Automotive-Grade MCU Supporting Seamless Upgrades and Cybersecurity

Powerful Computing Capability and Multiple Encryption Protections, Driving Intelligent Upgrades in Automotive Electronics

The IM94xx is a high-performance automotive-grade MCU based on the Cortex-M4F core, specifically designed to meet the rigorous demands of automotive electronic applications. It integrates a DSP instruction set and a Floating-Point Unit (FPU), delivering exceptional computing power. Furthermore, IM94xx supports the ASIL-B functional safety level and features a built-in HSM-Medium level hardware cryptographic engine. It can execute symmetric and asymmetric cryptographic algorithms such as AES-256, RSA, and ECC, while also supporting Chinese commercial cryptographic algorithms SM2/3/4. The HSM module is equipped with an independent security core, as well as separate storage and data spaces, supporting the execution of secure firmware and allowing users to customize algorithms to meet diverse cybersecurity requirements. 

Key Features

• Compliant with AEC-Q100 Grade 1 standard, operating temperature range from -40°C to 125°C. 
  

• Certified for ISO 26262 ASIL-B Functional Safety Standard.

• 32-bit Arm® Cortex®-M4F core with CPU main frequency up to 120 MHz. 

• Peripherals: 3x CAN FD, 4x UART/LIN, 4x SPI, 2x I2C. 

• Analog & Timers: 2x 20-channel 12-bit 1Mbps ADCs, 32-channel 16-bit PWM supporting dead-time insertion and fault detection. 

• Memory Architecture: 1 MB Flash, 128KB Data Flash (100k write/erase cycles), 128KB SRAM; all blocks support hardware ECC. 

• Evita-Medium information security module, supporting secure boot. 

• Available in LQFP100 and LQFP64 packages, with the LQFP64 package pin-compatible with the IM90xxA. 

Highlights

• Functional Safety Certification: Passed ASIL-B certification, suitable for safety-critical automotive applications. 

• High Performance & Low Power: Powered by the Cortex-M4F core at 120MHz, delivering robust performance with high energy efficiency. 

• Seamless Upgrade Support: 1MB Flash supports A/B Swap, allowing safe and efficient FOTA (Firmware Over-the-Air) upgrades. 

• Massive Storage Space: 256KB Data Flash supports simulated EEPROM emulation, ensuring ample capacity for data retention. 

• Information Security Protection: Built-in HSM module supports multiple hardware cryptographic algorithms to meet high-level security demands. 

Applications

Product Ordering Matrix