NXP Semiconductors MCIMX31CJMN4C

Overview

MCIMX31CJMN4C from NXP (formerly Freescale) is an industrial- and automotive-grade multimedia applications processor built on the ARM1136JF-S core, operating at 400 MHz with integrated L1/L2 caches, MPEG-4 hardware encoder (VGA@30 fps), Vector Floating Point (VFP11) co-processor, and SDMA controller. It supports DDR, NAND/NOR Flash, SDRAM, and SRAM memory interfaces and targets infotainment and human-machine interface systems in harsh environments.

For engineers reviewing the MCIMX31CJMN4C datasheet, MCIMX31CJMN4C pinout, MCIMX31CJMN4C application, or MCIMX31CJMN4C equivalent, key selection considerations include its –40°C to +85°C operating range, 90 nm dual-Vt process, DVFS power management, GPU availability (present in MCIMX31C variant), and MAPBGA-473 19×19 mm 0.8 mm pitch package compatibility.

Technical Context

The MCIMX31CJMN4C implements the ARM v6 architecture with Jazelle® Java acceleration, Thumb® instruction set, and SIMD DSP extensions. Its eight-stage pipeline includes branch prediction with return stack and low-interrupt latency, enabling deterministic real-time response in industrial HMI and automotive navigation systems.

Memory subsystem integration includes 16 KB instruction and 16 KB data L1 caches, a 128 KB unified L2 cache, 32 KB ROM for boot code, and 16 KB embedded SRAM for low-power audio streaming. The EMI supports multi-master memory access with dedicated controllers for SDRAM, NAND Flash, and WEIM interfaces.

Key Specifications

Pinout & Package

MCIMX31CJMN4C uses a MAPBGA-473 package (Case 1931), 19 × 19 mm body, 0.8 mm pitch, RoHS-compliant and lead-free, MSL Level 3. Pin assignments follow the official Freescale MCIMX31C/MCIMX31LC Technical Data Rev. 4.3, Section 5 "Package Information and Pinout" (pages 99–105).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCIMX31CJMN4C, i.MX535CJM8A delivers significantly higher CPU and GPU performance but requires revised power delivery and thermal management; i.MX6ULL G0A provides superior long-term availability and Linux ecosystem maturity while maintaining comparable industrial temperature range and peripheral integration density.

Availability

MCIMX31CJMN4C is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial HMI terminals, and medical imaging displays requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MCIMX31CJMN4C 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 heritage from Freescale's high-reliability microcontroller and applications processor divisions.

The i.MX family, including MCIMX31CJMN4C, was designed specifically for demanding embedded applications in automotive infotainment and industrial human-machine interfaces where extended temperature operation, hardware-accelerated multimedia, and robust security are mandatory.

FAQ

What is the maximum operating frequency of the MCIMX31CJMN4C?

The MCIMX31CJMN4C operates at a maximum ARM1136JF-S core frequency of 400 MHz. This speed is guaranteed across the full industrial temperature range (–40°C to +85°C) under specified core voltage conditions (QVCC/QVCC1/QVCC4 ≥ 1.22 V). Frequency scaling is supported via DVFS, but the upper limit remains fixed at 400 MHz per the MCIMX31C/MCIMX31LC Technical Data Rev. 4.3 specification.

Does the MCIMX31CJMN4C include a graphics processing unit (GPU)?

Yes, the MCIMX31CJMN4C includes a dedicated Graphics Processing Unit (GPU) as part of its multimedia subsystem. This distinguishes it from the MCIMX31LC variant, which omits the GPU. The GPU provides hardware acceleration for 2D and 3D graphics algorithms, supporting OpenGL ES 1.1 and enabling responsive UI rendering in automotive and industrial HMI applications.

What package type and pin count does the MCIMX31CJMN4C use?

The MCIMX31CJMN4C uses a MAPBGA-473 package (Case 1931), measuring 19 × 19 mm with 0.8 mm pitch and RoHS-compliant lead-free construction. It contains 473 solder balls arranged in a grid pattern, with documented ball assignments provided in Section 5 ("Package Information and Pinout") of the official MCIMX31C/MCIMX31LC Technical Data Rev. 4.3 datasheet.

How does the MCIMX31CJMN4C support secure boot and tamper resistance?

The MCIMX31CJMN4C integrates multiple hardware security features: a Random Number Generator (RNGA) compliant with FIPS-140, Run-Time Integrity Checkers (RTIC), Security Controller (SCC) with Secure RAM, and dedicated tamper-detect input (GPIO1_6). Once enabled, tamper detection is irreversible until reset, and the Fusebox allows permanent configuration locking - collectively enabling certified secure boot and anti-cloning protection.

Which memory types are supported by the MCIMX31CJMN4C external memory interface?

The MCIMX31CJMN4C supports DDR SDRAM, NAND Flash, NOR Flash, PSRAM, SDRAM, and SRAM via its External Memory Interface (EMI). The EMI includes dedicated controllers: Enhanced SDRAM Controller (ESDCTL), NAND Flash Controller (NFC), and Wireless External Interface Module (WEIM) for NOR/PSRAM - enabling flexible, high-bandwidth memory architectures without external bus logic.