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FS23 Scheda tecnica(PDF) 228 Page - NXP Semiconductors |
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FS23 Scheda tecnica(HTML) 228 Page - NXP Semiconductors |
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228 / 230 page  NXP Semiconductors FS23 Safety system basis chip (SBC) with power management, CAN FD and LIN transceivers Contents 1 General description .........................................2 2 Features and benefits ..................................... 3 3 Simplified application diagram .......................4 4 Ordering information .......................................5 4.1 Part numbers definition ......................................5 4.2 Part numbers list ............................................... 6 5 Applications ..................................................... 8 6 Internal block diagram .................................... 9 7 Pinout information .........................................11 7.1 Pinout ...............................................................11 7.2 Pin description ................................................. 12 7.3 Connection of unused pins ..............................13 8 Limiting values ...............................................15 9 Electrostatic discharge ................................. 16 10 Thermal characteristics ................................ 17 11 Operating range and current consumption .................................................. 18 11.1 Supply voltage ................................................. 18 11.2 Current consumption ....................................... 19 12 Functional description .................................. 20 12.1 Simplified state machine ..................................20 12.2 Operation and power modes ........................... 21 12.3 Main state machine description ....................... 23 12.4 Detailed functional state diagram .................... 24 12.5 INIT state machine .......................................... 25 12.6 Power sequencing ........................................... 26 12.7 Debug and OTP modes ...................................27 12.7.1 Electrical characteristics .................................. 29 12.8 MCU programming .......................................... 30 12.9 Best of supply ..................................................30 12.9.1 Functional description ......................................30 12.9.2 BOS electrical characteristics ..........................32 13 Power management .......................................33 13.1 HVBUCK: High-voltage buck regulator ............ 33 13.1.1 Functional description ......................................33 13.1.2 HVBUCK clock management ...........................35 13.1.2.1 Description .......................................................35 13.1.2.2 Spread spectrum ............................................. 35 13.1.3 Application schematic ......................................36 13.1.4 Electrical characteristics .................................. 36 13.1.5 HVBUCK efficiency ..........................................39 13.2 HVLDO1: High-voltage linear regulator 1 ........ 41 13.2.1 Functional description ......................................41 13.2.2 Application schematic ......................................42 13.2.3 Electrical characteristics .................................. 42 13.3 HVLDO2: High-voltage linear regulator 2 ........ 44 13.3.1 Functional description ......................................44 13.3.2 Application schematic ......................................44 13.3.3 Electrical characteristics .................................. 45 13.4 HVLDO3: High-voltage linear regulator 3 ........ 46 13.4.1 Functional description ......................................46 13.4.2 Application schematic ......................................46 13.4.3 Electrical characteristics .................................. 46 14 AMUX: Analog multiplexer ............................48 14.1 Functional description ......................................48 14.2 Block diagram ..................................................48 14.3 Channel selection ............................................ 48 14.4 Electrical characteristics .................................. 49 15 I/O interface pins ........................................... 50 15.1 WAKE1, WAKE2 ..............................................50 15.1.1 WAKE1 as input for Key OFF – Key ON feature ..............................................................50 15.1.2 Electrical characteristics .................................. 51 15.2 HVIO1, HVIO2 ................................................. 51 15.2.1 HVIO1, HVIO2 used as input .......................... 51 15.2.2 HVIO1, HVIO2 used as output ........................ 51 15.2.3 Electrical characteristics .................................. 52 15.3 LVIO3, LVIO4, LVI5, LVO6 ...............................52 15.3.1 LVIO3, LVIO4, LVI5 used as input ................... 53 15.3.2 LVIO3, LVIO4, LVO6 used as output ............... 53 15.3.3 Electrical characteristics .................................. 54 15.4 I/Os configuration summary .............................54 15.5 INTB .................................................................54 15.5.1 Interrupts and wake-up events management ....................................................54 15.5.2 Electrical characteristics .................................. 55 16 High-side drivers ........................................... 57 16.1 Functional description ......................................57 16.2 LED driving ......................................................57 16.3 Cyclic sense .................................................... 57 16.4 Electrical characteristics .................................. 59 17 Long duration timer .......................................61 17.1 Calibration procedure ...................................... 62 17.2 Timer functions ................................................ 63 17.3 Electrical characteristics .................................. 64 18 Physical layers ...............................................65 18.1 CAN FD transceiver ........................................ 65 18.1.1 CAN operating modes ..................................... 65 18.1.1.1 CAN Off mode .................................................66 18.1.1.2 CAN Wake-capable mode ............................... 66 18.1.1.3 CAN Wake-up ..................................................67 18.1.1.4 CAN Listen-only mode .....................................67 18.1.1.5 CAN Active mode ............................................ 67 18.1.2 Electrical characteristics .................................. 68 18.2 LIN transceiver ................................................ 71 18.2.1 LIN operating modes ....................................... 71 18.2.1.1 LIN Off mode ...................................................72 18.2.1.2 LIN Wake-capable mode ................................. 72 18.2.1.3 LIN Wake-up ....................................................73 18.2.1.4 LIN Listen-only mode .......................................73 18.2.1.5 LIN Active mode ..............................................73 18.2.2 Electrical characteristics .................................. 74 19 Safety .............................................................. 77 19.1 Functional description ......................................77 19.2 Watchdog .........................................................77 19.2.1 Watchdog selection ......................................... 78 19.2.1.1 Timeout watchdog ........................................... 78 19.2.1.2 Window watchdog ............................................78 19.2.2 Watchdog error counter ...................................79 19.2.3 Watchdog refresh counter ............................... 80 19.2.4 Watchdog error impact .................................... 81 19.2.5 MCU fault recovery strategy ............................81 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 228 / 230 |
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