MC68HC05X4 Datasheet, PDF (35/156 Pages) Motorola, Inc – HCMOS Microcontroller Unit

Freescale Semiconductor, Inc.
CPU
Instruction Types
When using the Motorola assembler, the programmer does not need to
calculate the offset, because the assembler determines the proper offset
and verifies that it is within the span of the branch.
Instruction Types
The MCU instructions fall into the following five categories:
• Register/Memory Instructions
• Read-Modify-Write Instructions
• Jump/Branch Instructions
• Bit Manipulation Instructions
• Control Instructions
Register/Memory
Instructions
These instructions operate on CPU registers and memory locations.
Most of them use two operands. One operand is in either the
accumulator or the index register. The CPU finds the other operand in
memory.
Table 1. Register/Memory Instructions
Instruction
Add Memory Byte and Carry Bit to Accumulator
Add Memory Byte to Accumulator
AND Memory Byte with Accumulator
Bit Test Accumulator
Compare Accumulator
Compare Index Register with Memory Byte
EXCLUSIVE OR Accumulator with Memory Byte
Load Accumulator with Memory Byte
Load Index Register with Memory Byte
Multiply
OR Accumulator with Memory Byte
Mnemonic
ADC
ADD
AND
BIT
CMP
CPX
EOR
LDA
LDX
MUL
ORA
9-cpu
CPU
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MC68HC05X4 Rev 1.0