MCIMX233DJM4B
MCIMX233DJM4B - i.MX23 ARM926EJ-S MPU, 454 MHz, 169-MAPBGA | NXP Semiconductors
The NXP Semiconductors MCIMX233DJM4B is an i.MX23 applications processor built around the ARM926EJ-S core running at up to 454 MHz, integrating 16 KB instruction / 16 KB data cache, an LCD controller, USB HS Device/Host with on-chip PHY, three UARTs, two SSP ports, I2C master, two serial audio interfaces, SPDIF, a 6-channel 12-bit Low-Resolution ADC, an integrated Power Management Unit (PMU), and analog audio, all housed in a 169-ball MAPBGA (11x11 mm) package. The 'DJM4B' suffix identifies the commercial-grade 169-MAPBGA variant with the full feature set enabled.
An applications processor (AP) is a system-on-chip (SoC) class of integrated circuit that combines a microprocessor core, memory interfaces, peripherals, and increasingly on-chip analog blocks to run a complete end-product application without external companion logic. Within NXP's i.MX family hierarchy, the i.MX23 sits in the low-power ARM9 stratum: applications processor -> multimedia applications processor -> i.MX family -> ARM9 stratum, with descendants i.MX25, i.MX27, i.MX28 and later Cortex-A series such as i.MX6 and i.MX8.
Key features include ARM926EJ-S core, 454 MHz maximum clock, 16 KB I-cache and 16 KB D-cache, integrated Power Management Unit (PMU) with linear regulators and DCDC control, mixed-signal analog audio block with headphone amplifier, LCD controller supporting digital TFT panels, USB High-Speed with integrated PHY (device and host roles), three UARTs, two SSP ports, I2C master, two SAI (serial audio interface) blocks, SPDIF transceiver, 6-channel 12-bit Low Resolution ADC, and on-chip boot ROM supporting NAND, SD/MMC, SPI flash and USB boot. Operating junction temperature range is -40 C to +85 C for the commercial grade.
The i.MX23 was Freescale's first applications processor to integrate a full PMU directly on-die, allowing the part to be powered from a single 3.6 V to 4.5 V Li-Ion cell or USB bus without external voltage rails. This integration, combined with the 11x11 mm MAPBGA, made the i.MX23 popular in cost-sensitive portable media players, e-readers, and entry-level industrial HMI panels between 2009 and 2014.
Typical applications include portable media players, e-readers, IP cameras, low-cost industrial human-machine interface (HMI) panels, point-of-sale terminals, and connected sensor hubs. The integrated PMU and USB HS PHY reduce BOM count, while the 454 MHz ARM926EJ-S headroom supports light Linux/MQX RTOS workloads and modest LCD GUI rendering.
Designers should plan the PCB stackup around the 169-MAPBGA's 0.65 mm pitch and provide a solid GND pour plus thermal vias under the exposed die paddle for the 1 W worst-case dissipation. The on-chip PMU requires careful sequencing of DCDC vs LDO modes and adequate input bulk capacitance to handle the audio amplifier inrush current without sagging the digital supply.
This page synthesizes distributor pricing, lifecycle context, drop-in alternative guidance, and practical design considerations not consolidated in the Freescale/NXP reference manual, enabling sourcing and design engineers to evaluate the MCIMX233DJM4B for both new designs and legacy support commitments.
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