参数资料
型号: MC68HC05K0VDW
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PDSO16
封装: SOIC-16
文件页数: 88/154页
文件大小: 1544K
代理商: MC68HC05K0VDW
Central Processor Unit (CPU)
CPU Registers
MC68HC05K0 MC68HC05K1 — Rev. 2.0
Technical Data
MOTOROLA
Central Processor Unit (CPU)
39
3.3.4 Program Counter
The program counter (PC) shown in Figure 3-5 is a 16-bit register that
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.
Figure 3-5. Program Counter
Bit 15
14
13
12
11
10
987654321
Bit 0
Read:
000000
Write:
Reset:
Loaded with vector from $03FE and $03FF
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