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V61558P Datasheet(PDF) 1 Page - EM Microelectronic - MARIN SA |
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V61558P Datasheet(HTML) 1 Page - EM Microelectronic - MARIN SA |
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1 / 12 page  EM MICROELECTRONIC--MARIN SA V6155 1 Extremely Accurate Power Surveillance, Software Monitoring and Sleep Mode Detection Features n Can-bus sleep mode detector n Standby mode, maximum current 50 mA n Reset output guaranteed for V DD voltage down to 1.2 V n Comparator for voltage monitoring,voltage reference 1.275 V n ± 1.2% voltage reference accuracy at +25 °C n ± 2.5% voltage reference accuracy from −40 to +85 °C (3 to 5.5 V) n Programmable reset voltage monitoring n Programmable power-on reset (POR) delay n Watchdog with programmable time windows guarantees a minimum time and a maximum time between software clearing of the watchdog n Time base accuracy ± 10% n System enable output offers added security n TTL / CMOS compatible n -40 to +85 °C temperature range n On request extended temperature range, −40 to +125 °C n DIP8 and SO8 packages Description The V6155 offers a high level of integration by voltage monitoring and software monitoring in an 8 lead package. A comparator monitors the voltage applied at the V IN input comparing it with an internal 1.275 V reference. The power-on reset function is initialized after V IN reaches 1.275 V and takes the reset output inactive after T POR depending of external resistance. The reset output goes active low when the V IN voltage is less than 1.275 V. The RES and EN outputs are guaranteed to be in a correct state for a supply voltage as low as 1.2 V. The watchdog function monitors software cycle time and execution. If software clears the watchdog too quickly (incorrect cycle time) or too slowly (incorrect execution), it will cause the system to be reset. The system enable output prevents critical control functions being activated until software has successfully cleared the watchdog three times. Such a security could be used to prevent motor controls being energized on repeated resets of a faulty system. If the microcontroller does not work that means no signal on the TCL input the V6155 goes in a standby mode (CAN-bus sleep detector). Applications n Automotive systems n Cellular telephones n Security systems n Battery powered products n High efficiency linear power supplies n Industrial electronics Typical Operating Configuration Pin Assignment R V SS EN TCL V IN V DD Fig. 1 100 nF V6155 RES GND DIP8 / SO8 V DD R TCL RES EN Fig. 2 V6155 V SS V IN NC |
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