NXP Semiconductors MCIMX285AVM4C

Overview

MCIMX285AVM4C from NXP Semiconductors is an AEC-Q100 qualified automotive applications processor based on the ARM926EJ-S core operating at up to 454 MHz, featuring integrated LCD interface, 4-wire touchscreen controller, dual FlexCAN interfaces, 10/100 Ethernet MAC, and on-chip power management unit with Li-Ion battery charging capability - deployed in vehicle infotainment gateways and telematics control units.

For engineers reviewing the MCIMX285AVM4C datasheet, MCIMX285AVM4C pinout, MCIMX285AVM4C application, or MCIMX285AVM4C equivalent, key selection considerations include its -40°C to +85°C industrial temperature grade, MAPBGA-289 (14 × 14 mm, 0.8 mm pitch) package, LCDIF + PXP pixel pipeline for display acceleration, and functional differentiation from i.MX281 (e.g., absence of LCD/touch support).

Technical Context

The MCIMX285AVM4C implements a tightly integrated system-on-chip architecture with dual bus bridges (APBH/APBX), unified DMA controllers, and hardware-accelerated peripherals including BCH ECC for NAND Flash, DCP for AES-128/SHA-1/SHA-256 crypto operations, and PXP for real-time alpha-blending, rotation, and color-space conversion without external memory access.

Its clock subsystem uses a 24 MHz crystal input feeding PLLs with fractional dividers to generate domain-specific clocks; power sequencing is managed by the PMU's triple-output DC-DC converter and linear regulators, supporting seamless transition between 5 V supply and battery operation while delivering regulated VDD4P2 (4.2 V) and monitoring brownout conditions across VDDD, VDDA, VDDIO, and BATT rails.

Key Specifications

Pinout & Package

MCIMX285AVM4C is housed in a plastic MAPBGA-289 package measuring 14 mm × 14 mm with 0.8 mm ball pitch. Pin assignments follow the i.MX285-specific ball map (Document IMX28AEC Rev. 4, Section 4.5), with dedicated signal groups for DDR2/LV-DDR2 memory interface, LCD data/control, CAN_H/CAN_L, USB_DP/USB_DN, and PMU power rails.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCIMX283AVK4B, MCIMX285AVM4C adds display subsystem and second CAN for infotainment/gateway use; versus MCIMX287AVK4B, it trades extended temperature rating and updated HAB version for lower cost and standard industrial qualification.

Availability

MCIMX285AVM4C is available at Aetrix Electronics and suitable for automotive infotainment systems, vehicle gateway modules, and telematics control units requiring stable component supply across extended production lifecycles.

Supply support for MCIMX285AVM4C 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.MX28 family - including MCIMX285AVM4C - was designed specifically for cost-optimized, AEC-Q100 qualified automotive infotainment and gateway applications, integrating multimedia processing, networking, and power management in a single SoC.

FAQ

What is the maximum operating frequency of the ARM926EJ-S core in MCIMX285AVM4C?

The MCIMX285AVM4C integrates an ARM926EJ-S core rated for operation up to 454 MHz under specified voltage and temperature conditions (VDDD = 1.35–1.55 V, TA = –40°C to +85°C). This frequency is achieved using the on-chip PLL with fractional divider, and performance is sustained across the full industrial temperature range with appropriate thermal management.

Does MCIMX285AVM4C support secure boot, and what cryptographic algorithms are hardware-accelerated?

Yes, MCIMX285AVM4C supports high-assurance boot (HAB4) with hardware-accelerated 128-bit AES decryption, SHA-1, and SHA-256 hashing. These functions are implemented in the Data Co-Processor (DCP) module, enabling fast, tamper-resistant firmware authentication during power-on initialization without CPU overhead.

How does the power management unit (PMU) in MCIMX285AVM4C handle battery charging and supply switching?

The MCIMX285AVM4C PMU integrates a Li-Ion battery charger, triple-output DC-DC converter, and supply monitoring circuitry. It supports automatic transition between 5 V external supply and battery power, generates VDD4P2 (4.2 V) for internal loads, and enforces current limits to prevent overloading the 5 V source - all configurable via register writes without external components.

What display interfaces and resolutions does MCIMX285AVM4C support through its LCDIF and PXP blocks?

MCIMX285AVM4C supports 24-bit RGB (DOTCLK) and system-mode LCD interfaces up to WVGA (800×480) resolution via LCDIF, with hardware-accelerated rotation, scaling, alpha-blending, and color-space conversion handled by the Pixel Pipeline (PXP). The PXP operates independently of CPU cycles, enabling smooth GUI rendering with minimal memory bandwidth consumption.

Is MCIMX285AVM4C pin-compatible with other i.MX28 variants such as MCIMX281AVM4C?

No, MCIMX285AVM4C is not pin-compatible with MCIMX281AVM4C. While both use the same MAPBGA-289 package, their signal assignments differ significantly - particularly for LCD, touchscreen, and certain peripheral pins - as confirmed by separate ball maps in the i.MX28 datasheet (Sections 4.4 and 4.5). PCB layout must be specific to the i.MX285 variant.