FS2302M datasheet(3/230 Pages) NXP

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NXP Semiconductors

FS23

Safety system basis chip (SBC) with power management, CAN FD and LIN transceivers

2 Features and benefits

Operating modes

• Normal mode with all power management and functional safety features available

• Stop mode: Low-power OFF mode with multiple wake-up sources (LPOFF)

• Standby mode: Low-power ON mode with HVBUCK or HVLDO1 active and multiple wake-up sources (LPON)

Power management

• HVBUCK: Synchronous buck converter with integrated FETs. Configurable Normal mode output voltage and LPON mode output voltage

(3.3 V or 5.5 V). Output DC current capability of 600 mA in Normal mode, and 100 mA current capability in Low-power ON mode

• HVLDO1: High-voltage LDO instead of the HVBUCK for MCU supply with selectable output voltage (3.3 V or 5.5 V) and up to 100 mA

DC current capability with internal PMOS and 250 mA with external PNP

• HVLDO2: High-voltage LDO regulator for system loads, with optional external protection for off-board sensors, selectable output voltage

(3.3 V or 5.0 V) and up to 100 mA DC current capability

• HVLDO3: High-voltage LDO regulator for CAN FD block supply or other with selectable output voltage (3.3 V or 5.0 V) and up to 150

mA current capability

System features

• One CAN FD supporting up to 5 Mbps communication following ISO 11898-2:2016 and SAE J2284 standards

• One LIN following LIN 2.2, ISO 17987-4 and SAE-J2602-2 standards

• Two wake-up inputs (40 V capable)

• Two high-voltage I/Os with wake-up capability (40 V capable)

• Up to four low-voltage I/Os with wake-up capability

• Four configurable high-side drivers with 150 mA drive capability, to supply LEDs or enable external devices (INH), and cyclic-sense

capability

• Multiple wake-up sources: WAKE pins, HVIO pins, LVIO pins, CAN FD, LIN or dedicated SPI / I2C command

• Device control via 32 bits SPI interface or via I2C interface, with CRC

• Integrated long duration timer (LDT) for system shutdown and wake-up control, programmable up to 194 days

• 16-channel analog multiplexer (AMUX) for system monitoring (temperature, battery voltage, internal voltages)

Functional safety

• Developed following ISO 26262:2018 standard to fit for ASIL B applications

• Internal monitoring circuitry with its own reference

• Additional input for external voltage monitoring

• Window or timeout watchdog function to monitor the MCU failures by software

• FCCU inputs to monitor MCU failures by hardware

• Analog built-in self-test (ABIST) on demand

• Safety outputs (RSTB, FS0B, LIMP0 and LIMP1/2 with 1.25 Hz or 100 Hz PWM capability)

EMC compliance

• The FS23 EMC tests are performed according to ZVEI Generic IC EMC Test Specification version 2.1 (2017) and FMC1278

Electromagnetic Compatibility Specification for Electrical/Electronic Components and subsystems version 3.0 (2018).

• CAN EMC performances certified against IEC62228-3:2019 and SAE J2962-2:2019

• LIN EMC performances certified against IEC62228-2:2016 and SAE J2962-1:2019

Configuration and enablement

• QFN48EP: QFN 48 pins with exposed pad for optimized thermal management, wettable flanks, 7 x 7 x 0.85 mm, 0.5 mm pitch, 48 pins

• One-time programmable (OTP) memory for scalability, expandability and device customization

• OTP emulation mode for system development and evaluation

FS23

All information provided in this document is subject to legal disclaimers.

Product data sheet

Rev. 7.0 — 16 October 2024

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