MIMX9121DVVXCAA

Overview

The MIMX9121DVVXCAA is an i.MX 91 family application processor featuring a single Arm Cortex-A55 core operating at 800 MHz. It includes 256 KB L2 cache, 384 KB internal SRAM, and supports LPDDR4 memory with inline ECC. Connectivity comprises two USB 2.0 ports, two Gigabit Ethernet interfaces (one with TSN), two CAN FD ports, three SD/SDIO/eMMC 5.1 ports, eight UARTs, eight SPIs, and eight I2Cs. The device utilizes a 11 x 11 mm, 0.5 mm pitch FCCSP package and meets commercial temperature qualifications.

Feature Summary

• Integrates an Arm Cortex-A55 processor core supporting Linux and RTOS environments with hardware security via the EdgeLock secure enclave.
• Provides dual Gigabit Ethernet MACs with Time-Sensitive Networking capabilities for deterministic industrial control loops.
• Supports machine learning workloads through Arm NEON floating-point units and dot product instructions within the Cortex-A55 architecture.
• Features comprehensive peripheral connectivity including multiple serial audio interfaces, PDM microphone inputs, and parallel camera/display interfaces.

Applications

• Industrial HVAC systems and energy metering devices
• Building safety and security infrastructure
• Smart home controllers and Matter-enabled IoT devices
• Connected home appliances and essential HMI panels

Procurement Notes

Verify the specific ordering suffix to confirm the package type and qualification grade. Ensure the selected variant matches the required thermal range for the target deployment environment. Confirm compatibility with the PF9453 power management IC for system integration. Validate software support availability for the chosen operating system before finalizing procurement decisions.

Selection Notes

Select this model when an 800 MHz processing speed suffices for the application workload. Choose this part over higher-frequency variants if cost optimization or lower power consumption is prioritized. Ensure the design accommodates the 11 x 11 mm FCCSP footprint. Verify that the dual Gigabit Ethernet requirement aligns with the network topology needs of the end product.

Part Context

This component belongs to the NXP i.MX 91 applications processor family, serving as an entry point into the i.MX 9 series. It shares hardware and software commonality with the i.MX 93 family, allowing for scalable product line development. The family targets Linux-based edge computing applications requiring robust security and energy efficiency for industrial and IoT markets.

Replacement Considerations

MIMX9121CVVXCAA: Industrial qualified version with identical specifications.

FAQ

Does the MIMX9121DVVXCAA include an integrated neural processing unit?

No, this specific processor relies on the Arm Cortex-A55 core with NEON extensions for machine learning acceleration, unlike the i.MX 93 which integrates an Arm Ethos microNPU.

What is the maximum supported external memory bandwidth?

The SoC supports LPDDR4 memory at up to 2.4 GT/s bandwidth with inline error correction code (ECC) functionality.