mc68hc705j2 Freescale Semiconductor, Inc, mc68hc705j2 Datasheet - Page 25

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

4.3.2 Immediate
4.3.3 Direct
MOTOROLA
4-6
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. Table 4-2 lists the instructions
that use the immediate addressing mode.
Direct instructions can access any of the first 256 memory addresses with only
two bytes. The first byte is the opcode and the second byte is the low byte of the
operand's address. In the direct addressing mode, the CPU automatically uses
$00 as the high byte of the operand's address.
three-byte instructions that use direct addressing to access the operand and
relative addressing to specify a branch destination.
instructions that use the direct addressing mode.
Table 4-2. Immediate Addressing Instructions
Add with Carry
Add
Logical AND
Bit Test Memory with Accumulator
Compare Accumulator with Memory
Compare Index Register with Memory
Exclusive OR Memory with Accumulator
Load Accumulator from Memory
Load Index Register from Memory
Inclusive OR
Subtract with Carry
Subtract
CENTRAL PROCESSOR UNIT
Instruction
BRSET and BRCLR are
Mnemonic
CMP
EOR
ORA
ADD
SBC
ADC
AND
CPX
LDA
LDX
SUB
BIT
Table 4-3 lists the
MC68HC705J2