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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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H8SX1663 数据表(PDF) 84 Page - Renesas Technology Corp |
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H8SX1663 数据表(HTML) 84 Page - Renesas Technology Corp |
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84 / 1158 page  Section 2 CPU Rev.1.00 Jun. 07, 2006 Page 32 of 1102 REJ09B0294-0100 General register ER7 has the function of stack pointer (SP) in addition to its general-register function, and is used implicitly in exception handling and subroutine branches. Figure 2.11 shows the stack. Free area Stack area SP (ER7) Figure 2.11 Stack 2.5.2 Program Counter (PC) PC is a 32-bit counter that indicates the address of the next instruction the CPU will execute. The length of all CPU instructions is 16 bits (one word) or a multiple of 16 bits, so the least significant bit is ignored. (When the instruction code is fetched, the least significant bit is regarded as 0. |
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