SAP5SD-A-G1-T Datasheet, PDF (43/63 Pages) List of Unclassifed Manufacturers – Universal Actuator-Sensor Interface IC

SAP5S / SAP51
Universal Actuator-Sensor Interface IC
UIN
about 15V
U5R
V_POR1F
V_POR1R
t_LOW
reset
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
t_noRESET
t_RESET
t_INIT
DSTBn LOW time for no reset initiation
Reset execution time,
DSTBn H/L transition to Hi-Z output drives at DO0...DO3, P0…P3
State Machine initialization time after reset (E²PROM read out)
90 ms
99 ms
2 ms
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
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