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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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HC705CT4GRS/D 数据表(PDF) 32 Page - NXP Semiconductors |
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HC705CT4GRS/D 数据表(HTML) 32 Page - NXP Semiconductors |
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32 / 152 page  Central Processing Unit General Release Specification MC68HC705CT4 — Rev. 2.0 32 Central Processing Unit MOTOROLA Figure 3-2. Stacking Order 3.3 Accumulator The accumulator (A) is a general-purpose 8-bit register used to hold operands and results of arithmetic calculations or data manipulations. 3.4 Index Register The index register (X) is an 8-bit register used for the indexed addressing value to create an effective address. The index register may also be used as a temporary storage area. INDEX REGISTER PCL ACCUMULATOR CONDITION CODE REGISTER PCH 11 1 70 STACK I N T E R R U P T DECREASING UNSTACK R E T U R N INCREASING NOTE: Since the stack pointer decrements during pushes, the PCL is stacked first, followed by PCH, etc. Pulling from the stack is in the reverse order. MEMORY ADDRESSES MEMORY ADDRESSES A 70 X 70 Freescale Semiconductor, Inc. For More Information On This Product, Go to: www.freescale.com |
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