NXP Semiconductors MCIMX253DJM4A

Overview

MCIMX253DJM4A 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 MCIMX253DJM4A datasheet, MCIMX253DJM4A pinout, MCIMX253DJM4A application, or MCIMX253DJM4A equivalent, key selection criteria include its –20°C to +70°C industrial temperature grade, 17 × 17 mm 0.8 mm pitch MAPBGA-400 package, DDR2 memory support up to 133 MHz, and hardware security features including DryIce tamper detection and secure boot.

Technical Context

The MCIMX253DJM4A implements a single-core ARM926EJ-S CPU with 16 KB L1 instruction and 16 KB L1 data cache, executing in Little Endian mode only. Its clock architecture includes a configurable CCM module supporting wait, stop, and doze power modes via selective peripheral clock gating.

Peripheral integration includes Smart DMA (SDMA) for offloading data movement, eSDHC controllers supporting SD/SDIO/MMC in 1-/4-/8-bit modes up to 200 Mbps, and a dedicated touchscreen controller (TSC) with 12-bit ADC for resistive touch panels. The device lacks FlexCAN, ESAI, CSI, and SIM interfaces-features present in MCIMX257/MCIMX258 variants per Table 2.

Key Specifications

Pinout & Package

MCIMX253DJM4A uses a 400-ball MAPBGA package (Case 5284, 17 × 17 mm, 0.8 mm pitch). Ball assignments follow the i.MX25 17×17 package map (Table 103), with dedicated power domains (QVDD core, NVDD_GPIO1/2, NVDD_DDR2), I/O banks grouped by voltage and function, and critical signals including USBPHY1_RREF (10 kΩ pull-down required), OSC32K_EXTAL/XTAL (32.768 kHz crystal interface), and BAT_VDD (DryIce backup supply).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCIMX253DJM4A, MCIMX257DJM4A adds peripheral interfaces at minimal cost premium while maintaining identical power profile and footprint, whereas i.MX6ULL GDR offers architectural upgrade path at expense of PCB redesign and software revalidation.

Availability

MCIMX253DJM4A is available at Aetrix Electronics and suitable for industrial HMI panels, residential gateways, and handheld scanners requiring stable component supply across multi-year production cycles.

Supply support for MCIMX253DJM4A 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 roots in Freescale's embedded processor heritage.

The i.MX25 product line was designed specifically for cost-sensitive, low-power industrial and consumer embedded applications requiring rich multimedia capability without complex SoC overhead - targeting graphical remote controls, control panels, and smart metering endpoints.

FAQ

What is the maximum DDR2 memory speed supported by the MCIMX253DJM4A?

The MCIMX253DJM4A supports DDR2 memory at up to 133 MHz, corresponding to a 266 MT/s data rate in double-data-rate mode. This is specified in the Electrical Characteristics section (Table 6) under "I/O supply voltage DDR (DDR2 mode)" and confirmed in the Introduction as enabling high-bandwidth graphics buffer access for the integrated LCD controller. Operation above this frequency violates DC operating conditions and may cause data corruption.

Does the MCIMX253DJM4A include hardware cryptographic acceleration?

The MCIMX253DJM4A does not include dedicated cryptographic acceleration blocks such as AES or SHA engines. Its security features are centered on the DryIce module (tamper detection, secure RTC, volatile key storage) and IIM fusebox (for storing cryptographic keys and chip identifiers), but all encryption/decryption operations must be performed in software on the ARM926EJ-S core. For hardware crypto, consider MCIMX258CJM4A which adds full security subsystem support.

Can the MCIMX253DJM4A operate in Big Endian mode?

No, the MCIMX253DJM4A supports Little Endian mode only, as explicitly stated in the Features section: "i.MX25 only supports Little Endian mode." The ARM926EJ-S core is configured at silicon level for fixed-endian operation, and no register or boot configuration can enable Big Endian behavior. Software must be compiled accordingly using ARM GCC flags like -mbig-endian (which will fail at link time for this part).

What external components are mandatory for USB functionality on the MCIMX253DJM4A?

For HS USB OTG operation, MCIMX253DJM4A requires an external 10 kΩ ±1% resistor on USBPHY1_RREF to set reference current, plus series 33 Ω resistors close to USBPHY1_DP/DM pins per Table 4 recommendations. For FS USB Host, USBPHY2_DM/DP require identical 33 Ω series resistors. No external PHY IC is needed - both PHYs are fully integrated. An external crystal (24 MHz) is also mandatory for USB PLL lock.

Is the MCIMX253DJM4A pin-compatible with other i.MX25 variants like MCIMX257DJM4A?

Yes, MCIMX253DJM4A is pin-compatible with MCIMX257DJM4A and MCIMX258DJM4A in the same 17 × 17 mm MAPBGA-400 package (Case 5284), sharing identical ball map (Table 103). All share identical power, clock, reset, and core I/O pin assignments. Unused peripheral signals (e.g., FlexCAN pins on MCIMX253DJM4A) are NC or configurable as GPIO, enabling hardware reuse across variants with only firmware changes.