參數(shù)資料
型號: MC68HSC05J1ADW
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO20
封裝: SOIC-20
文件頁數(shù): 58/128頁
文件大小: 1650K
代理商: MC68HSC05J1ADW
Central Processor Unit (CPU)
CPU Registers
MC68HC05J1A — Rev. 3.0
Technical Data
Central Processor Unit (CPU)
3.3.1 Accumulator
The accumulator (A) shown in Figure 3-2 is a general-purpose 8-bit
register. The CPU uses the accumulator to hold operands and results of
arithmetic and non-arithmetic operations.
Figure 3-2. Accumulator (A)
3.3.2 Index Register
In the indexed addressing modes, the CPU uses the byte in the index
register (X) shown in Figure 3-3 to determine the conditional address of
Offset, and 9.3.7 Indexed, 16-Bit Offset for more information on
indexed addressing.
The 8-bit index register also can serve as a temporary data storage
location.
Figure 3-3. Index Register (X)
Bit 7
654321
Bit 0
Read:
Write:
Reset:
Unaffected by reset
Bit 7
654321
Bit 0
Read:
Write:
Reset:
Unaffected by reset
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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