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L9965P Datasheet(PDF) 54 Page - STMicroelectronics |
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L9965P Datasheet(HTML) 54 Page - STMicroelectronics |
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54 / 104 page  Table 29. ER capacitor diagnostics Fault type Assertion condition IC reaction to assertion Release condition IC reaction to flag clear Maskable Low capacitance value of ER cap If the converted CAP_VALUE is lower than the capacitance threshold, the low capacitance fault is acknowledged The ERCAP_LOW_C flag is set FAULTN line is asserted Diagnostic routine is stopped at the end of ER cap diagnostic step The fault flag can always be cleared on read FAULTN line is released ER_CAP_EN = 0 masks cyclic diagnostic trigger (but not the on-demand one) ERCAP_FAULTN_MSK masks fault redirection on FAULTN pin High ESR value of ER cap If the converted ESR_VALUE is higher than the ESR threshold, the high ESR fault is acknowledged The ERCAP_HIGH_ESR flag is set FAULTN line is asserted Diagnostic routine is stopped at the end of ER cap diagnostic step The fault flag can always be cleared on read FAULTN line is released ER_CAP_EN = 0 masks cyclic diagnostic trigger (but not the on-demand one) ERCAP_FAULTN_MSK masks fault redirection on FAULTN pin Capacitance or ESR out of range If the converted CAP_VALUE or the converted ESR_VALUE are out of range, the out of range fault is acknowledged The ERCAP_OUT_OF_RANGE flag is set FAULTN line is asserted Diagnostic routine is stopped at the end of ER cap diagnostic step The fault flag can always be cleared on read FAULTN line is released ER_CAP_EN = 0 masks cyclic diagnostic trigger (but not the on-demand one) ERCAP_FAULTN_MSK masks fault redirection on FAULTN pin ER cap diagnostic timeout If the diagnostic time exceeds tER_CAP_DIAG_TO timeout, the diagnostic timeout fault is acknowledged The ERCAP_DIAG_END_TO flag is set FAULTN line is asserted Diagnostic routine will be stopped at the end of ER cap diagnostic step The fault flag can always be cleared on read FAULTN line is released ER_CAP_EN = 0 masks cyclic diagnostic trigger (but not the on-demand one) ERCAP_FAULTN_MSK masks fault redirection on FAULTN pin L9965P Functional description DS14702 - Rev 4 page 54/104 |
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