Motor-control MCU for 12 V automotive body applications
The TLE9879QTW40XUMA1: The 40 MHz core executes the field-oriented control loop with headroom for commutation and fault handling.
Memory and peripheral allocation for a motor BOM
128 KB of on-chip flash and 6 KB of RAM are partitioned for the motor-control firmware stack — the flash holds the application code plus the commutation lookup table, while the 4 KB EEPROM stores calibration coefficients and fault logs without an external serial memory. The 5-channel 10-bit sigma-delta ADC samples phase currents and rotor position at the PWM rate. The peripheral set includes a PWM unit with dead-time generation, a DMA controller for ADC-to-memory transfers without CPU intervention, and a watchdog timer for IEC 60730 safety compliance. Connectivity covers LIN 2.x for body-network bus communication and SPI for an external sensor hub.
Supply and package — direct battery connection
The 5.5 V to 27 V supply range lets the MCU connect directly to a 12 V automotive battery without a pre-regulator — the internal voltage regulator drops the rail to the core supply. The 10 GPIOs are enough for three hall-sensor inputs, a fault output, and a LIN transceiver enable — no port expansion needed for a basic brushless-DC pump or fan.