NXP Semiconductors MCIMX31LCVMN4C

Overview

MCIMX31LCVMN4C from NXP Semiconductors (formerly Freescale) is a low-power, high-performance multimedia applications processor based on the ARM1136JF-S core operating at 400 MHz. It integrates an Autonomous Image Processing Unit (IPU), MPEG-4 hardware encoder (VGA @ 30 fps), Vector Floating Point (VFP11) co-processor, and SDMA controller - all optimized for automotive infotainment and industrial human-interface systems requiring extended temperature operation (–40°C to +85°C).

For engineers reviewing the MCIMX31LCVMN4C datasheet, MCIMX31LCVMN4C pinout, MCIMX31LCVMN4C application, or MCIMX31LCVMN4C equivalent, key selection criteria include its lack of GPU, dual-Vt 90 nm process, DDR/NAND/SDRAM memory interface support, USB 2.0 OTG + dual host capability, and industrial-grade thermal performance in the 19 × 19 mm MAPBGA package.

Technical Context

The MCIMX31LCVMN4C implements the ARM v6 architecture with Jazelle® Java acceleration, SIMD DSP instructions, and an eight-stage pipeline with branch prediction. Its memory subsystem includes 16 KB instruction and 16 KB data L1 caches, a 128 KB unified L2 cache, 32 KB ROM, and 16 KB SRAM - enabling low-latency audio streaming and secure boot via ROM patching.

Power management relies on dynamic voltage and frequency scaling (DVFS), independent clock/power domain gating, and state retention mode (0.95 V core). The device supports multiple external memory types (DDR, NAND Flash, NOR Flash, SDRAM, SRAM) and interfaces including USB 2.0 OTG, ATA, MMC/SDIO, CompactFlash, and three I²C ports - all managed through the External Memory Interface (EMI) and AIPS interconnect.

Key Specifications

Pinout & Package

MCIMX31LCVMN4C is housed in a RoHS-compliant, lead-free MAPBGA package (Case 1931), 19 × 19 mm body size, 0.8 mm pitch, 473-ball configuration (M = 473-pin variant per Freescale documentation). MSL level 3.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCIMX31LCVMN4C, i.MX353CJM8C offers higher CPU performance and GPU acceleration but removes autonomous image processing capabilities, while i.MX27LHCV reduces silicon complexity and cost at the expense of multimedia encoding and floating-point capability - making MCIMX31LCVMN4C the optimal balance for industrial vision-enabled systems requiring both encode and secure runtime integrity.

Availability

MCIMX31LCVMN4C is available at Aetrix Electronics and suitable for automotive infotainment head units, industrial HMI terminals, portable medical imaging displays, and secure industrial data loggers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MCIMX31LCVMN4C 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 microcontrollers and applications processors.

The i.MX31 product line was engineered specifically for high-reliability, low-power multimedia processing in automotive and industrial environments - emphasizing thermal robustness, hardware-accelerated vision, and integrated security from boot to runtime.

FAQ

What is the GPU status of MCIMX31LCVMN4C compared to MCIMX31CVMN4C?

The MCIMX31LCVMN4C explicitly excludes the Graphics Processing Unit (GPU) present in the MCIMX31CVMN4C. This distinction is documented in the Freescale MCIMX31C/MCIMX31LC Technical Data Rev. 4.3, which states "The MCIMX31LC does not include a graphics processing unit (GPU)." As a result, MCIMX31LCVMN4C relies on the ARM11 core and VFP11 co-processor for 2D/3D graphics tasks, making it suitable for applications where GPU offload is not required but IPU-based camera processing remains critical.

Does MCIMX31LCVMN4C support USB 2.0 High-Speed device mode?

Yes, MCIMX31LCVMN4C supports USB 2.0 High-Speed (480 Mbps) in device mode via its USB-OTG controller. According to Section 4.3.23 of the technical data sheet, the OTG controller provides HS/FS/LS capabilities in host mode and HS/FS in device mode. In device (bypass) mode, the OTG port functions as a gateway between Host 1 Port and the OTG transceiver - enabling direct HS device connectivity without external hubs or transceivers when configured appropriately.

What is the function of GPIO1_6 on MCIMX31LCVMN4C, and can it be used as a general-purpose I/O?

GPIO1_6 on MCIMX31LCVMN4C serves as a dedicated tamper detect input. When enabled via GPR[16], it triggers irreversible security violation logic upon assertion - a feature used in secure boot and anti-cloning implementations. However, the datasheet clarifies that GPIO1_6 retains standard GPIO functionality (e.g., sampling via PSR, interrupt generation) regardless of tamper enable status, meaning it can operate as a general-purpose I/O unless actively configured for tamper detection.

What memory types does MCIMX31LCVMN4C support natively through its EMI interface?

MCIMX31LCVMN4C supports DDR SDRAM, NAND Flash, NOR Flash, SDRAM, and SRAM natively through its External Memory Interface (EMI). The EMI block includes a Multi-Master Memory Interface (M3IF), Enhanced SDRAM Controller (ESDCTL), NAND Flash Controller (NFC), and Wireless External Interface Module (WEIM), enabling concurrent access to multiple memory types with configurable timing parameters - essential for boot-from-NAND, code execution from NOR, and high-bandwidth frame buffer storage in DDR.

Is MCIMX31LCVMN4C compatible with the same reference design and software stack as MCIMX31CVMN4C?

MCIMX31LCVMN4C shares identical pinout, package, electrical characteristics, and software-visible architecture with MCIMX31CVMN4C - except for the absence of GPU hardware. Freescale's documentation confirms functional equivalence for all non-GPU modules (IPU, VFP, SDMA, USB, etc.), and the same BSP, Linux kernel drivers, and reference schematics apply. Developers must disable GPU-dependent components (e.g., OpenGL ES libraries) but retain full compatibility for camera, display, audio, and security subsystems in the MCIMX31LCVMN4C.