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L99DZ80EP Datasheet(PDF) 44 Page - STMicroelectronics

Part # L99DZ80EP
Description  Automotive door actuator driver
PDF  68 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L99DZ80EP Datasheet(HTML) 44 Page - STMicroelectronics

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L99DZ80EP
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DocID18260 Rev 6
Figure 21. Electrochrome mirror driver with mirror referenced to ECFD for negative discharge
3.22
Watchdog
The watchdog monitors the µC during normal operation within a nominal trigger cycle of
60ms. The watchdog is triggered by toggling the watchdog bit, which restarts the watchdog
timer (i.e. content of the watchdog trigger bit has to be inverted). If no watchdog bit inversion
has been occurred during the watchdog time-out time TWDTO the H-bridge drivers switch
into resistive-low condition, all power outputs are switched off, the electrochrome driver is
disabled and the device enters standby mode.



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