NXP Semiconductors MCIMX233DJM4C

Overview

MCIMX233DJM4C from NXP is a highly integrated ARM926EJ-S-based applications processor targeting cost-sensitive, low-power embedded systems. It features a 454 MHz CPU core, 128 KB on-chip SRAM, 16-bit DDR2/DDR3/LPDDR2 memory interface, dual USB 2.0 OTG controllers with PHY, and hardware-accelerated 2D graphics for HMI display control in industrial HMIs and portable medical devices.

For engineers reviewing the MCIMX233DJM4C datasheet, MCIMX233DJM4C pinout, MCIMX233DJM4C application, or MCIMX233DJM4C equivalent, key selection criteria include its single-core ARM9 architecture, 128 KB embedded SRAM, 16-bit external memory bus, dual USB OTG support, and qualification for industrial temperature operation (–40°C to +85°C).

Technical Context

The MCIMX233DJM4C implements an ARM926EJ-S core with Jazelle Java acceleration and Thumb-2 instruction set support, paired with tightly coupled 128 KB SRAM for deterministic real-time execution. Its memory subsystem supports 16-bit DDR2/DDR3/LPDDR2 at up to 200 MHz clock rate (400 MT/s), enabling efficient data throughput for display and audio buffers without external SDRAM complexity.

Peripheral integration includes two USB 2.0 OTG controllers with integrated PHYs, four UARTs, three SPI interfaces, two I²C buses, a 10/100 Ethernet MAC, and a dedicated LCD controller supporting up to 1024×768 resolution. All peripherals are managed via a centralized clock gating and power domain architecture to minimize active and standby power consumption.

Key Specifications

Pinout & Package

MCIMX233DJM4C is housed in a 208-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignment follows NXP's standardized i.MX233 ball-out mapping optimized for signal integrity and thermal dissipation in space-constrained PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with i.MX287 and STM32MP157C, the MCIMX233DJM4C delivers the lowest bill-of-materials cost and smallest PCB footprint for single-core ARM9 applications requiring industrial temperature range, integrated LCD, and dual USB OTG - without over-provisioning compute or memory bandwidth.

Availability

MCIMX233DJM4C is available at Aetrix Electronics and suitable for industrial HMI terminals, portable medical monitors, and smart energy meters requiring stable component supply across extended product lifecycles.

Supply support for MCIMX233DJM4C 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.MX233 series was designed specifically for cost-optimized, low-power embedded applications demanding robust real-time performance, integrated display control, and long-term industrial availability - not general-purpose computing.

FAQ

What is the maximum operating frequency of the MCIMX233DJM4C CPU core?

The MCIMX233DJM4C integrates an ARM926EJ-S core rated for operation at 454 MHz. This frequency is guaranteed across the full industrial temperature range (–40°C to +85°C) and supported by the on-chip PLL and voltage regulator. The MCIMX233DJM4C does not support dynamic frequency scaling beyond this fixed rate, ensuring deterministic timing for real-time tasks.

Does the MCIMX233DJM4C support external SDRAM or only DDR2/DDR3/LPDDR2?

The MCIMX233DJM4C supports only DDR2, DDR3, and LPDDR2 memory types via its 16-bit interface - it does not support legacy SDR SDRAM or mobile DDR (mDDR). The memory controller is optimized for burst transfers and includes configurable timing parameters to accommodate discrete DDR chips or small-capacity modules up to 256 MB.

Can the MCIMX233DJM4C boot directly from NAND flash without external boot ROM?

Yes, the MCIMX233DJM4C includes an on-chip ROM bootloader that supports NAND flash boot with hardware ECC correction (4-bit per 512-byte sector). Boot mode is selected using BOOT_MODE[1:0] pins, and the MCIMX233DJM4C automatically initializes NAND geometry, reads the first page, and executes the primary bootloader stored in the first block.

What display resolutions does the integrated LCD controller in the MCIMX233DJM4C support?

The MCIMX233DJM4C LCD controller supports RGB parallel interfaces up to 1024×768 pixels at 60 Hz with 24-bit color depth. It includes programmable timing generators, horizontal/vertical sync polarity control, and support for both active-high and active-low pixel clocks - enabling direct connection to common industrial TFT panels without external timing ICs.

Is the MCIMX233DJM4C pin-compatible with other i.MX23 family members like MCIMX233DVK4B?

No, the MCIMX233DJM4C (208-pin LQFP) is not pin-compatible with MCIMX233DVK4B (256-pin LQFP). While both share the same ARM926EJ-S core and peripheral set, their package footprints, pin counts, and I/O assignments differ significantly. Migration requires PCB redesign; however, software and register-level compatibility is maintained across the i.MX233 family.