NXP Semiconductors MIMX9331AVTYMAB

Overview

MIMX9331AVTYMAB from NXP Semiconductors is an automotive-qualified dual-core Arm® Cortex®-A55 applications processor operating at up to 1.7 GHz, integrated with a Cortex®-M33 real-time core (250 MHz), dual Gigabit Ethernet (one with TSN), CAN-FD, MIPI CSI-2/DSI, and LPDDR4X support - designed for driver monitoring systems and cost-optimized automotive gateways.

For engineers reviewing the MIMX9331AVTYMAB datasheet, MIMX9331AVTYMAB pinout, MIMX9331AVTYMAB application, or MIMX9331AVTYMAB equivalent, key selection criteria include AEC-Q100 Grade 2 qualification (-40°C to +125°C), absence of NPU hardware (per part nomenclature and Table 2), single Cortex-A55 core configuration, and FCBGA306 14 × 14 mm, 0.65 mm pitch packaging.

Technical Context

The MIMX9331AVTYMAB implements a heterogeneous compute architecture: one Cortex-A55 core handles Linux-based application workloads, while the Cortex-M33 executes deterministic real-time tasks such as sensor fusion or safety monitoring - both cores share 256 KB ECC-protected L3 cache and boot from separate 256 KB ROMs. Its memory subsystem supports LPDDR4X up to 2 GB with inline ECC and includes 640 KB on-chip RAM with ECC.

Connectivity is built for automotive edge gateways: two FlexCAN modules (CAN-FD capable), dual GbE controllers (one IEEE 1588/TSN-compliant), three uSDHC interfaces (eMMC 5.1, SDXC, SDIO), and eight LPUARTs (up to 5 Mbps). Security is enforced via Arm TrustZone-A/M, EdgeLock® secure enclave, TRDC with 16 domains, and BBSM with tamper detection.

Key Specifications

Pinout & Package

Package: 306-ball Fine-Pitch Chip Scale Ball Grid Array (FCBGA), 14 mm × 14 mm, 0.65 mm pitch, RoHS-compliant. Thermal resistance R_θJA = 21.7°C/W (JESD51-9, 2s2p board).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar automotive applications processor applications.

Compared with MIMX9331AVTYMAB, MIMX9332AVTXMAC delivers higher CPU throughput for multitasking but increases thermal design complexity, while MIMX9351AVTXMAC adds neural inference capability at the cost of higher silicon area and power - neither offers pin-to-pin compatibility, requiring PCB layout revision.

Availability

MIMX9331AVTYMAB is available at Aetrix Electronics and suitable for automotive driver monitoring systems, cost-optimized gateways, and general-purpose compute modules requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MIMX9331AVTYMAB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.

The i.MX 93 family - including MIMX9331AVTYMAB - was engineered specifically for power-efficient, safety-aware automotive edge computing, emphasizing deterministic real-time performance, functional safety readiness, and hardware-enforced security for next-generation vehicle architectures.

FAQ

What is the core configuration of the MIMX9331AVTYMAB?

The MIMX9331AVTYMAB integrates a single Arm® Cortex®-A55 application processor core operating up to 1.7 GHz and a dedicated Arm® Cortex®-M33 real-time core running up to 250 MHz. Unlike higher-tier variants, it does not include a Neural Processing Unit (NPU), as confirmed by its part number suffix 'A' and Table 2 in the IMX93AEC datasheet. This configuration balances performance, power efficiency, and cost for automotive gateway and DMS applications where ML acceleration is not required.

Does the MIMX9331AVTYMAB support Time-Sensitive Networking (TSN)?

Yes, the MIMX9331AVTYMAB includes one Gigabit Ethernet controller with full IEEE 802.1AS, 802.1Qbv, and 802.1Qbu TSN support, alongside standard features like IEEE 1588 precision time protocol and Energy Efficient Ethernet. This TSN-capable Ethernet port enables deterministic, low-latency communication essential for synchronized control messaging in automotive domain controllers and ADAS gateways - a key differentiator from non-TSN-capable SoCs in the i.MX 93 family.

What package type and thermal characteristics apply to the MIMX9331AVTYMAB?

The MIMX9331AVTYMAB uses a 306-ball FCBGA package measuring 14 mm × 14 mm with 0.65 mm pitch. Its thermal resistance is characterized as R_θJA = 21.7°C/W under JESD51-9 2s2p test conditions. The package supports AEC-Q100 Grade 2 operation (–40°C to +125°C junction temperature), and thermal design must account for the mandatory power sequencing order - NVCC_BBSM_1P8 must be powered first and de-energized last to ensure secure domain integrity throughout power transitions.

How does the MIMX9331AVTYMAB handle automotive security requirements?

The MIMX9331AVTYMAB meets automotive security requirements through multiple hardware-enforced layers: Arm TrustZone-A/M isolates secure and non-secure worlds, EdgeLock® secure enclave provides tamper-resistant key storage and cryptographic acceleration, TRDC enforces 16 configurable resource domains, and the Battery Backed Security Module (BBSM) delivers secure RTC and tamper detection. These features collectively support secure boot, encrypted firmware updates, and runtime isolation - satisfying ISO/SAE 21434 and UNECE R155 compliance needs without external security ICs.

What memory interfaces does the MIMX9331AVTYMAB support?

The MIMX9331AVTYMAB supports a 16-bit LPDDR4X/LPDDR4 interface with inline ECC, enabling up to 2 GB of external DRAM. It also integrates 640 KB of on-chip RAM (OCRAM) with ECC protection and dual 256 KB boot ROMs - one for Cortex-A55 and one for Cortex-M33. The FlexSPI interface supports XIP (execute-in-place) from Serial NOR/NAND flash in low-power mode, reducing active memory bandwidth demand during background operations.