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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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D17133CS датащи(PDF) 87 Page - NEC |
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D17133CS датащи(HTML) 87 Page - NEC |
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87 / 289 page  CHAPTER 9 REGISTER FILE (RF) 72 Figure 9-2. Relationship Between the Register File and Data Memory 0 1 2 3 4 5 6 7 Data memory 0 Column address 123456789 A B C D E F BANK0 System register Control register Port register 0 1 2 3 Register file 9.2 FUNCTIONS OF THE REGISTER FILE 9.2.1 Functions of the Register File The register file is mainly used as a control register (a register called the control register is allocated in the register file) for specifying conditions for peripheral hardware. This control register is allocated within the register file at address location 00H to 3FH. The rest of the register file (40H to 7FH) overlaps with data memory. As shown in 9.2.3, because of this overlap, this area of the register file is the same as normal memory with one exception: The register file manipulation instructions PEEK and POKE can be used with this area of memory but not with normal data memory. 9.2.2 Control Register Functions The peripheral hardware whose conditions can be controlled by control registers is listed below. For details concerning peripheral hardware and the control register, refer to the section for the peripheral hardware concerned. • Stack • INT pin • Power-on/power-down reset • Comparator • Timer • General ports • Serial interface • Interrupts |
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