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    MFS2613AMDA3AD

    Devices in the FS26 automotive safety System Basis Chip (SBC) family are designed to support entry and midrange safety microcontrollers, like those in the S32K3 series. FS26 devices have multiple power supplies and
    the flexibility to work with other microcontrollers targeting automotive electrification. Possible FS26 applications
    include power train, chassis, safety and low-end gateway technology.
    This family of devices consist of several versions that are pin to pin and software compatible. These versions
    support a wide range of applications with Automotive Safety Integrity Levels (ASIL) B or D, offering choices in
    number of output rails, output voltage settings, operating frequencies, power up sequencing, and integrated
    system level features.
    The FS26 features multiple switch mode regulators and low dropout (LDO) voltage regulators to supply the
    microcontroller, sensors, peripheral ICs and communication interfaces. It offers a high precision reference
    voltage supply for the system, and for two independent tracking regulators. The FS26 also offers various
    functionality for system control and diagnostics, including an analog multiplexer, General Purpose Input/Outputs
    (GPIOs), and selectable wakeup events from I/O, long duration timer or Serial-Peripheral Interface (SPI)
    communication.
    The FS26 is developed in compliance with the ISO26262 standard, and includes enhanced safety features
    with multiple fail-safe outputs. It uses the latest on-demand latent fault monitoring, and can be part of a safetyoriented system partitioning scheme covering both ASIL B and ASIL D safety integrity levels.

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      SPECIFICATION

      • 40 V DC maximum input voltage
      • Support operating voltage range down to battery 3.2 V with VBST
      • Support operating voltage range down to battery 6 V without VBST
      • Low Power OFF mode with 30 µA quiescent current
      • Low Power Standby mode with 29 µA quiescent current with VPRE active. LDO1 or LDO2 activation
      selectable via OTP configuration. GPIO1 or GPIO2 activation selectable via SPI communication.
      Power supplies
      • VPRE: Synchronous buck converter with integrated FETs. Configurable output voltage and switching
      frequency, output DC current capability up to 1.5 A and PFM mode for Low Power Standby mode operation.
      • VCORE: Synchronous buck converter with integrated FETs. VCORE is dedicated for microcontroller core
      supply. Output DC current up to 0.8 A or 1.65 A (depending on part number), output voltage range setting
      from 0.8 V to 3.35 V.
      • VBST: Asynchronous boost controller with external low-side switch, diode, and current sense resistor. VBST
      is configurable as front-end supply to withstand low voltage cranking profiles or in back-end supply with
      configurable output voltage and scalable output DC current capability.
      • LDO1: LDO regulator for microcontroller I/O support with selectable output voltage between 3.3 V and 5.0 V
      and up to 400 mA current capability.
      • LDO2: LDO regulator for system peripheral support with selectable output voltage between 3.3 V and 5.0 V
      and up to 400 mA current capability.
      • VREF: High-precision reference voltage with 0.75 % accuracy for External ADC reference and internal
      tracking reference.
      • TRK1 and TRK2: Voltage tracking regulators with selectable output voltage between VREF, LDO2, or Internal
      LDO reference. Support high-voltage protection for ECU off board operation. Each Tracker has a current
      capability up to 150 mA.
      System support
      • Two wake-up inputs with high-voltage support for system robustness
      • Two programmable GPIO with wake-up capability or HS/LS driver
      • Programmable long duration timer (LDT) for system shutdown and wake-up control
      • Monitoring of system voltages (Including Battery voltage monitoring) through the analog multiplexer
      • Selectable wake-up sources from: WAKE/GPIO pins, LDT, or SPI activity
      • Device control via 32-bit SPI interface with cyclic redundancy checks (CRC)
      Compliance
      • Electromagnetic compatibility (EMC) optimization techniques for switching regulators, including spread
      spectrum, slew rate control, and manual frequency tuning.
      • Electromagnetic interference (EMI) robustness supporting various automotive EMI test standards.
      Functional safety
      • Scalable portfolio from Automotive Safety Integrity Levels (ASIL) B to D
      • Independent monitoring circuitry, dedicated interface for microcontroller monitoring, simple or challenger
      watchdog function
      • Analog built-in self-test (ABIST) and Logical Built-In Self-Test (LBIST) at start up
      • Analog built-in self-test (ABIST) on demand
      • Safety outputs with latent fault detection mechanism (RSTB, FS0B, FS1B)

      Configuration and enablement
      • LQFP48 pins with exposed pad for optimized thermal management
      • Permanent device customization via one time programmable (OTP) fuse memory
      • OTP Emulation mode for hardware development and evaluation
      • Debug mode for software development, MCU programming, and debugging