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Overview:

The S32K394EHT1MJBST MCU for electrification applications is designed for electric vehicle (EV) traction inverter control. The MCU has the characteristics of good performance, high integration, good networking, strong security and functional safety. The device supports six-phase or two three-phase motors, has a control loop frequency of over 200 kHz, and comes with its own AI/ML algorithm. The device enables remote intelligent execution over time Sensitive Network (TSN) Ethernet. The device reduces the system cost through the ASIL D software parser and analog integration.

Block diagram of S32K394EHT1MJBST:

Features:

Four Arm® Cortex®-M7 processors operating at 320 MHz

1 Pair of lock step core processors

Two split-lock (split-lock) configurable processors

2 motor control coprocessors operating at 320 MHz (S32K39 only)

Programmable CoolFLLOCK™ DSP operating at 160 MHz

4 MB or 6 MB embedded flash (with ECC)

800 KB SRAM

2 eFlexPWM (12 channels) with NanoEdge (8 channels)

1 eMIOS (24 channels)

2 Logic control Units (LCU)

7 SAR-ADCs (69 channels)

Four sigma-δ analog-to-digital converters

2 sine Wave Generators (SWG)

2x analog comparator

1 Ethernet interface for time sensitive networking (TSN) (10/100Mbps), compatible with TJA1101 100BASE-T1 PHY transceiver

1 Zipwire high-speed interface for memory sharing between MCUS

6 CAN/CAN FD interfaces, compatible with TJA144x CAN FD transceivers

4 LIN/UART compatible with TJA1022 dual LIN transceiver

8 channel FlexIO interface to simulate UART, I2C, SPI, I2S, SENT and PWM

Two I2C ports

6 SPIs

Meets the ISO 26262 standard for in-vehicle electronic systems, up to ASIL D, the highest level of automotive safety integrity

Security concepts for inverter application scenarios

Hardware fault collection unit

Security documentation and security assurance community support

Designed to support the ISO/SAE 21434 standard

The NXP Hardware Security Engine (HSE_B) accelerates symmetric and asymmetric encryption and hashing algorithms

Up to AES-256, RSA-4096, ECC-521, SHA2/3-512

Secure boot and key storage

Side channel protection

Expected to meet ISO 21434 standards

HSE production intent firmware

Real-time driver (RTD) for AUTOSAR systems and non-AUTOSAR systems, ASIL-D compliant

Production of specialized ASIL-D software parsers and checkers

SAR ADC firmware for DSP

Security firmware

ASIL D system with FS26 system base chip

Temperature range: -40°C to +125°C (Tj =+150°C)

MAPBGA-289 (14 mm x 14 mm x 1.37 mm, 0.8mm foot spacing)

LQFP-EP-176 (24 mm x 24 mm x 1.5 mm, foot spacing is 0.5 mm)

Applications:

Battery Management System (BMS)

Electric vehicle (EV) traction inverter

Hybrid electric Vehicle (HEV)

Electric steering

Vehicle control unit