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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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ADT7490ARQZ-R7 数据表(PDF) 66 Page - ON Semiconductor |
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ADT7490ARQZ-R7 数据表(HTML) 66 Page - ON Semiconductor |
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66 / 75 page  ADT7490 http://onsemi.com 66 Table 71. Register 0x7B — TACH Pulses per Revolution Register (Power−On Default = 0x55) Bit No. Mnemonic R/W Description [1:0] FAN1 R/W Sets number of pulses to be counted when measuring Fan 1 speed. Can be used to determine fan pulses per revolution for unknown fan type. Bit Code Pulses Counted 00 01 10 11 1 2 (default) 3 4 [3:2] FAN2 R/W Sets number of pulses to be counted when measuring Fan 2 speed. Can be used to determine fan pulses per revolution for unknown fan type. Bit Code Pulses Counted 00 01 10 11 1 2 (default) 3 4 [5:4] FAN3 R/W Sets number of pulses to be counted when measuring Fan 3 speed. Can be used to determine fan pulses per revolution for unknown fan type. Bit Code Pulses Counted 00 01 10 11 1 2 (default) 3 4 [7:6] FAN4 R/W Sets number of pulses to be counted when measuring Fan 4 speed. Can be used to determine fan pulses per revolution for unknown fan type. Bit Code Pulses Counted 00 01 10 11 1 2 (default) 3 4 |
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