mc68hc05jb4p Freescale Semiconductor, Inc, mc68hc05jb4p Datasheet - Page 111

• Manufacturer Part Number: mc68hc05jb4p
• Description: Mc68hc705jb4 Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

12.1.13 Bit Manipulation Instructions
12.1.14 Control Instructions
MC68HC05JB4
REV 2
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 12-4 lists these instructions.
These register reference instructions control CPU operation during program
execution. Control instructions, listed in Table 12-5, use inherent addressing.
Freescale Semiconductor, Inc.
Clear Bit
Branch if Bit Clear
Branch if Bit Set
Set Bit
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Table 12-4. Bit Manipulation Instructions
Clear Carry Bit
Clear Interrupt Mask
No Operation
Reset Stack Pointer
Return from Interrupt
Return from Subroutine
Set Carry Bit
Set Interrupt Mask
Stop Oscillator and Enable IRQ Pin
Software Interrupt
Transfer Accumulator to Index Register
Transfer Index Register to Accumulator
Stop CPU Clock and Enable Interrupts
Table 12-5. Control Instructions
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INSTRUCTION SET
Instruction
Instruction
February 24, 1999
GENERAL RELEASE SPECIFICATION
Mnemonic
Mnemonic
STOP
WAIT
BRCLR
NOP
BRSET
CLC
RSP
RTS
SEC
SWI
TAX
TXA
CLI
RTI
SEI
BCLR
BSET