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SN8P1602AS bảng dữ liệu(PDF) 27 Page - SONiX Technology Company |
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SN8P1602AS bảng dữ liệu(HTML) 27 Page - SONiX Technology Company |
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27 / 94 page ![]() SN8P1600 8-bit micro-controller SONiX TECHNOLOGY CO., LTD Page 27 Revision 1.94 PROGRAM FLAG The PFLAG includes carry flag (C), decimal carry flag (DC) and zero flag (Z). If the result of operating is zero or there is carry, borrow occurrence, then these flags will be set to PFLAG register. 086H Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 PFLAG - - - - - C DC Z Read/Write - - - - - R/W R/W R/W After reset - - - - - 0 0 0 CARRY FLAG C = 1: When executed arithmetic addition with overflow or executed arithmetic subtraction without borrow or executed rotation instruction with logic “1” shifting out. C = 0: When executed arithmetic addition without overflow or executed arithmetic subtraction with borrow or executed rotation instruction with logic “0” shifting out. DECIMAL CARRY FLAG DC = 1: If executed arithmetic addition with overflow of low nibble or executed arithmetic subtraction without borrow of low nibble. DC = 0: If executed arithmetic addition without overflow of low nibble or executed arithmetic subtraction with borrow of low nibble. ZERO FLAG Z = 1: When the content of ACC or target memory is zero after executing instructions involving a zero flag. Z = 0: When the content of ACC or target memory is not zero after executing instructions involving a zero flag. |
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