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数据搜索系统，热门电子元器件搜索 |
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STM8S 数据表(PDF) 33 Page - STMicroelectronics |
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STM8S 数据表(HTML) 33 Page - STMicroelectronics |
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33 / 467 page  DocID14587 Rev 14 33/467 RM0016 Memory and register map 33 3.2 Register description abbreviations In the register descriptions of each chapter in this reference manual, the following abbreviations are used: Table 4. List of abbreviations Abbreviation Description read/write (rw) Software can read and write to these bits. read-only (r) Software can only read these bits. write only (w) Software can only write to this bit. Reading the bit returns a meaningless value. read/write once (rwo) Software can only write once to this bit but can read it at any time. Only a reset can return this bit to its reset value. read/clear (rc_w1) Software can read and clear this bit by writing 1. Writing ‘0’ has no effect on the bit value. read/clear (rc_w0) Software can read and clear this bit by writing 0. Writing ‘1’ has no effect on the bit value. read/set (rs) Software can read and set this bit. Writing ‘0’ has no effect on the bit value. read/clear by read (rc_r) Software can read this bit. Reading this bit automatically clears it to ‘0’. Writing ‘0’ has no effect on the bit value. Reserved (Res.) Reserved bit, must be kept at reset value. |
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