mc68hc05jb4p Freescale Semiconductor, Inc, mc68hc05jb4p Datasheet - Page 105

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

12.1
12.1.1 Inherent
12.1.2 Immediate
MC68HC05JB4
REV 2
This section describes the addressing modes and instruction types.
ADDRESSING MODES
The CPU uses eight addressing modes for flexibility in accessing data. The
addressing modes define the manner in which the CPU finds the data required to
execute an instruction. The eight addressing modes are the following:
Inherent instructions are those that have no operand, such as return from interrupt
(RTI) and stop (STOP). Some of the inherent instructions act on data in the CPU
registers, such as set carry flag (SEC) and increment accumulator (INCA).
Inherent instructions require no memory address and are one byte long.
Immediate instructions are those that contain a value to be used in an operation
with the value in the accumulator or index register. Immediate instructions require
no memory address and are two bytes long. The opcode is the first byte, and the
immediate data value is the second byte.
•
•
•
•
•
•
•
•
Inherent
Immediate
Direct
Extended
Indexed, No Offset
Indexed, 8-Bit Offset
Indexed, 16-Bit Offset
Relative
Freescale Semiconductor, Inc.
For More Information On This Product,
INSTRUCTION SET
Go to: www.freescale.com
INSTRUCTION SET
February 24, 1999
SECTION 12
GENERAL RELEASE SPECIFICATION