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MFS2401AVBA0ES Datasheet(PDF) 48 Page - NXP Semiconductors |
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MFS2401AVBA0ES Datasheet(HTML) 48 Page - NXP Semiconductors |
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48 / 151 page  NXP Semiconductors FS2400 Fail-safe system basis chip with SMPS and LDO, CAN FD transceiver 16.3.1 Interrupts and wake-up events management Two types of interruptions must be dissociated: • "Classic" interrupts used to diagnose the device state and to report events • Wake-up interrupts used to manage the wake-up from the Low-power modes See Table 21 for a list of all interrupts. The classic interrupts are maskable. If these interrupts are not masked, they will generate a pulse on INTB pin. Out of Normal mode, most of these interrupt flags will not be generated because the monitoring functions associated will be disabled. In addition, the WKx_I, HVIO1_I flags are not generated out of Normal mode. WAKEx/HIDx pins, HVIO1 pin, CAN and LDT can be configured as wake-up sources using xxxx_WUEN[1:0] SPI configuration bits. Each wake-up source can be configured to generate an interrupt, a transition to Normal mode or both. In this last case, a wake-up event on these functions will generate a non-maskable wake-up flag (xxxx_WU_I) and an interrupt pulse on INTB. In LPON mode, if a wake-up event occurs and the wake-up source is enabled, an interrupt is generated and/ or the device transitions to Normal mode. If only the interrupt generation is enabled, it is the MCU decision to request a transition to Normal mode or not, via GO2NORMAL SPI bit. In LPOFF mode, if a wake-up event occurs and the wake-up source is enabled, the device transitions to Normal mode. 16.3.2 Electrical characteristics TA = −40 °C to 115 °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 Interrupt pin INTBPULL-up Comment by: nxf75746 / Status: Cap PULL-UP next time. Raphael approved that (or PULLUP to match next col) -Judy Internal pullup resistor to VDDIO 5 10 20 kΩ INTBVOL Low-output level (IOUT = 2 mA) - - 0.4 V INTBVOH High-output level VDDIO – 0.5 - - V INTBILIM INTB current limitation 4 - 22 mA TINTB_PULSE Pulse duration (without output capacitor) • INTB_DUR = 0 (short) • INTB_DUR = 1 (long) 17.5 70 25 100 32.5 130 μs TINTB_TO INTB timeout for wake-up event 8 10 12 ms TINTB_DLY Delay between INTB_REQ command reception and INTB pulse start 36 40 44 μs Table 20. INTB electrical characteristics Interrupt Description Mask/Enable Event interrupt VSUPUV_4P7_I VSUP 4.7 V threshold undervoltage VSUPUV_4P7_M Table 21. List of interrupts from main logic FS2400 All information provided in this document is subject to legal disclaimers. © 2024 NXP B.V. All rights reserved. Product data sheet Rev. 4 — 23 October 2024 Document feedback 48 / 151 |
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