參數(shù)資料
型號(hào): MC68HC05P4ADWE
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28
封裝: SOIC-28
文件頁(yè)數(shù): 46/72頁(yè)
文件大?。?/td> 400K
代理商: MC68HC05P4ADWE
Instruction Set
MC68HC05P4A Data Sheet, Rev. 7.1
50
Freescale Semiconductor
11.3.4 Bit Manipulation Instructions
The CPU can set or clear any writable bit in the first 256 bytes of memory. Port registers, port data
direction registers, timer registers, and on-chip RAM locations are in the first 256 bytes of memory. The
CPU can also test and branch based on the state of any bit in any of the first 256 memory locations. Bit
manipulation instructions use direct addressing. Table 11-4 lists these instructions.
11.3.5 Control Instructions
These register reference instructions control CPU operation during program execution. Control
instructions, listed in Table 11-5, use inherent addressing.
Table 11-4. Bit Manipulation Instructions
Instruction
Mnemonic
Clear bit
BCLR
Branch if bit clear
BRCLR
Branch if bit set
BRSET
Set bit
BSET
Table 11-5. Control Instructions
Instruction
Mnemonic
Clear carry bit
CLC
Clear interrupt mask
CLI
No operation
NOP
Reset stack pointer
RSP
Return from interrupt
RTI
Return from subroutine
RTS
Set carry bit
SEC
Set interrupt mask
SEI
Stop oscillator and enable IRQ pin
STOP
software interrupt
SWI
Transfer accumulator to index register
TAX
Transfer index register to accumulator
TXA
Stop CPU clock and enable interrupts
WAIT
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參數(shù)描述
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