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EM6812F2TP24B 数据表(PDF) 55 Page - EM Microelectronic - MARIN SA |
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EM6812F2TP24B 数据表(HTML) 55 Page - EM Microelectronic - MARIN SA |
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55 / 81 page ![]() R EM6812 Copyright © 2005, EM Microelectronic-Marin SA 55 www.emmicroelectronic.com 13.2.3.2 External Signal State Condition The Counter is active as long as the specified input pin reads ‘1’. In Zero-Stop mode it will stop as soon as the counter reaches 0. The external state condition is first synchronized with the negative edge counter clock. The positive edge of this synchronized signal will enable the timer start. The basic restart conditions as described in 13.2.1 and 13.2.2 apply. Figure 30. External start: State condition, Auto-Reload mode. Figure 31. External start: State condition, Zero-Stop mode. ClkIn Ext. Start (State) TimXLoad TimXStatus XX XX 03 03 02 01 00 03 02 01 00 03 02 Internal(Start) synchronized Timer Start Ext. Start (State) ClkIn TimXLoad TimXStatus XX XX 03 03 02 01 00 Timer Start Internal(Start) synchronized |
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