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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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SAP51D-B-G1-R датащи(PDF) 43 Page - Zentrum Mikroelektronik Dresden AG |
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SAP51D-B-G1-R датащи(HTML) 43 Page - Zentrum Mikroelektronik Dresden AG |
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43 / 62 page  SAP5S / SAP51 Universal Actuator-Sensor Interface IC Data Sheet July 17, 2012 © 2012 Zentrum Mikroelektronik Dresden AG — Rev. 3.1 All rights reserved. The material contained herein may not be reproduced, adapted, merged, translated, stored, or used without the prior written consent of the copyright owner. The information furnished in this publication is PRELIMINARY and subject to changes without notice. 43 of 62 UIN U5R tLOW reset about 15V VPOR1F VPOR1R Figure 9: Power-On Behavior (all modes) Note: The power-on reset circuit has a threshold voltage reference. This reference matches the process tolerance of the logic levels and must not be very accurate. All values depend slightly on the raise and fall time of the supply voltage. 4.13.2. Logic controlled Reset The IC also becomes reset after reception of Reset_Slave or Broadcast_Reset commands, expiration of the (enabled) Communication Watchdog or entering of a forbidden state machine state (i.e. due to heavy EMI). 4.13.3. External Reset The IC can be reset externally by pulling the DSTBn pin LOW for more than a minimum reset time. The external reset input function is provided in every operational mode of the IC – Slave Mode and Master/Repeater Mode. The following signal timings apply: Table 31: Timing of external reset Symbol Parameter Min Max Unit Note tnoRESET DSTBn LOW time for no reset initiation 90 ms tRESET Reset execution time, DSTBn H/L transition to Hi-Z output drives at DO0...DO3, P0…P3 99 ms tINIT State Machine initialization time after reset (E²PROM read out) 2 ms |
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