NXP Semiconductors MCIMX31CJMN4D

Overview

MCIMX31CJMN4D from NXP Semiconductors (formerly Freescale) is an ARM1136JF-S™-based multimedia applications processor for automotive infotainment and industrial human-interface systems. It operates at 400 MHz, integrates 128 KB L2 cache, 16 KB instruction and data L1 caches, 32 KB ROM, and 16 KB SRAM, and supports DDR, NAND Flash, USB 2.0 OTG, and MPEG-4 hardware encoding up to VGA@30 fps.

For engineers reviewing the MCIMX31CJMN4D datasheet, MCIMX31CJMN4D pinout, MCIMX31CJMN4D application, or MCIMX31CJMN4D equivalent, key selection criteria include its –40°C to +85°C operating range, MAPBGA-473 19×19 mm 0.8 mm pitch package, dual-Vt 90 nm process, DVFS power management, and integrated IPU, VFP11, and SDMA controller for real-time video processing and low-power audio streaming.

Technical Context

The MCIMX31CJMN4D 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 response in automotive HMI and industrial control.

Memory subsystem features a 64-bit AMBA L2 interface, non-blocking L1 data cache with Hit-Under-Miss, and unified 128 KB L2 cache. The embedded 16 KB SRAM serves dedicated audio streaming to avoid external memory access, while the ROM patch module enables field-upgradable boot code without hardware modification.

Key Specifications

Pinout & Package

MCIMX31CJMN4D uses a MAPBGA-473 package: 19 mm × 19 mm body, 0.8 mm ball pitch, RoHS-compliant lead-free construction (Case 1931, MSL Level 3). Pinout follows Freescale Document Number MCIMX31C Rev. 4.3, Section 5 "Package Information and Pinout" (pages 99–105), with 473 BGA balls arranged in 25 × 25 array excluding corner blanks.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCIMX31CJMN4D, i.MX515CJM offers higher compute density and GPU capability but removes dedicated MPEG-4 hardware and increases thermal envelope, while i.MX6ULL provides superior long-term supply and security certification paths at the cost of real-time video acceleration and legacy peripheral compatibility.

Availability

MCIMX31CJMN4D is available at Aetrix Electronics and suitable for automotive infotainment head units, industrial HMI terminals, portable medical imaging displays, and secure industrial gateways requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MCIMX31CJMN4D 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 applications, with deep expertise in ARM-based application processors and edge computing.

The i.MX family-including MCIMX31CJMN4D-is designed specifically for high-reliability, low-power multimedia processing in harsh environments, combining ARM performance with integrated video, security, and industrial interface IP.

FAQ

What is the maximum operating frequency of the MCIMX31CJMN4D?

The MCIMX31CJMN4D operates at a maximum CPU frequency of 400 MHz using the ARM1136JF-S™ core. This frequency is sustained under full load with proper thermal management and core supply (QVCC/QVCC1/QVCC4) regulated within 1.22–1.47 V. The CKIH reference clock must be configured per the DPTC table-typically 26 MHz-to ensure stable DVFS operation across the full frequency range.

Does the MCIMX31CJMN4D include a graphics processing unit (GPU)?

Yes, the MCIMX31CJMN4D includes an integrated Graphics Processing Unit (GPU) for hardware-accelerated 2D and 3D graphics algorithms. Unlike the MCIMX31LC variant, which omits the GPU, the MCIMX31CJMN4D retains full GPU functionality as part of its multimedia applications processor feature set, enabling efficient rendering for automotive dashboards and industrial HMIs.

What package type and pin count does the MCIMX31CJMN4D use?

The MCIMX31CJMN4D uses a MAPBGA-473 package: 19 mm × 19 mm body size, 0.8 mm ball pitch, RoHS-compliant lead-free construction (Case 1931, Moisture Sensitivity Level 3). It has 473 solder balls arranged in a 25 × 25 grid with corner positions omitted, as documented in Freescale's MCIMX31C Rev. 4.3 datasheet Section 5.

How does the MCIMX31CJMN4D support secure boot and tamper protection?

The MCIMX31CJMN4D supports secure boot through its Security Controller Module (SCC), Secure RAM, and Run-Time Integrity Checker (RTIC). Tamper protection is implemented via GPIO1_6, which triggers a hardware security violation when asserted-once enabled via GPR[16], it remains active until reset. These features collectively enforce firmware authenticity and physical intrusion detection in automotive and industrial deployments.

Can the MCIMX31CJMN4D operate without external DDR memory?

Yes, the MCIMX31CJMN4D can operate without external DDR memory by leveraging its on-chip 16 KB SRAM for audio streaming, security operations, or small real-time tasks, and its 32 KB ROM for boot code execution. However, full Linux or QNX operation, video decode, and application workloads require external DDR or SDRAM connected via the EMI interface-SRAM alone is insufficient for general-purpose OS execution.