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| 型號： | HC805P18GRS |
| 英文描述： | 68HC805P18 Technical Data |
| 中文描述： | 68HC805P18技術(shù)數(shù)據(jù) |
| 文件頁數(shù)： | 26/111頁 |
| 文件大?。?/td> | 748K |
| 代理商： | HC805P18GRS |
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GENERAL RELEASE SPECIFICATION
MC68HC805P18
Rev. 1.0
CENTRAL PROCESSING UNIT
MOTOROLA
3-3
8
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8
9
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A
16
17
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19
20
3.2.3 Condition Code Register (CCR)
The 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 individually tested by a program, and specific actions can be
taken as a result of their state. Each bit is explained in the following paragraphs.
Half Carry (H)
This bit is set during ADD and ADC operations to indicate that a carry occurred
between bits 3 and 4.
Interrupt (I)
When this bit is set, the timer and external interrupt 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.
Negative (N)
When set, this bit indicates that the result of the last arithmetic, logical, or data
manipulation was negative.
Zero (Z)
When set, this bit indicates that the result of the last arithmetic, logical, or data
manipulation was zero.
Carry/Borrow (C)
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.
H
I
N
Z
C
CCR
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| HC80-8.0MHZ | 功能描述:晶體 CRYSTAL 8MHz RoHS:否 制造商:AVX 頻率:26 MHz 容差: 頻率穩(wěn)定性:50 PPM 負載電容:8 pF 端接類型:SMD/SMT 封裝 / 箱體:1210 (3225 metric) 工作溫度范圍:- 40 C to + 150 C 尺寸:2.5 mm W x 3.2 mm L x 0.85 mm H 封裝:Reel |
| HC80U | 制造商:FOX 制造商全稱:FOX 功能描述:RESISTANCE WELD THRU-HOLE CRYSTAL |
| HC80U-3.6864MHz | 功能描述:晶體 3.6864MHz 20pF RoHS:否 制造商:AVX 頻率:26 MHz 容差: 頻率穩(wěn)定性:50 PPM 負載電容:8 pF 端接類型:SMD/SMT 封裝 / 箱體:1210 (3225 metric) 工作溫度范圍:- 40 C to + 150 C 尺寸:2.5 mm W x 3.2 mm L x 0.85 mm H 封裝:Reel |
| HC80UW | 制造商:FOX 制造商全稱:FOX 功能描述:RESISTANCE WELD MINIATURE CRYSTAL (GULLWING) |
| HC8-100-R | 功能描述:固定電感器 10uH 9.2A 43.6mOhms RoHS:否 制造商:AVX 電感:10 uH 容差:20 % 最大直流電流:1 A 最大直流電阻:0.075 Ohms 工作溫度范圍:- 40 C to + 85 C 自諧振頻率:38 MHz Q 最小值:40 尺寸:4.45 mm W x 6.6 mm L x 2.92 mm H 屏蔽:Shielded 端接類型:SMD/SMT 封裝 / 箱體:6.6 mm x 4.45 mm |
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