High-End Domain Controller (DCU): IM97xxA

The IM97xxA is a Domain Controller Unit (DCU) product designed for high-end automotive applications. It integrates three 32-bit Cortex-M7 cores, two of which feature lock-step functionality, delivering excellent computing performance and strong safety assurance. Suitable for multiple key control domains of next-generation intelligent vehicles, the IM97xxA — with its rich communication interfaces, functional-safety support, and advanced information-security module — is an ideal choice for leading automotive control systems, enabling a smarter driving experience.

Main Features

• Up to 80-channel PWM for motor control and power control
• Up to 96-channel SAR ADC
• HSM-Full security module (AES/RSA/ECC; Chinese-national SM2/3/4)
• QSPI and eMMC storage-expansion interfaces
• BGA-293 and BGA-185 packages
• AEC-Q100 Grade 1, operating temperature -40 ℃ ~ 125 ℃
• 300 MHz, 3 Cortex-M7 application cores + 2 lock-step cores
• Rich interfaces: 12× CAN FD, 1× 1000 Mbps Ethernet, 16× UART/LIN, 8× SPI, 2× I2C, 12× SENT

Highlights

• Expandable to 4 application cores + 1 lock-step core for higher compute
• Information security: EVITA-Full, Chinese-national SM2/3/4
• Dedicated motor-control SPWM and power-control EPWM modules
• ISO 26262 ASIL-D compliant
• Gigabit automotive Ethernet support
• ADC sampling rate up to 2 Msps
• Up to 1.5 MB SRAM for software execution

Applications

Specifications

• Compliant with AEC-Q100 Grade 1

• Power: 3.0 V ~ 5.5 V
• Ambient temperature: -40 ℃ ~ +125 ℃

• BGA-293, BGA-185

• 3× 32-bit Arm® Cortex®-M7 cores plus 2 lock-step cores
• Configurable Nested Vectored Interrupt Controller (NVIC)
• Integrated Digital Signal Processor (DSP)
• Memory Protection Unit (MPU)
• CPU frequency 300 MHz
• SysTick

• Integrated PMC supports STANDBY and RUN modes

• External high-speed clock (HSE): 4 MHz ~ 40 MHz
• Internal high-speed clock (HSI): 8 MHz
• Internal low-speed clock (LSI): 32 kHz
• 2 Phase-Locked Loops (PLL)

• PFlash up to 8 MB with ECC
• 256 KB Data Flash emulating EEPROM for data storage
• Total 1584 KB SRAM (including TCM) with ECC
• External QSPI Flash interface supported
• External eMMC with ECC supported

• Up to 241 GPIO pins, all interrupt-capable
• Non-Maskable Interrupt (NMI) support

• Hardware crypto module (HSM), HSM-FULL grade
• AES256, RSA4096, ECC521, SHA2-512, TRNG/PRNG
• All Flash and SRAM support ECC
• Data-transfer channels support EDC
• Cyclic Redundancy Check module (CRC)
• Unique chip identifier (UUID)
• Clock monitor
• Low-voltage detection and reset (LVD, LVR)
• Built-in self-test unit (MBIST, LBIST)
• 4 independent-clock watchdogs (WDG)

• Up to 12 CAN FD modules
• Up to 16 UART modules with LIN protocol support
• Up to 2 I2C modules
• Up to 8 SPI modules
• 1 Gigabit Ethernet module
• 12 SENT modules

• 8× 12-channel 12-bit 2 Msps SAR ADC
• 4× 4-channel CMP (analog comparator)
• 4× 10-bit DAC for comparator and external output
• Built-in temperature sensor

• 4× 8-channel SPWM modules
• 4× 4-channel IPWM modules
• 4× 8-channel EPWM modules
• 16× 32-bit timers
• 1× RTC module

Product Models