NXP Semiconductors MCIMX257DJM4A

Overview

MCIMX257DJM4A from NXP Semiconductors (formerly Freescale) is an ARM926EJ-S-based multimedia applications processor operating at up to 400 MHz, featuring 128 KB on-chip SRAM, integrated 10/100 Ethernet MAC, dual USB PHYs (HS OTG + FS Host), and LCD controller with alpha blending. It targets industrial HMI, residential gateways, and handheld scanners requiring deterministic real-time response and low-power operation.

For engineers reviewing the MCIMX257DJM4A datasheet, MCIMX257DJM4A pinout, MCIMX257DJM4A application, or MCIMX257DJM4A equivalent, key selection criteria include its -20°C to +70°C industrial temperature grade, 17×17 mm 0.8 mm pitch MAPBGA-400 package, support for DDR2 up to 133 MHz, and integrated FlexCAN, ESAI, and SIM interfaces - all confirmed in i.MX25CEC Rev. 10.

Technical Context

The MCIMX257DJM4A implements a single ARM926EJ-S core with 16 KB L1 instruction and 16 KB L1 data cache, operates exclusively in Little Endian mode, and integrates Smart DMA (SDMA) for offloading peripheral transfers. Its clock control module (CCM) manages wait/stop/doze power modes by dynamically gating peripheral clocks.

It includes dedicated security hardware: DryIce tamper-detect circuitry with MESH_C/MESH_D and TAMPER_A/TAMPER_B inputs, NVCC_DRYICE backup supply output, and IIM fusebox for cryptographic key storage and chip identification - all active under battery-backed operation.

Key Specifications

Pinout & Package

MCIMX257DJM4A is housed in a 17×17 mm, 0.8 mm pitch MAPBGA-400 plastic package (Case 5284). Ball assignments follow i.MX25CEC Rev. 10 Table 103 and Section 4.3 (Signal Contact Assignments - 17×17 mm, 0.8 mm pitch).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCIMX257DJM4A, MCIMX257CJM4A extends thermal reliability for harsh environments, while MCIMX253DJM4A removes specific connectivity modules to lower unit cost - both retain full pin compatibility and software compatibility within the i.MX25 family.

Availability

MCIMX257DJM4A is available at Aetrix Electronics and suitable for industrial HMI panels, residential gateways, and handheld scanners requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for production ramp.

Supply support for MCIMX257DJM4A 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 formed from the spin-off of Philips' semiconductor division, now headquartered in Eindhoven, Netherlands, with leadership in secure connectivity and edge processing solutions.

The i.MX25 product line was designed specifically for cost-sensitive, low-power industrial and consumer embedded applications requiring rich multimedia capability, hardware security, and robust peripheral integration - targeting markets such as smart metering, point-of-sale, and portable medical devices.

FAQ

What is the maximum DDR2 memory speed supported by the MCIMX257DJM4A?

The MCIMX257DJM4A supports DDR2 memory at up to 133 MHz, as specified in the i.MX25CEC Rev. 10 datasheet Section 1. This enables sustained bandwidth for graphics frame buffers and application code execution in resource-constrained embedded systems using the MCIMX257DJM4A.

Does the MCIMX257DJM4A include an integrated USB PHY?

Yes, the MCIMX257DJM4A integrates both a high-speed USB 2.0 OTG PHY and a full-speed USB 2.0 host PHY, eliminating the need for external transceivers. These PHYs are fully compliant with USB 2.0 specifications and are documented in i.MX25CEC Rev. 10 Section 2 and Table 2.

What security features are implemented in the MCIMX257DJM4A?

The MCIMX257DJM4A includes DryIce tamper detection with MESH_C/MESH_D and TAMPER_A/TAMPER_B pins, NVCC_DRYICE backup supply output, IIM fusebox for cryptographic key storage, and hardware-enforced secure boot. These features are detailed in i.MX25CEC Rev. 10 Sections 2 and 3.1.2.

Is the MCIMX257DJM4A pin-compatible with other i.MX25 variants?

Yes, the MCIMX257DJM4A uses the same 17×17 mm, 0.8 mm pitch MAPBGA-400 package and ball map (Table 103) as MCIMX257CJM4A, MCIMX253DJM4A, and other i.MX257/i.MX253 variants in the same package option - enabling drop-in replacement where thermal and feature requirements align.

What is the operating temperature range for the MCIMX257DJM4A?

The MCIMX257DJM4A is rated for an industrial operating ambient temperature range of -20°C to +70°C, as confirmed in Table 1 (Ordering Information) of i.MX25CEC Rev. 10. This makes it suitable for enclosed but uncooled industrial control panels and residential infrastructure equipment.