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AT89C51CC02CA-RATUM Datasheet(PDF) 29 Page - ATMEL Corporation |
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AT89C51CC02CA-RATUM Datasheet(HTML) 29 Page - ATMEL Corporation |
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29 / 159 page ![]() 29 AT/T89C51CC02 4126L–CAN–01/08 Registers Table 18. PSW Register PSW (S:D0h) Program Status Word Register Reset Value = 0000 0000b 7654 3210 CY AC F0 RS1 RS0 OV F1 P Bit Number Bit Mnemonic Description 7CY Carry Flag Carry out from bit 1 of ALU operands. 6AC Auxiliary Carry Flag Carry out from bit 1 of addition operands. 5F0 User Definable Flag 0 4 - 3 RS1:0 Register Bank Select bits Refer to Table 17 for bits description. 2OV Overflow Flag Overflow set by arithmetic operations. 1F1 User Definable Flag 1 0P Parity bit Set when ACC contains an odd number of 1’s. Cleared when ACC contains an even number of 1’s. |
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