
MC68HC05RC8DW 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28
MC68HC05RC8FN 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQCC44
MC68HC05RC8P 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP28
MC68HC05RC17DW 8-BIT, MROM, 2.097 MHz, MICROCONTROLLER, PDSO28
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68HC05RC8 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:General Release Specification
MC68HC05RC8DW 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:General Release Specification
MC68HC05RC8FN 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:General Release Specification
MC68HC05RC8P 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:General Release Specification
MC68HC05SC24 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:Secure 8-bit microcomputer with EEPROM