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C167CS-4RM 数据表(PDF) 83 Page - Infineon Technologies AG |
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C167CS-4RM 数据表(HTML) 83 Page - Infineon Technologies AG |
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83 / 517 page ![]() C167CS Derivatives The Central Processing Unit (CPU) User’s Manual 4-33 V2.0, 2000-07 The Constant Zeros Register ZEROS All bits of this bit-addressable register are fixed to ‘0’ by hardware. This register can be read only. Register ZEROS can be used as a register-addressable constant of all zeros, i.e. for bit manipulation or mask generation. It can be accessed via any instruction, which is capable of addressing an SFR. The Constant Ones Register ONES All bits of this bit-addressable register are fixed to ‘1’ by hardware. This register can be read only. Register ONES can be used as a register-addressable constant of all ones, i.e. for bit manipulation or mask generation. It can be accessed via any instruction, which is capable of addressing an SFR. ZEROS Zeros Register SFR (FF1CH/8EH) Reset Value: 0000H 15 14 13 12 11 10 9876 543210 00000 00000 000000 r r r r r r r r r r r r r r r r ONES Ones Register SFR (FF1EH/8FH) Reset Value: FFFFH 15 14 13 12 11 10 9876 543210 11111 11111 111111 r r r r r r r r r r r r r r r r |
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