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W7100A датащи(PDF) 13 Page - WIZnet Co., Ltd |
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W7100A датащи(HTML) 13 Page - WIZnet Co., Ltd |
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13 / 160 page ![]() W7100A Datasheet v1.2.5 13 ACC (0xE0) 7 6 5 4 3 2 1 0 Reset ACC.7 ACC.6 ACC.5 ACC.4 ACC.3 ACC.2 ACC.1 ACC.0 0x00 Figure 1.2 Accumulator A Register The B register is used during multiplication and division operations. In other cases, this register is used as normal SFR. B (0xF0) 7 6 5 4 3 2 1 0 Reset B.7 B.6 B.5 B.4 B.3 B.2 B.1 B.0 0x00 Figure 1.3 B Register The ALU performs arithmetic operations such as addition, subtraction, multiplication, and division, and other operations such as increment, decrement, BCD-decimal-add-adjust, and compare. Logic unit uses AND, OR, Exclusive OR, complement, and rotation to perform different operations. The Boolean processor performs bit operations such as set, clear, complement, jump-if-not-set, jump-if-set-and-clear, and move to/from carry. PSW (0xD0) 7 6 5 4 3 2 1 0 Reset CY AC F0 RS1 RS0 OV F1 P 0x00 Figure 1.4 Program Status Word Register CY Carry flag AC Auxiliary carry F0 General purpose flag 0 RS[1:0] Register bank select bits RS[1:0] Function Description 00 -Bank 0, data address 0x00 - 0x07 01 -Bank 1, data address 0x08 - 0x0F 10 -Bank 2, data address 0x10 - 0x17 11 -Bank 3, data address 0x18 - 0x1F OV Overflow flag F1 General purpose flag 1 P Parity flag Figure 1.5 PSW Register The PSW register contains several bits that can reflect the current state of MCU. |
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