MC68HC05K1 FREESCALE [Freescale Semiconductor, Inc], MC68HC05K1 Datasheet - Page 37

• Manufacturer Part Number: MC68HC05K1
• Description: HCMOS Microcontroller Unit
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

3.3.1 Accumulator
3.3.2 Index Register
MC68HC05K0 • MC68HC05K1 — Rev. 2.0
The accumulator (A) shown in
register. The accumulator holds operands and results of arithmetic and
non-arithmetic operations.
In the indexed addressing modes, the CPU uses the byte in the index
register (X) to determine the effective address of the operand. (See
10.3.5 Indexed, No
Indexed, 16-Bit
can also serve as a temporary data storage location.
Reset:
Reset:
Read:
Read:
Write:
Write:
Freescale Semiconductor, Inc.
For More Information On This Product,
Bit 7
Bit 7
Central Processor Unit (CPU)
Go to: www.freescale.com
Offset.) The 8-bit index register shown in
6
6
Figure 3-3. Index Register (X)
Offset,
Figure 3-2. Accumulator (A)
5
5
10.3.6 Indexed, 8-Bit
Figure 3-2
Unaffected by reset
Unaffected by reset
4
4
is a general-purpose 8-bit
3
3
Central Processor Unit (CPU)
Offset,
2
2
10.3.7
Figure 3-3
CPU Registers
Technical Data
1
1
Bit 0
Bit 0