參數(shù)資料
型號: MC68HC05K1DWR2
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PDSO16
封裝: SOIC-16
文件頁數(shù): 88/154頁
文件大?。?/td> 1544K
代理商: MC68HC05K1DWR2
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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