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| 型号： | MC68HC05E1MP |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP28 |
| 封装： | PLASTIC, DIP-28 |
| 文件页数： | 29/86页 |
| 文件大小： | 709K |
| 代理商： | MC68HC05E1MP |
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CPU Core
Instruction Set
MC68HC05E1 — Revision 2.0
General Release Specication
MOTOROLA
CPU Core
35
3.4.4 Bit Manipulation Instructions
The MCU is capable of setting or clearing any writable bit which resides
in the first 256 bytes of the memory space where all port registers, port
DDRs, timer, timer control, and on-chip RAM reside. An additional
feature allows the software to test and branch on the state of any bit
within these 256 locations. The bit set, bit clear and bit test, and branch
functions are all implemented with a single instruction. For test and
branch instructions, the value of the bit tested is also placed in the carry
bit of the condition code register. These instructions are also
read-modify-write instructions. Do not bit manipulate write-only
locations. Refer to the following list for bit manipulation instructions.
Function
Branch if Bit n is Set
Branch if bit n is Clear
Set Bit n
Clear Bit n
Mnemonic
BRSET n (n = 0. . .7)
BRCLR n (n = 0. . .7)
BSET n (n = 0. . .7)
BCLR n (n = 0. . .7)
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For More Information On This Product,
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