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TLE6365 Datasheet(PDF) 9 Page - Infineon Technologies AG |
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TLE6365 Datasheet(HTML) 9 Page - Infineon Technologies AG |
9 / 18 page TLE 6365 Data Sheet 9 Rev. 1.9, 2007-07-30 Circuit Description Below some important sections of the TLE 6365 are described in more detail. Power On Reset In order to avoid any system failure, a sequence of several conditions has to be passed. In case of V CC power down (VCC < VRT for t > tRR) a logic LOW signal is generated at the pin RO to reset an external microcontroller. When the level of V CC reaches the reset threshold V RT, the signal at RO remains LOW for the Power-up reset delay time tRD before switching to HIGH. If V CC drops below the reset threshold VRT for a time extending the reset reaction time t RR, the reset circuit is activated and a power down sequence of period t RD is initiated. The reset reaction time tRR avoids wrong triggering caused by short “glitches” on the V CC-line. Figure 3 Reset Function AET03325.VSD Invalid Invalid Start Up Invalid V CC t V PG V RT Typ. 4.70 V Typ. 4.65 V 1 V < t RR < t RD t RO ON Delay H L Started ON Delay Stopped t RD t RR t RD ON Delay Power Start-Up Normal Failed N Failed Normal |
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