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Motore di ricerca datesheet componenti elettronici |
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Motore di ricerca datesheet componenti elettronici |
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FS23 Scheda tecnica(PDF) 85 Page - NXP Semiconductors |
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FS23 Scheda tecnica(HTML) 85 Page - NXP Semiconductors |
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85 / 230 page  NXP Semiconductors FS23 Safety system basis chip (SBC) with power management, CAN FD and LIN transceivers 0 No effect on the pin 1 (default) The pin RSTB/FS0B/LIMP0 is asserted Reset condition POR Table 46. FCCUx error impact configuration...continued 19.3.3 FCCU12 electrical characteristics TA = −40 °C to 125 °C, unless otherwise specified. VSUP = 5.5 V to 40 V, unless otherwise specified. All voltages referenced to ground. Symbol Parameter Min Typ Max Unit FCCU1 static characteristics FCCU1VIH FCCU1 high-level input voltage - - 0.7 x VDDIO V FCCU1VIL FCCU1 low-level input voltage 0.3 x VDDIO - - V FCCU1HYST FCCU1 input voltage hysteresis 0.1 - 0.6 V FCCU1RPD FCCU1 internal pulldown resistor 400 800 1300 kΩ FCCU1,2 dynamic characteristics FCCU1, 2 filter time when PWM monitoring is activated 0.47 - 0.79 µs FCCU12TERR FCCU1, 2 filter time when level monitoring is activated 4.0 6.0 9.0 µs FCCU12GF FCCU1, 2 good frequency range (PWM detection) 10.0 22.5 45.0 kHz FCCU12GTHL FCCU1, 2 good THIGH and TLOW range (half period) 11.1 25.0 50.0 µs FCCU12BLF FCCU1, 2 bad-low frequency range (PWM detection) - - 5 kHz FCCU12BHF FCCU1, 2 bad-high frequency range (PWM detection) 90 - - kHz FCCU12HFDET FCCU1, 2 high-level detection time (PWM HF detection) 6.0 8.0 10.0 µs FCCU12LFDET FCCU1, 2 low-level detection time (PWM LF detection) 51 64 80 µs Table 47. FCCU12 electrical characteristics 19.4 Voltage supervisor The voltage supervisor is in charge of overvoltage and undervoltage monitoring of all the supply generated by the FS23, Vx (x from 1 to 3), and of VMON_EXT input pin. When an overvoltage occurs on a FS23 regulator, the regulator is switched off until the fault is removed. The overvoltage monitoring is activated before the power- up slots start, and the undervoltage monitoring is activated once the device is in Normal mode. UV/OV flags are then reported accordingly. V0MON monitoring on VMON_EXT pin is enabled by OTP (V0MON_EN_OTP). 19.4.1 V0MON (VMON_EXT) monitoring The VMON_EXT input pin can be connected to an external regulator. The regulator connected to VMON_EXT must be at least 1 V to be compatible with overvoltage and undervoltage monitoring thresholds. An external resistor bridge must be used to divide the regulator voltage if higher than 1 V, and set the middle point to 1 V. The external resistors accuracy must be at least ±1 %, to ensure a total accuracy of ±2.5 % with the internal thresholds accuracy (±1.5 %). FS23 All information provided in this document is subject to legal disclaimers. © 2024 NXP B.V. All rights reserved. Product data sheet Rev. 7.0 — 16 October 2024 Document feedback 85 / 230 |
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