NXP Semiconductors MCIMX31CJMN4DR2

Overview

MCIMX31CJMN4DR2 from NXP Semiconductors (formerly Freescale) is an industrial- and automotive-grade multimedia applications processor built around the ARM1136JF-S core, operating at 400 MHz with integrated L1/L2 caches (16 KB I-cache, 16 KB D-cache, 128 KB unified), 32 KB ROM, and 16 KB SRAM. It integrates MPEG-4 hardware encoder (VGA @ 30 fps), Image Processing Unit (IPU), Vector Floating Point (VFP11) co-processor, and SDMA controller. It targets automotive infotainment and industrial human-interface systems requiring extended temperature operation (–40°C to +85°C).

For engineers reviewing the MCIMX31CJMN4DR2 datasheet, MCIMX31CJMN4DR2 pinout, MCIMX31CJMN4DR2 application, or MCIMX31CJMN4DR2 equivalent, key selection criteria include its 400 MHz ARM1136JF-S core, dual-Vt 90 nm process, DVFS-capable power management, support for DDR/SDRAM/NAND/NOR/SDIO/USB2.0 OTG, and qualification for automotive (-40°C to +85°C) environments.

Technical Context

The MCIMX31CJMN4DR2 implements the ARM v6 architecture with Jazelle® Java acceleration, Thumb® instruction set, and SIMD DSP extensions. Its memory subsystem includes 16 KB instruction and 16 KB data L1 caches with Hit-Under-Miss capability, a 128 KB unified L2 cache, and 32 KB boot ROM with ROMPATCH module for field-upgradable firmware patches.

Power management relies on dynamic voltage and frequency scaling (DVFS), independent clock/power domain gating, and multiple low-power states including Deep Sleep (0.2 mA typical core current at 0.95 V). The chip supports secure boot via RTIC, RNGA, SCC, and tamper detection on GPIO1_6 - all validated for AEC-Q100-compliant automotive use.

Key Specifications

Pinout & Package

MCIMX31CJMN4DR2 is housed in a RoHS-compliant, lead-free MAPBGA package (Case 1931), 19 mm × 19 mm, 0.8 mm pitch, 473-ball layout. Ball assignment follows JEDEC MO-251 standard with defined power/ground distribution, differential clock inputs (CKIL/CKIH), and dedicated supply rails per functional domain (QVCC, NVCCx, FVCC, etc.).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCIMX31CJMN4DR2, i.MX357 CVK8C delivers higher CPU/GPU performance but omits hardware MPEG-4 encode and increases power/thermal demands, while i.MX27 ADS reduces integration and security to meet cost targets - neither offers pin- or software-compatible replacement.

Availability

MCIMX31CJMN4DR2 is available at Aetrix Electronics and suitable for automotive infotainment, industrial HMI, and ruggedized telematics applications requiring stable component supply, long-term lifecycle support, and AEC-Q100-aligned qualification.

Supply support for MCIMX31CJMN4DR2 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 leader focused on secure connectivity solutions for automotive, industrial, and IoT markets, with deep heritage in i.MX application processors.

The i.MX31 product line was engineered specifically for high-reliability, low-power multimedia processing in extended-temperature automotive and industrial settings - emphasizing security, real-time video acceleration, and robust power management.

FAQ

What is the maximum operating frequency of the MCIMX31CJMN4DR2?

The MCIMX31CJMN4DR2 features an ARM1136JF-S core rated for a maximum CPU frequency of 400 MHz. This speed is achievable under specified core supply conditions (QVCC/QVCC1/QVCC4 ≥ 1.22 V) and junction temperature ≤ 105°C. The device uses dynamic voltage and frequency scaling (DVFS) to maintain stability across voltage and thermal variations, with CKIH reference clock typically set to 26 MHz for optimal DPLL lock and performance consistency in the MCIMX31CJMN4DR2.

Does the MCIMX31CJMN4DR2 include a graphics processing unit (GPU)?

Yes, the MCIMX31CJMN4DR2 includes a dedicated Graphics Processing Unit (GPU) as part of its multimedia subsystem. Unlike the MCIMX31LC variant (which omits the GPU), the MCIMX31CJMN4DR2 integrates hardware acceleration for both 2D and 3D graphics algorithms. This GPU operates alongside the ARM1136JF-S core and Vector Floating Point (VFP11) co-processor to offload rendering tasks, enabling efficient UI composition and basic 3D visualization in automotive and industrial HMI applications supported by the MCIMX31CJMN4DR2.

What memory types does the MCIMX31CJMN4DR2 support directly?

The MCIMX31CJMN4DR2 supports DDR SDRAM, SDRAM, NOR Flash, NAND Flash, and SRAM through its integrated External Memory Interface (EMI). The EMI includes a Multi-Master Memory Interface (M3IF), Enhanced SDRAM Controller (ESDCTL), NAND Flash Controller (NFC), and Wireless External Interface Module (WEIM). These controllers enable direct connection without external glue logic - for example, NAND Flash can be attached via 8-bit or 16-bit bus with hardware ECC, and DDR SDRAM is supported at speeds compliant with JEDEC standards. All memory interfaces are accessible and validated for use in the MCIMX31CJMN4DR2.

Is the MCIMX31CJMN4DR2 qualified for automotive applications?

Yes, the MCIMX31CJMN4DR2 is explicitly designed and qualified for automotive applications. It meets the extended operating temperature range of –40°C to +85°C and incorporates features required for automotive use, including tamper detection (GPIO1_6), secure boot via RTIC and SCC, RNGA for cryptographic key generation, and AEC-Q100 alignment in its qualification testing. The datasheet confirms its suitability for automotive infotainment and navigation systems, and its packaging (MAPBGA, Case 1931) is RoHS-compliant and MSL Level 3 - all consistent with automotive supply chain requirements for the MCIMX31CJMN4DR2.

How does the Image Processing Unit (IPU) in the MCIMX31CJMN4DR2 reduce system memory load?

The Image Processing Unit (IPU) in the MCIMX31CJMN4DR2 performs autonomous video and graphics operations - such as rotation, blending, color-space conversion, and display path management - without involving the ARM CPU or main system memory. For example, in a power-efficient viewfinder application, the IPU processes raw camera sensor data and outputs directly to the LCD controller, bypassing DRAM entirely. This capability is confirmed in the technical data sheet and directly reduces memory bandwidth pressure, lowers CPU utilization, and cuts overall system power consumption - a verified architectural feature of the MCIMX31CJMN4DR2.