The NXP® MC33908AER2 system basis chip (SBC) provides power to MCUs and optimizes energy consumption through DC/DC switching regulators, linear regulators and ultra-low-power saving modes. Featuring:
- Advanced functional safety measures
- A serial peripheral interface (SPI) to allow control and diagnostics with the MCU
- Integration of CAN and LIN physical interfaces compliant with the ISO 11898-2,-5, LIN 2.2, 2.1/J2602-2 standards along with the latest automotive OEM standards for EMC and ESD
- A range of integrated safety features such as monitoring of critical analog parameters, a failsafe state machine and an advanced watchdog reduce software complexity with dual-core lock-step MCUs
Feature
- Flexible DC/DC pre-regulator allowing Buck or Buck-Boost
- Optional Boost to improve system availability at cranking
- Multiple output power supplies from 0.5 up to 2 A
- DC/DC voltage regulator to supply MCU core up to 1.5 A
- 5 V/ 3.3 V linear voltage regulator dedicated to MCU I/Os
- Linear voltage regulator dedicated to auxiliary loads
- Multiple wake-up sources combined with ultra-low-power mode: CAN, LIN, I/Os, current detection, etc.
- Battery sensing before and after reverse battery protection
- Analog multiplexer to sense critical signals
- Enhanced safety block associated with fail-safe outputs
- Designed for ASIL D applications (FMEDA, Safety manual)
- Secured SPI interface
- Configurable I/Os for wake-up and safety purposes
- ISO11898-2,-5 CAN high-speed physical interface
- LIN 2.2/2.1, J2602-2 physical interface
- High EMC immunity and ESD robustness
