MC68HC05K1 FREESCALE [Freescale Semiconductor, Inc], MC68HC05K1 Datasheet - Page 39

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

3.3.4 Program Counter
MC68HC05K0 • MC68HC05K1 — Rev. 2.0
Reset:
Read:
Write:
Bit 15
0
14
0
13
0
The program counter (PC) shown in
contains the address of the next instruction or operand to be fetched.
The six most significant bits of the program counter are ignored internally
and appear as 000000 when stacked.
Normally, the address in the program counter automatically increments
to the next sequential memory location every time an instruction or
operand is fetched. Jump, branch, and interrupt operations load the
program counter with an address other than that of the next sequential
location.
12
0
Freescale Semiconductor, Inc.
For More Information On This Product,
11
0
Figure 3-5. Program Counter
Central Processor Unit (CPU)
10
Loaded with vector from $03FE and $03FF
Go to: www.freescale.com
0
9
8
7
6
Figure 3-5
5
4
Central Processor Unit (CPU)
is a 16-bit register that
3
2
CPU Registers
Technical Data
1
Bit 0