mc68hc705j2 Freescale Semiconductor, Inc, mc68hc705j2 Datasheet - Page 31

• Manufacturer Part Number: mc68hc705j2
• Description: 8-bit Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

4.4 Instruction Set
4.4.1 Register/Memory Instructions
MOTOROLA
4-12
The MCU uses all the instructions available in the M146805 CMOS Family plus
the unsigned multiply (MUL) instruction. The MUL instruction allows unsigned
multiplication of the contents of the accumulator and the index register. The
CPU stores the high-order product in the index register, and the low-order
product in the accumulator.
The MCU instructions fall into the following five categories:
Most of these instructions use two operands.
accumulator or the index register. The CPU finds the other operand in memory
using one of the addressing modes. Most register/memory instructions use the
following addressing modes:
Table 4-7 lists the register/memory instructions.
• Register/memory
• Read-modify-write
• Jump/branch
• Bit manipulation
• Control
• Immediate
• Direct
• Extended
• Indexed, no offset
• Indexed, 8-bit offset
• Indexed, 16-bit offset
CENTRAL PROCESSOR UNIT
One operand is in either the
MC68HC705J2