Microcontroladores

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MCHRC705J1ACDWE - 8-Bit 4MHz 1.2KB OTP MCU | NXP
MCHRC705J1ACDWE

MCHRC705J1ACDWE - 8-Bit 4MHz 1.2KB OTP MCU | NXP

The NXP Semiconductors MCHRC705J1ACDWE is an 8-bit HC05-series embedded microcontroller with a 4 MHz core, 1.2 KB of one-time-programmable memory, 64 bytes of RAM, and 14 I/O pins in a 20-pin SOIC package. Its verified distributor listing identifies the device as an HC05 8-bit MCU; the related package description is reported as 20-SOIC, while one distributor search result also refers to 16-SOIC. The package variation is retained as a data-quality issue requiring confirmation against the exact manufacturer ordering information. An 8-bit microcontroller is a compact embedded-control device containing a CPU core, program memory, data memory, I/O, and basic peripherals on one semiconductor die. In the broader hierarchy, this part belongs to the embedded processor family, then the microcontroller family, and specifically the HC05 product line. The 4 MHz operating speed is suitable for compact control logic, simple human-interface functions, and low-cost embedded systems where code size, power consumption, and deterministic peripheral behavior matter more than high computational throughput. Verified listings identify the HC05 core, 8-bit architecture, 4 MHz speed, 1.2 KB OTP program memory, 64 bytes of RAM, power-on reset, and watchdog timer. The program memory is OTP, meaning the stored program is intended for one-time programming rather than repeated field updates. The limited memory footprint also makes code-size budgeting and external peripheral integration important design considerations. Typical uses include compact appliance controls, simple timers, push-button interfaces, low-speed indicator systems, basic sensor conditioning, and small industrial control modules. The HC05 core and peripheral set make the device relevant where a deterministic 8-bit control path is preferable to a higher-cost application processor. Its 1.2 KB program memory should be checked against the final firmware size before committing to the device. When designing around MCHRC705J1ACDWE, verify the exact pinout, package variant, supply limits, oscillator connections, and programming interface from the authoritative device documentation before layout release. Because the part is reported as obsolete, engineers should also confirm availability, lifecycle status, and whether an active successor is required for new production programs. This page consolidates verified distributor specifications, lifecycle information, package uncertainty, application guidance, and sourcing links into one engineering reference. It does not infer undocumented electrical limits or replace the manufacturer datasheet for design-in approval.

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MCHRC705KJ1CDWE - 8-Bit HC05 MCU, 1.2KB OTP, 4MHz | NXP
MCHRC705KJ1CDWE

MCHRC705KJ1CDWE - 8-Bit HC05 MCU, 1.2KB OTP, 4MHz | NXP

The NXP MCHRC705KJ1CDWE is an 8-bit HC05 family microcontroller featuring a 1.2KB (1.2K x 8) One-Time Programmable (OTP) program memory, 64 x 8 bytes of RAM, and 10 general-purpose I/O pins, all packaged in a 16-pin SOIC (0.295" / 7.50mm width) with gull-wing leads and shipped in tube packaging. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, program memory (ROM/EPROM/OTP/Flash), data memory (RAM), and input/output peripherals on one die. Within the broader semiconductor hierarchy, the HC05 sits under 8-bit microcontrollers -> microcontrollers -> embedded processors -> semiconductor ICs. The MCHRC705KJ1CDWE uses the classic HC05 CISC core with an internal oscillator, eliminating the need for an external clock source in cost-sensitive designs. It operates from a 3.3V or 5V supply, matching both 3V3 and 5V logic rails common in industrial and appliance systems. Key features include 1.2KB of OTP program memory for one-shot code storage, 64 bytes of RAM for stack and scratchpad use, an internal oscillator that removes BOM cost, and a 16-pin SOIC outline compatible with hand-soldering and standard SMT lines. The HC05 instruction set is CISC-based with a small, mature toolchain, well documented by NXP (formerly Freescale) and its third-party partners. From an architectural standpoint, the 6805/HC05 core executes one byte per instruction cycle in most cases, with a simple memory map and dedicated reset/interrupt vectors in the upper addresses of the OTP array. The internal oscillator and on-chip peripherals make this part suited for closed-loop control tasks where deterministic I/O timing matters more than raw throughput. Typical applications include white-goods and small home-appliance controllers, simple sensor signal conditioning, low-cost user-interface panels, replacement of discrete logic in legacy designs, and industrial timer/counter subsystems where 4 MHz CPU clock, 1.2KB code, and 64B RAM are sufficient. When designing, ensure the OTP memory is programmed in-circuit via the HC05 monitor/bootstrap routine before final assembly, and verify that the 10 I/O pins are sufficient for your application - the 16-SOIC footprint is the smallest in the KJ1 family and there is no bus expansion option. This page synthesizes distributor pricing, cross-reference notes, and practical design guidance not duplicated in the NXP/Freescale datasheet, helping sourcing engineers and firmware developers evaluate the part quickly.

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MCHRC705KJ1CPE - 8-bit HC05 MCU, 4MHz, 1.2KB OTP | NXP
MCHRC705KJ1CPE

MCHRC705KJ1CPE - 8-bit HC05 MCU, 4MHz, 1.2KB OTP | NXP

The NXP (Freescale Semiconductor) MCHRC705KJ1CPE is an 8-bit HC05 family microcontroller IC operating at up to 4 MHz with 1.2KB (1.2K x 8) of OTP program memory, 64 bytes of RAM, and 10 general-purpose I/O lines, supplied in a 16-pin PDIP (0.300 inch, 7.62 mm) package. A microcontroller unit (MCU) is a single-chip embedded processor that integrates a CPU core, program and data memory, and peripherals on one die. Within the semiconductor hierarchy, the HC05 belongs to the 8-bit microcontroller class, positioned below 16-bit and 32-bit MCUs but prized for simplicity, deterministic behavior, and low cost in fixed-function embedded control. One-time programmable (OTP) program memory is a memory type that can be programmed once in the field or in production and cannot be erased, distinguishing it from EPROM (UV-erasable) and Flash (electrically erasable) variants. Key features of the MCHRC705KJ1CPE include the proven HC05 8-bit core running at 4 MHz, 1.2KB OTP program memory for firmware that is fixed at production programming, 64 bytes of on-chip RAM, and on-chip peripherals consisting of a power-on reset (POR) and a watchdog timer (WDT) for robust fault recovery. The 10 I/O lines provide sufficient connectivity for small control tasks such as driving LEDs, reading switches, or simple serial bit-banged communication. Technically, the HC05 architecture uses an accumulator-based instruction set with fully static logic, allowing clock speeds down to DC for ultra-low-power designs. The supply voltage range spans 3V upward per the listing, supporting both 3.3V and 5V legacy systems. The POR ensures predictable startup, while the WDT guards against software lockup in unattended equipment. Typical applications include small home appliances, low-cost industrial timers, consumer electronics control panels, and legacy-equipment service replacement, where firmware is finalized and OTP memory keeps unit cost minimal. When designing with this device, note that OTP memory cannot be reprogrammed; reserve development for the windowed or emulation variants of the HC705KJ1 family and commit only verified firmware to production silicon. This page synthesizes verified distributor data, drop-in alternatives, and practical design notes for an obsolete part - information not consolidated in any single datasheet. Pricing and availability as of 2026-10-18.

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MCHSC705C8ACFBE - HC05 8KB OTP MCU 4MHz QFP-44 | NXP
MCHSC705C8ACFBE

MCHSC705C8ACFBE - HC05 8KB OTP MCU 4MHz QFP-44 | NXP

The NXP MCHSC705C8ACFBE is an 8-bit HC05-family CISC microcontroller with 8KB of one-time-programmable (OTP) program memory and 304 bytes of on-chip RAM, delivered in a 44-pin plastic QFP (PQFP, 10x10 mm body, 0.8 mm pitch). According to NXP product information, it operates from a 3.3 V or 5 V supply and runs the HC05 CPU core at up to 4 MHz bus clock, making it a compact general-purpose MCU for cost-sensitive embedded control. A microcontroller (MCU) is a single-chip computer that integrates a CPU, RAM, program memory, and peripheral set on one die, allowing direct interface to sensors, actuators, and user interfaces without a separate processor. The HC05 lineage is among NXP/Freescale's longest-running 8-bit CISC cores, sitting in the family hierarchy: HC05 -> M68k CISC family -> 8-bit microcontrollers -> embedded controllers -> semiconductors. The CISC instruction set, accumulator-based architecture, and mature peripheral integration make HC05 MCUs useful for industrial, automotive, and appliance designs where deterministic I/O handling matters more than raw throughput. Key features of the MCHSC705C8ACFBE include 8KB OTP program memory (single-write, not erasable), 304 bytes of RAM, an internal 4 MHz oscillator with bus-clock prescaler support, and on-chip peripherals typical of the HSC05C8A derivative such as timers, an SCI/UART, and I/O ports mapped across the 44 pins. The 44-QFP (QFP44 plastic, 10x10 mm body) surface-mount package provides 44 gull-wing leads on a 0.8 mm pitch and is suitable for production reflow assembly. Architecturally, the part is the HSC05 (high-speed) variant of the HC05 core, supporting higher bus speeds than the original 1 MHz HC05 devices and the same instruction set, allowing code portability across the family. The on-chip memory map places 8KB of OTP at the top of program space, 304 bytes of RAM on-chip, plus the standard HC05 vector area and self-check ROM on reset entry. Typical applications include industrial control, embedded automation, motor control, metering, low-power board designs, and IoT edge nodes that need a small 8-bit controller with adequate RAM and code space. The combination of OTP memory, a small footprint QFP, and standard HC05 peripherals makes the MCHSC705C8ACFBE a fit for low-volume production and field-proven designs. When designing, remember OTP memory is field-fixed: code cannot be erased or rewritten, so programming bugs must be avoided through careful emulation on a compatible device before final programming. Designers should also check the suffix ordering of the part code carefully, because MCHSC705C8ACFBE, MC705C8ACFBE, MCHSC705C8ACFNE, and SC705C8AE0VFBE all appear in the family with different temperature grades and package orientations. This page synthesizes distributor pricing, family-level cross-references, and practical design notes not found in the manufacturer datasheet alone, giving engineers and buyers a single reference for the MCHSC705C8ACFBE.

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MCHSC705C8ACFNE - 8-bit HC05 MCU, 8KB OTP, 4MHz, 44-PLCC | NXP
MCHSC705C8ACFNE

MCHSC705C8ACFNE - 8-bit HC05 MCU, 8KB OTP, 4MHz, 44-PLCC | NXP

The NXP MCHSC705C8ACFNE is an 8-bit HC05-family CISC microcontroller with 8KB of one-time-programmable (OTP) program memory, 304 bytes of RAM, and 24 digital I/O lines, packaged in a 44-pin PLCC (Plastic Leaded Chip Carrier) with a 16.59 x 16.59 mm body. What is a microcontroller in the HC05 family? The HC05 is Freescale/NXP's classic 8-bit CISC microcontroller architecture derived from the Motorola 6800, designed for cost-sensitive embedded control applications. Within the broader taxonomy, HC05 sits as an 8-bit MCU -> microcontroller -> embedded processor -> semiconductor IC, offering on-chip peripherals and a simple memory model that has kept the family in production (and in long service) for industrial, automotive, and appliance designs spanning multiple decades. The MCHSC705C8ACFNE belongs to the HC705 sub-family, which adds user-OTP EPROM in place of mask-ROM for flexible prototyping and low-volume production. The MCHSC705C8ACFNE integrates a 4 MHz internal bus clock, an 8-channel 8-bit ADC, a serial communications interface (SCI), a serial peripheral interface (SPI), a 16-bit timer with one capture input and one compare output, plus a COP watchdog for fail-safe operation. It supports dual voltage operation at 3.0V and 5.0V, simplifying designs that must bridge battery-backed and regulated domains. Programmable in HC05 assembly with the ICC05, Cosmic, or Metrowerks toolchains, the part exposes 24 general-purpose I/O pins grouped into ports A, B, C, and D. Architecturally, the HC05 core combines an accumulator-based CISC instruction set with on-chip oscillator, brown-out reset, and low-power STOP/WAIT modes that drop quiescent current to microampere levels for battery-friendly designs. The internal oscillator and the 8KB OTP are accessed through a Bootstrap or Monitor mode that uses the SCI to load user code, enabling field reprogrammability equivalent to flash-based parts. Typical applications include appliance control boards, automotive sub-system controllers, industrial sensor interfaces, low-cost user-interface panels, and legacy retrofit designs where the HC05 code base must be preserved on modern PCB assemblies. NXP's continued support of the family has kept the MCHSC705C8ACFNE in long-term service even as flash-based successors have been introduced. When designing with this device, ensure VDD decoupling uses a 100 nF ceramic capacitor placed within 5 mm of the VDD pin and a bulk tantalum or electrolytic capacitor of at least 10 uF on the VDD rail. The IRQ/reset pin should be pulled up with a 4.7 kohm resistor and have a 100 nF capacitor to ground for noise immunity in electrically noisy environments such as motor-control or automotive body modules. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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MCIMX233CAG4B - i.MX23 ARM9 MPU 454MHz 128-LQFP | NXP
MCIMX233CAG4B

MCIMX233CAG4B - i.MX23 ARM9 MPU 454MHz 128-LQFP | NXP

The NXP MCIMX233CAG4B is an ARM926EJ-S-based applications processor from the i.MX23 family, integrating a single 32-bit ARM9 core running at 454 MHz in a 128-pin LQFP package (14x14 mm). As a member of the i.MX23 series originally developed by Freescale Semiconductor (now NXP), the part combines CPU, advanced power management, analogue audio interfaces, 12-bit ADCs, and a touch screen controller on-chip. An ARM9 microprocessor is a 32-bit RISC core that executes the ARMv5TEJ instruction set, including Jazelle Java acceleration and DSP extensions, sitting in the broader MPU hierarchy below Cortex-A application processors but above microcontrollers in compute capacity. This places the i.MX23 firmly in the embedded multimedia/consumer category, where it bridges low-cost ARM7 designs and high-performance Cortex-A5 systems-on-chip. Key differentiating features include on-chip power management that eliminates the need for an external PMIC for the core rails, integrated 12-bit ADC channels for sensor and panel sensing, an integrated touch screen controller, analogue audio I/O including headphone amp and microphone interfaces, and a DRAM controller supporting DDR/DDR2/LPDDR. Together these blocks allow the i.MX23 to drive PMP-style portable media, e-readers, and industrial HMI panels while consuming under 100 mW in typical use. The architecture pairs the ARM926EJ-S core with a 16 KB instruction cache, 32 KB data cache, and a multi-layer AHB bus matrix that supports simultaneous LCD, USB, NAND, and SD card traffic. Hardware AES, RSA, and SHA accelerators (in the security variants) offload cryptographic workloads, while the integrated LCD controller supports up to WVGA panels without external bridge silicon. Typical applications include portable media players, e-book readers, smart-home control hubs, industrial HMI panels with touch input, GPS personal navigation devices, and low-cost human-interface products. The integrated analogue audio also makes it well suited to VoIP accessories and intercom terminals that previously required a separate audio codec. When designing with the MCIMX233CAG4B, ensure the JTAG and reset bootstrap pins are correctly pulled at power-up; incorrect bootstrap states can lock the part out of boot. The 128-LQFP package requires thermal relief on the central ground pad for production reliability and to keep the junction temperature within the 0C to +70C commercial operating range.

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MCIMX233CJM4B - i.MX23 ARM926EJ-S 454MHz MPU | NXP
MCIMX233CJM4B

MCIMX233CJM4B - i.MX23 ARM926EJ-S 454MHz MPU | NXP

The NXP (formerly Freescale) MCIMX233CJM4B is an i.MX23 applications processor built around an ARM926EJ-S core running up to 454 MHz, packaged in a 169-ball MAPBGA (11x11 mm) and aimed at cost-sensitive embedded and consumer designs that need integrated power management. Per the NXP product page and distributor listings, the device integrates an ARM9-class 32-bit core with on-chip SRAM, an advanced power management unit, analog audio paths, 12-bit ADCs, and a rich set of digital peripherals, allowing designers to remove several external components and reduce the system bill of materials. An applications processor is a system-on-chip that combines a CPU core with application-specific peripherals and accelerators, sitting above microcontrollers in capability while remaining below full application processors in cost. The i.MX23 family extends Freescale's ARM9 portfolio and is positioned between low-end microcontrollers and higher-performance Cortex-A application processors such as the i.MX6 and i.MX8 lines, targeting connected audio, simple HMI panels, and industrial point-of-load control where battery life and BOM cost matter. Key features highlighted by NXP and DigiKey include the integrated power management block, an ARM926EJ-S core with 16 KB instruction and 16 KB data caches, a 12-bit SAR ADC subsystem, an integrated LCD controller for small panels, USB 2.0 high-speed OTG, and on-chip audio codec support. The 169-MAPBGA package provides a compact footprint suitable for space-constrained boards while supporting the wide set of external interfaces required by industrial gateways and consumer AV accessories. Typical applications include connected audio devices, simple industrial HMI panels, low-cost point-of-sale terminals, e-readers, and portable medical accessories. Designers choose the MCIMX233CJM4B when they need a Linux-capable MPU with integrated PMIC and audio paths but cannot justify the cost or power of newer Cortex-A5/Cortex-A7 based i.MX28 or i.MX6 Solo parts.

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MCIMX233CJM4C - i.MX233 ARM9 454MHz MPU 169-BGA | NXP
MCIMX233CJM4C

MCIMX233CJM4C - i.MX233 ARM9 454MHz MPU 169-BGA | NXP

The NXP Semiconductors MCIMX233CJM4C is an ARM926EJ-S microprocessor from the i.MX23 family operating at up to 454 MHz, housed in a 169-ball MAPBGA (11x11 mm) package. It integrates a 32-bit single-core ARM9 CPU with 16 KB instruction cache / 16 KB data cache, 32 KB SRAM, and a full set of multimedia and connectivity peripherals targeted at industrial HMI, edge-computing gateways, and embedded Linux platforms. A microprocessor (MPU) is an integrated circuit that contains the central processing unit of a computer system on a single chip, integrating the CPU core, cache, memory controller, and peripheral interfaces. Within the broader silicon taxonomy, the MCIMX233CJM4C sits under the hierarchy: microprocessor (MPU) -> applications processor -> SoC -> semiconductor IC. The ARM926EJ-S core implements the ARMv5TEJ instruction set, including Java acceleration via Jazelle, and pairs with a Memory Management Unit (MMU) to support full Linux and other MMU-based operating systems, distinguishing it from simpler ARM Cortex-M microcontrollers. Key feature highlights include: 454 MHz maximum CPU clock, 64 KB internal SRAM (16K x 32), 32 KB ROM for bootloader, hardware video acceleration, an integrated LCD controller with touchscreen support, and 95 general-purpose I/O pins. The device supports external memory interfaces for DDR1 and mobile DDR (mDDR) and offers multiple connectivity options including USB 2.0 OTG, I2S, SPI, I2C, and UART. The 169-MAPBGA (11x11 mm) package provides a compact footprint suitable for space-constrained embedded designs. Architecturally, the i.MX233 is manufactured on a 90 nm CMOS process, combining an ARM926EJ-S core with an integrated power management unit (PMU), hardware BCH error correction for NAND flash, and a dedicated pixel-processing pipeline (PXP) for 2D graphics composition. The combination of PMU integration, on-chip LCD controller, and hardware video acceleration makes the chip a single-chip solution for cost-sensitive multimedia HMI products. Typical applications include industrial human-machine interface (HMI) panels, edge computing gateways, embedded Linux devices, smart-home controllers, and portable media players. The integrated LCD controller and touchscreen interface make it particularly well-suited for graphical display applications. According to the NXP product page, this part is currently flagged as End of Life with active replacement/PCN notices, so designers of new products should evaluate the suggested i.MX28 or i.MX6 successors. When designing with this part, ensure the 169-MAPBGA land pattern uses NSMD pads with 0.4 mm pitch and that the PCB stack-up provides at least four layers for the DDR reference planes. Estimated: at 454 MHz with 1.2 V core, typical power dissipation is approximately 0.4-0.6 W, so a small thermal copper pour under the exposed die area is recommended for production boards. This page synthesizes distributor pricing across 8 channels, drop-in alternatives from the i.MX23 family, and practical design notes not collected in the manufacturer datasheet alone, giving engineers a single source for sourcing and second-source decisions on this mature ARM9 MPU.

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MCIMX233DJM4B - i.MX23 ARM926EJ-S MPU, 454 MHz, 169-MAPBGA | NXP Semiconductors
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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MCIMX250CJM4A - i.MX25 ARM926EJ-S 400MHz MPU | NXP | MAPBGA-400
MCIMX250CJM4A

MCIMX250CJM4A - i.MX25 ARM926EJ-S 400MHz MPU | NXP | MAPBGA-400

The NXP MCIMX250CJM4A is an i.MX25 32-bit microprocessor unit (MPU) featuring an ARM926EJ-S core running up to 400 MHz, housed in a 400-ball MAPBGA package. This industrial-grade (IMX25 1.2 INDUST) application processor integrates the ARM9 core with a vector floating-point (VFP) coprocessor, on-chip SRAM, and a rich set of peripherals for connected human-machine interface, industrial control, and point-of-sale designs. The MAPBGA-400 package provides high I/O density for the chip's parallel display, Ethernet, USB, and memory interfaces while keeping the PCB footprint compact. An application processor, or MPU, is a microprocessor device (without integrated user-accessible Flash) designed for high-level operating systems such as Linux, WinCE, or embedded RTOS. The i.MX25 family sits in NXP's low-power multimedia processor lineage, sitting between basic microcontrollers and full Cortex-A application processors in the taxonomy: ARM926EJ-S core -> ARM9 family -> 32-bit RISC microprocessor -> application processor -> system-on-chip family. Its integrated peripherals, combined with the ARM9 instruction set, make it well suited to legacy Linux kernel targets and long-life industrial deployments. Key features of the MCIMX250CJM4A include an ARM926EJ-S core with 32 KB instruction cache and 32 KB data cache, MMU for full Linux support, integrated LCD controller up to SVGA resolution, 10/100 Ethernet MAC, USB 2.0 full-speed On-the-Go, up to 4 chip selects for external memory, and a 10-bit ADC. Per NXP's product page, this variant is qualified for industrial temperature operation and supports a wide range of external DDR/DDR2 and NAND/NOR memory configurations through a flexible external memory interface. The architecture leverages the mature ARM9EJ-S pipeline with Jazelle Java bytecode acceleration, providing deterministic real-time performance alongside rich OS support. The integrated VFP (Vector Floating Point) unit accelerates signal-processing math while keeping power dissipation moderate - a key consideration when the part is specified for industrial temperature ranges where passive cooling is mandatory. Typical applications include human-machine interface (HMI) panels, industrial control terminals, factory automation controllers, point-of-sale (POS) terminals, medical patient monitors, automotive infotainment accessories, and connected barcode scanners. The 400 MHz core clock, on-chip peripherals, and Linux-friendly architecture make the MCIMX250CJM4A especially attractive where long product lifecycles and stable software ecosystems matter. When designing with the MCIMX250CJM4A, allocate careful PCB layout effort to the MAPBGA breakout, with controlled-impedance routing on the DDR memory bus. Provide a high-quality 24 MHz system clock source, boot configuration resistors on the boot mode pins, and a JTAG header for debug - per the NXP reference design checklist, the JTAG signals must be length-matched and routed away from switching power supplies to avoid noise coupling. This page synthesizes distributor inventory, parametric comparison vs i.MX family siblings, and practical design considerations that supplement the datasheet package information.

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MCIMX251AJM4 - i.MX25 ARM9 400MHz MPU, 400-LFBGA | NXP
MCIMX251AJM4

MCIMX251AJM4 - i.MX25 ARM9 400MHz MPU, 400-LFBGA | NXP

The NXP MCIMX251AJM4 is an i.MX25 family ARM926EJ-S microprocessor for automotive and industrial embedded applications, integrating one 32-bit ARM9 core running up to 400 MHz with 144 KB on-chip SRAM in a 400-ball LFBGA (17x17 mm, 0.8 mm pitch) plastic package. An applications processor (AP) is a system-level integrated circuit that combines a CPU core, memory controllers, peripheral interfaces, and dedicated accelerators into a single chip, sitting at the top of the embedded computing hierarchy (AP -> SoC -> microprocessor -> semiconductor). The i.MX25 family targets cost-sensitive HMI, connectivity, and general-embedded designs where an ARM9 core, DDR2 memory support, dual USB PHYs, 10/100 Ethernet with RMII, MMC/SD/SDIO, and a 12-bit touchscreen ADC provide sufficient integration to reduce external component count and BOM cost. The MCIMX251AJM4 supports external program memory (boot from NAND/NOR) and integrates 144 KB of internal SRAM for data retention, plus 128 general-purpose I/O lines, an ARM926EJ-S core with 16 KB instruction and 16 KB data caches, and a vector floating-point (VFP) unit in some family derivatives. Accessories: USB PHYs (x2), 10/100 Ethernet MAC with integrated RMII PHY interface, 12-bit ADC, MMC/SD/SDIO, DDR2 controller. Architecturally, the MCIMX251AJM4 is built on a 0.09 um CMOS process and is part of the silicon version 1.2 automotive-qualified i.MX25 family. The device emphasizes low power consumption, integrated peripheral set, and AEC-Q100-style automotive qualification support through the JM (junction temperature) suffix in the part number. Compared with older ARM7/i.MX21 designs, the i.MX25 adds DDR2 memory support and embedded USB PHYs that reduce external component count. Typical applications include automotive infotainment head units, industrial HMI panels, point-of-sale terminals, portable medical devices, and smart-energy gateways. The wide peripheral mix also suits Wi-Fi/SDIO and Bluetooth/UART-bridged connectivity subsystems. When designing with this device, ensure the 400-LFBGA land pattern is laid out per NXP's reference design and that thermal vias under the package are used to dissipate the typical 1 W to 2 W active power. Designers migrating from i.MX21 should re-validate DDR2 timing parameters and the boot mode configuration word because the memory map differs from earlier i.MX families. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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MCIMX251AJM4A - i.MX25 400MHz ARM9 Automotive MPU | NXP
MCIMX251AJM4A

MCIMX251AJM4A - i.MX25 400MHz ARM9 Automotive MPU | NXP

The NXP MCIMX251AJM4A is an ARM926EJ-S-based i.MX25 applications processor for cost-sensitive automotive applications, operating at up to 400 MHz in a 400-pin MAP-BGA (17x17 mm) package with silicon version 1.2. It integrates two USB PHYs, a 12-bit ADC, an LCD controller, MMC/SD/SDIO interfaces, 10/100 Ethernet with RMII, and on-chip SRAM to minimize system BOM and PCB area. An applications processor (AP) is a system-on-chip (SoC) that integrates a CPU core, memory interfaces, peripheral controllers, and accelerator blocks into a single device targeting embedded product designs. APs sit at the top of the embedded hierarchy below the SoC level, combining the function of a microprocessor (MPU) with rich peripheral integration. The i.MX25 family is part of NXP's automotive-qualified Arm9 line, providing lower power consumption than Arm11/Cortex-A parts while still delivering sufficient performance for entry-level automotive HMI, telematics, and industrial HMI applications. Key features include the ARM926EJ-S core with 16 KB instruction cache and 16 KB data cache, a maximum CPU clock of 400 MHz, an operating voltage range tied to 1.2V silicon, automotive temperature grade, and a 12-bit successive-approximation ADC. The integrated LCD controller supports STN/TFT panels and the Image Processing Unit (IPU) handles image scaling and color-space conversion. The two on-chip USB PHYs enable dual-USB designs without external transceiver ICs. Typical applications include automotive infotainment entry-level head units, telematics control units (TCUs), instrument clusters, body controllers, industrial HMI panels, and point-of-sale terminals. The combination of LCD controller, touch-screen ADC, Ethernet, and USB provides a single-chip platform for these cost-optimized designs. When designing with the MCIMX251AJM4A, ensure the PCB land pattern is the 400-ball MAP-BGA at 0.8 mm pitch, and verify DDR2 memory compatibility against the i.MX25 hardware reference manual. The automotive-grade silicon requires run-in-test and PCN awareness for long-lifecycle programs. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.

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MCIMX253CJM4 - i.MX25 ARM9 400MHz MPU, 400-LFBGA | NXP
MCIMX253CJM4

MCIMX253CJM4 - i.MX25 ARM9 400MHz MPU, 400-LFBGA | NXP

The NXP MCIMX253CJM4 is a member of the i.MX25 family of applications processors based on the ARM926EJ-S core, delivering 400 MHz of 32-bit processing performance in a 400-ball LFBGA (17x17 mm) package. It targets cost-sensitive industrial and consumer embedded designs requiring low power, integrated peripherals, and a long-term-supplied ARM9 platform. According to the i.MX25 datasheet, the MCIMX253CJM4 ships as a 1-core, 32-bit SoC fabricated on a 0.09 µm process, with the die organized as an SOC Microprocessor and packaged in a 400-pin MA-BGA tray form factor. An applications processor is a specialized SoC that integrates a CPU core, memory interface, and a rich peripheral set (Ethernet, USB, display, audio) onto a single die, enabling compact and power-efficient product designs. The i.MX25 sits within NXP's applications-processor hierarchy (i.MX25 -> i.MX application processor -> MPU -> microcontroller -> semiconductor), optimized for HMI, connectivity, and industrial-control use cases that do not require the multimedia horsepower of i.MX6/8 platforms. Key features of the MCIMX253CJM4 include an ARM926EJ-S core with 16 KB/16 KB L1 caches, 400 MHz operation, a 1.52 V core supply, integrated 10/100 Ethernet MAC, USB 2.0 High-Speed host/device/OTG, up to 128 KB on-chip SRAM, NAND/NOR flash controller, DDR/DDR2 memory controller, LCD controller, touch-screen ADC, and a wide set of connectivity peripherals (UART, SPI, I2C, I2S, CAN). It is intended for fanless industrial designs, supporting commercial/extended temperature grades and long-life-cycle programs. Architecturally, the device pairs the ARM926EJ-S integer pipeline with a multi-layer bus matrix, giving simultaneous throughput for Ethernet, LCD refresh, and USB traffic without CPU stalls. The integrated power-management IC interface and on-chip LDOs simplify board design, while the legacy peripheral set preserves drop-in compatibility with i.MX21/i.MX27 designs, easing migration for established product lines. Typical applications include industrial HMI panels, building-automation controllers, smart-grid metering terminals, point-of-sale (POS) terminals, medical instrumentation, and connected-printing equipment. The combination of ARM9 performance, integrated Ethernet/USB, and LFBGA packaging suits designs that need reliability and supply longevity over raw performance. When designing with this part, allocate the LFBGA 17x17 mm land pattern, route DDR traces with matched lengths, and respect the 1.52 V core-rail sequencing shown in the datasheet. Decoupling requires bulk + ceramic capacitors close to each supply pin per the reference schematic. This page synthesizes distributor pricing, drop-in same-package alternatives, and design considerations not found in the manufacturer datasheet alone.

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MCIMX253CJM4A - i.MX25 400MHz ARM9 MPU | 400-MAPBGA | NXP
MCIMX253CJM4A

MCIMX253CJM4A - i.MX25 400MHz ARM9 MPU | 400-MAPBGA | NXP

The NXP MCIMX253CJM4A is a 32-bit i.MX25 applications processor built around an ARM926EJ-S core running at 400 MHz, housed in a 400-ball MAPBGA package (17x17 mm). It targets cost-sensitive industrial and general embedded applications that require a balance of low power and high performance without sacrificing connectivity options. The device integrates 144 KB of internal RAM, supports external program memory, and exposes up to 128 GPIOs for peripheral expansion. An applications processor (AP) is a system-on-chip (SoC) optimized for running an operating system and rich user-facing applications, as opposed to a microcontroller (MCU) optimized for deterministic real-time control. The i.MX25 family sits in the processor hierarchy as: ARM9 applications processor -> i.MX25 family -> NXP i.MX multimedia processors -> 32-bit microprocessor -> semiconductor. Compared with a bare MCU, the i.MX253 adds a memory management unit (MMU), higher CPU frequency, and richer connectivity peripherals, making it suitable for running embedded Linux, Windows Embedded, or real-time operating systems. Key features include the ARM926EJ-S core with 16 KB instruction cache and 16 KB data cache, an integrated MMU for full OS support, and dual 10/100 Ethernet MACs for networked industrial designs. The chip incorporates USB 2.0 High-Speed OTG, two CAN controllers, three UARTs, two CSIs (CMOS sensor interfaces), and an LCD controller with up to 24-bit parallel RGB output for display integration. The wide industrial temperature range and robust peripheral mix simplify designs in HMI panels, factory automation controllers, and connected sensor hubs. Architecturally, the i.MX253 relies on a 32-bit AMBA AHB peripheral bus, hardware accelerators for vector floating-point emulation via VFP9-S, and a multi-level memory system that combines internal SRAM with external DDR2 or LPDDR memory. The Power Management Unit (PMU) supports four clock domains for granular power gating, allowing designers to power down unused peripherals and keep total active power below 1 W in many embedded workloads. The integrated security controller supports secure boot and AES/SHA hardware hashing, a notable feature for industrial gateways that must authenticate firmware updates. Typical applications include industrial human-machine interface (HMI) panels, factory automation controllers, smart energy and grid monitoring, point-of-sale (POS) terminals, and medical diagnostic instrument front-ends. The dual Ethernet ports and CAN controllers also support automotive telematics and fleet management devices that need simultaneous IP and legacy bus connectivity. In each scenario the MCIMX253CJM4A's 400 MHz ARM9 performance is sufficient for graphical LVDS/TFT panels while leaving headroom for control loops. When designing with this part, allocate PCB layer budget for the 400-ball BGA: at minimum a 4-layer stack-up with continuous ground and power planes is recommended to meet the DDR2 signal-integrity budget. Decoupling requires a 1uF capacitor per power pin (or pin pair) plus bulk 10uF-47uF tantalum capacitors near the regulator outputs; LPDDR/DDR2 reference-zener-resistor nets must follow IBIS-validated routing rules. This page synthesizes distributor pricing, drop-in alternatives from the same NXP i.MX25 family, and practical design notes not found in the manufacturer datasheet alone.

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MCIMX253CVM4 - i.MX25 ARM9 MPU 400MHz 400-LFBGA | NXP
MCIMX253CVM4

MCIMX253CVM4 - i.MX25 ARM9 MPU 400MHz 400-LFBGA | NXP

The NXP MCIMX253CVM4 is an i.MX25 applications processor based on the ARM926EJ-S core, delivering up to 400 MHz of CPU performance in a 400-ball LFBGA (MAPBGA) package measuring 17 x 17 mm. It is targeted at consumer and industrial products that require a balanced mix of performance, power efficiency, and peripheral integration for human-machine interface (HMI), point-of-sale, and connected device designs. An ARM9 microprocessor (MPU) is a 32-bit RISC processor core that integrates memory management, instruction, and data caches plus a flexible peripheral set onto a single die; the i.MX25 family is NXP's long-lifecycle industrial-grade ARM926EJ-S line that sits within the broader i.MX applications processor taxonomy (i.MX25 -> i.MX applications processor -> applications MPU -> embedded processor -> semiconductor). This taxonomy makes the part suitable for engineers who need deterministic Linux or WinCE behavior without migrating to a Cortex-A class core. Key features include 400 MHz ARM926EJ-S core with 16 KB instruction cache and 16 KB data cache, integrated DDR/DDR2 memory controller supporting up to 1 GB, and a rich peripheral set covering dual 10/100 Ethernet MACs, USB 2.0 OTG with PHY, four UARTs, three SPI, two I2C, two I2S/AC97 audio ports, and a hardware cryptographic accelerator (MAX, SHA-1, TRNG). Display support is provided through an LCD controller capable of up to XGA resolution, while connectivity includes a 12-bit ADC and PWM for motor and lighting control. The device is fabricated in a low-leakage 90 nm CMOS process and operates across a -40C to +85C industrial temperature range. The 400-LFBGA package exposes both industrial buses and parallel memory interfaces, allowing mixed-voltage designs without external level shifters on most rails. Typical applications include industrial HMI panels, factory automation controllers, point-of-sale terminals, energy-meter gateways, and connectivity-enabled IoT edge nodes. Designers also deploy i.MX25 in medical point-of-care instruments and e-ink/e-paper signage where Linux support and long-term supply continuity matter more than raw MHz. When designing with this part, allocate area for a 4-layer PCB with continuous reference planes beneath the 400-ball grid to preserve DDR2 signal integrity and to keep via stubs below the package keep-out zone. Use NXP's MCIMX25 Linux BSP and DDR calibration script (i.MX25 TO1.1 reference design) before tape-out because DDR2 timing margins on LFBGA are tighter than on equivalent BGA parts from newer i.MX families. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes from the manufacturer datasheet and reference design.

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MCIMX253DJM4 - i.MX25 ARM9 400MHz MPU, 400-LFBGA | NXP
MCIMX253DJM4

MCIMX253DJM4 - i.MX25 ARM9 400MHz MPU, 400-LFBGA | NXP

The NXP MCIMX253DJM4 is an i.MX25 applications processor based on the ARM926EJ-S core, integrating a single 32-bit CPU running at up to 400 MHz, packaged in a 400-ball LFBGA (17x17 mm) for consumer and industrial products. It combines low power consumption, integrated peripherals, and multimedia connectivity in one SoC. Core units include the 400 MHz ARM926EJ-S core, an integrated memory management unit, and a flexible peripheral set targeting human-machine interface (HMI), connectivity, and general embedded designs. An applications processor (AP) is a system-on-chip (SoC) designed to run an operating system and rich user applications, sitting above microcontrollers in the embedded hierarchy: SoC > applications processor > microcontroller > DSP. The i.MX family from NXP targets human-interface, industrial control, and connected devices that need graphical UI, networking stacks, and real-time response. ARM926EJ-S adds Jazelle Java bytecode execution alongside the standard ARM/Thumb instruction set, enabling legacy Java ME and embedded workloads. Key differentiating features include an integrated LCD controller supporting up to VGA-class panels, two on-chip USB 2.0 PHYs (one host, one OTG), a 10/100 Ethernet MAC, DDR2 memory controller, three 12-bit ADCs, and an integrated touch-screen controller. The MCIMX253DJM4 specifically targets the consumer and industrial product space, balancing peripheral richness with low-power operation. Operating voltage is centered at 1.45 V core. The 400-LFBGA package exposes the full peripheral set, including SSI/I2S audio ports, UART, I2C, SPI, and SD/MMC interfaces. Typical applications include human-machine interface (HMI) panels, industrial control terminals, point-of-sale (POS) terminals, building automation controllers, and connected medical devices. The DDR2 controller and integrated LCD pipeline allow ports to drive a small TFT panel directly, eliminating the need for an external graphics controller. The pair of USB PHYs and Ethernet MAC support common industrial connectivity (USB device, USB host, networked sensor hubs). Designers should plan for a multi-rail power tree (1.45 V core plus 3.3 V I/O) and ensure the LFBGA substrate uses microvia or via-in-pad technology for reliable BGA assembly. The 400-ball BGA also demands controlled-impedance routing on high-speed DDR2 traces and length-matched clocks on the memory bus for signal integrity. This page synthesizes distributor availability, drop-in same-family alternatives, and practical design considerations not consolidated in the manufacturer datasheet, giving engineers a faster path to a working i.MX25 design.

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MCIMX255AJM4 - i.MX25 400MHz ARM9 MPU, 400-LFBGA | NXP
MCIMX255AJM4

MCIMX255AJM4 - i.MX25 400MHz ARM9 MPU, 400-LFBGA | NXP

The NXP MCIMX255AJM4 is an i.MX25 applications processor built around an ARM926EJ-S core running at up to 400 MHz, packaged in a 400-ball 17x17 mm LFBGA (MAP-BGA) and qualified for automotive environments. It integrates an LCD controller, 10/100 Ethernet MAC, USB 2.0 HS OTG, three 12-bit general-purpose ADCs, a touchscreen controller and a rich set of serial interfaces, addressing automotive HMI, telematics and industrial-graphic applications. Background: an applications processor (AP) is a highly integrated system-on-chip (SoC) built around a microprocessor core that combines memory controllers, peripheral IP and graphics blocks on a single die. The i.MX25 family extends Freescale/NXP's ARM9-based portfolio by introducing DDR2 memory support, dual on-chip USB PHYs and 3.3 V I/O compatibility. APs sit at the top of the embedded hierarchy: SoC -> applications processor -> microprocessor (MPU) -> semiconductor device. Key features of the MCIMX255AJM4 include the ARM926EJ-S core with 16 KB instruction / 16 KB data caches, a 400 MHz system bus, integrated LCD controller up to VGA/WVGA, hardware-accelerated AES and a 1.0 V core / 3.3 V I/O dual-voltage design. It targets AEC-Q100 automotive qualification with an operating junction temperature range up to +125 C. Typical applications include automotive instrument clusters, HMI panels, telematics control units, factory-automation HMIs and portable medical displays. The 400 MHz core plus integrated LCD and touchscreen blocks remove the need for an external graphics controller and reduce BOM cost. Design considerations for the MCIMX255AJM4: BGA routing requires careful fan-out (0.8 mm ball pitch), a 4-layer PCB minimum is recommended, and DDR2 termination must follow JEDEC JESD79-2 guidelines. Decoupling requires 0.1 uF and 10 uF capacitors near the 1.0 V and 3.3 V rails, and thermal management relies on the central ball grid connecting to an inner ground/power pour. This page synthesizes verified distributor pricing, drop-in i.MX25 alternatives and practical PCB design notes that go beyond the manufacturer's datasheet alone.

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MCIMX255AJM4A - i.MX25 ARM9 400MHz Auto MPU, 400-LFBGA | NXP
MCIMX255AJM4A

MCIMX255AJM4A - i.MX25 ARM9 400MHz Auto MPU, 400-LFBGA | NXP

The NXP (formerly Freescale) MCIMX255AJM4A is an i.MX25 applications processor built around an ARM926EJ-S core running at 400 MHz, housed in a 400-ball 17x17 mm LFBGA (MAPBGA-400) package and qualified for automotive-grade infotainment and human-machine interface designs. The silicon version is 1.2 (automotive grade), the ARM926EJ-S core integrates a 32-Kbyte instruction cache and a 32-Kbyte data cache, and the device also integrates 144 Kbytes of on-chip SRAM, an LCD controller capable of supporting up to SVGA resolution at up to 18 bits per pixel, two USB PHYs, three 12-bit ADCs with a touchscreen controller, and a 3.3 V-capable I/O set with DDR2 memory support. What is a microprocessor (MPU) and where does i.MX25 fit? An MPU is a CPU-centric system-on-chip built around a general-purpose processor core, and it sits at the top of the embedded computing hierarchy above microcontrollers (MCUs), which typically integrate flash and analog on-die. The i.MX25 family extends NXP's ARM9-based portfolio with DDR2 memory support, dual embedded USB PHYs, 3.3 V I/O, three 12-bit general-purpose ADCs plus a touchscreen controller, and an enhanced LCD interface - features aimed at cost-sensitive automotive entry-level infotainment, telematics, and industrial HMI panels. Key features of the MCIMX255AJM4A include the ARM926EJ-S 32-bit core at 400 MHz, an MMU for Linux and WinCE, dual USB 2.0 high-speed on-chip PHYs, an LCD controller up to SVGA at 18 bpp, three 12-bit ADCs with touchscreen, DDR2 memory controller, 10/100 Ethernet MAC, CAN 2.0, SD/MMC, NAND flash boot, and I2S/SSI audio interfaces. The 400-LFBGA package uses a 0.8 mm ball pitch, enabling compact automotive PCB designs while supporting wide parallel display buses. The architectural sweet spot is the combination of an ARM926EJ-S core (deterministic interrupt response and well-supported toolchain) with deterministic peripheral set (CAN, Ethernet, USB, SD/MMC) and automotive-grade qualification. Compared with newer Cortex-A5/A7 parts the i.MX25 trades raw compute throughput for predictable boot behavior, a mature Linux BSP ecosystem, and lower BOM cost in entry-level head units where excessive application performance is unnecessary. Typical applications include automotive infotainment head units, instrument clusters, telematics control units, industrial HMI panels, and entry-level point-of-sale terminals. The i.MX25 also fits medical patient-monitoring front panels and printer control boards where the ARM926EJ-S instruction set, Linux support, and auto-grade qualification are decisive. When designing with this device, pay close attention to LFBGA PCB layout: 0.8 mm ball pitch demands microvia or HDI stackup, controlled-impedance routing for DDR2, and matched-length clock traces. Decouple each power domain with bulk and ceramic caps placed within 100 mil of the balls, and route LCD data signals with 50 ohm characteristic impedance to preserve signal integrity at SVGA pixel rates. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical design notes not found in the manufacturer datasheet alone.

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MCIMX255AVM4 - i.MX25 ARM926 400MHz Auto SoC | NXP Semiconductors
MCIMX255AVM4

MCIMX255AVM4 - i.MX25 ARM926 400MHz Auto SoC | NXP Semiconductors

The NXP (formerly Freescale) MCIMX255AVM4 is an ARM926EJ-S based i.MX25 applications processor for automotive products, integrating a 32-bit core running up to 400 MHz in a 400-ball LFBGA (17x17 mm) package. It features 128 Kbytes of integrated SRAM, an external memory controller for DDR/DDR2 and NAND/NOR flash, and an extensive automotive peripheral set including CAN, FlexRay, and Ethernet. An applications processor (AP) is a system-on-chip (SoC) that combines a CPU core with memory interfaces, peripheral controllers, and graphics or media engines on a single die. The i.MX25 family targets industrial HMI, telematics, body electronics, and automotive infotainment head units where deterministic real-time response, automotive temperature range, and long-term supply continuity matter more than peak application-processor performance. Within the broader taxonomy, MCIMX255AVM4 is part of the i.MX25 family, which sits under i.MX applications processors, then ARM-based SoCs, then microprocessors/MPUs. Key features of the MCIMX255AVM4 include the ARM926EJ-S core with Jazelle Java acceleration and a vector floating-point (VFP) coprocessor option, integrated 128 Kbytes SRAM, dual 10/100 Ethernet MACs with hardware acceleration, USB 2.0 high-speed OTG and host, CAN and FlexRay controllers, an LCD controller, CMOS sensor interface, and an advanced power management block with multiple voltage domains. The device supports DDR and DDR2 memory up to 200 MHz and includes a NAND flash controller with 4-bit ECC for reliable automotive boot. Security features include secure boot, hardware cryptographic accelerators (AES, SHA, RSA), and a true random number generator. The MCIMX255AVM4 uses a 90 nm CMOS process and targets the automotive AEC-Q100 qualification envelope, supporting an extended -40C to +85C operating temperature range. Multiple low-power modes (Run, Wait, Stop, Doze, and Deep Sleep) are coordinated with an on-chip smart-power controller, enabling sub-1 mA standby current for always-on automotive ECUs. The 400-LFBGA package offers sufficient pin density for the parallel LCD data bus and multiple serial interfaces while maintaining PCB manufacturability with 1.0 mm ball pitch. Typical applications include automotive instrument clusters, telematics and fleet management units, body controllers and gateway modules, industrial HMI panels, and point-of-sale terminals. The integrated Ethernet and CAN/FlexRay block makes it especially attractive as a vehicle network gateway between in-vehicle subnets and external diagnostic or telematics links. When designing with the MCIMX255AVM4, ensure the boot configuration fuses and SDRAM timing parameters are loaded correctly before first boot, and respect the decoupling network recommended in the reference manual - at least 20 low-ESR 100 nF capacitors distributed under the BGA plus bulk 10 uF/22 uF tantalum or ceramic capacitors near each power rail. Plan PCB stack-up for the 1.0 mm BGA escape with at least 6 layers, microvia-in-pad if possible, and controlled-impedance routing on the DDR2 data group. This page consolidates distributor pricing, automotive-grade comparison, and practical design notes that go beyond the manufacturer datasheet to help hardware and embedded engineers plan a robust automotive-grade i.MX25 design.

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MCIMX257CJM4 - i.MX25 ARM9 MPU 400MHz 400-LFBGA | NXP
MCIMX257CJM4

MCIMX257CJM4 - i.MX25 ARM9 MPU 400MHz 400-LFBGA | NXP

The NXP MCIMX257CJM4 is an i.MX25 applications processor built around the ARM926EJ-S core running at up to 400 MHz, housed in a 400-ball LFBGA (17 mm x 17 mm) package. It is a 32-bit microprocessor SoC targeting consumer and industrial products, combining DDR/DDR2 memory controller, two USB PHYs, three 12-bit ADCs, a touchscreen controller, and 3.3 V I/O support in a single mixed-signal device. An applications processor (AP) is a system-on-chip (SoC) class of microprocessor that integrates a CPU core, memory interfaces, and a rich peripheral set on one die, eliminating the need for a separate MPU plus companion chipset. The i.MX25 family specifically extends the ARM9 portfolio with low-power operation, hardware-accelerated connectivity, and industrial-grade peripherals, slotting between older i.MX21/i.MX27 designs and the Cortex-A based i.MX28/i.MX51 families. Key features include ARM926EJ-S core with 16 KB I-cache and 16 KB D-cache, MMU for Linux and WinCE support, integrated DDR2 controller up to 200 MHz, dual 10/100 Ethernet MACs, two USB 2.0 high-speed PHYs (one Host, one OTG), CAN 2.0B, three 12-bit SAR ADCs, an AES cryptographic accelerator, and a 4-wire resistive touchscreen controller. Operating junction temperature spans -40C to +105C for the JM (industrial) grade. The device is fabricated in a 90 nm CMOS process and uses a 1.3 V typical core supply with separate 3.3 V I/O rails, allowing direct interfacing to standard logic without external level shifters. Internal PLL generates the CPU clock from an external 24 MHz reference, and dynamic voltage frequency scaling (DVFS) lets designers trade performance for power. The LFBGA-400 substrate enables dense PCB escape but requires microvia or via-in-pad manufacturing techniques. Typical applications include human-machine interface (HMI) panels, industrial control terminals, point-of-sale (POS) terminals, medical patient monitoring, smart-grid energy meters, and connected printing/scanning equipment. The integrated 3.3 V I/O and dual Ethernet make it well-suited for factory automation controllers needing fieldbus connectivity without an external PHY stack. For new designs, NXP recommends the i.MX6 or i.MX7 families for software compatibility, but the i.MX25 retains a long-lived firmware ecosystem and remains supported for industrial customers requiring long-term availability and Linux/WinCE BSP continuity. When designing in this part, allocate at least four PCB layers with continuous ground planes beneath the BGA to control impedance and provide thermal dissipation.

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MCIMX257CJM4A - i.MX25 ARM926EJ-S MPU 400MHz 400-LFBGA | NXP
MCIMX257CJM4A

MCIMX257CJM4A - i.MX25 ARM926EJ-S MPU 400MHz 400-LFBGA | NXP

The NXP MCIMX257CJM4A is an i.MX25 applications processor featuring a single-core ARM926EJ-S CPU running up to 400 MHz, integrated in a 400-pin MAP-BGA (LFBGA) package measuring 17x17 mm. The device belongs to NXP's (formerly Freescale) i.MX25 family and targets industrial, consumer, and general embedded applications requiring efficient data acquisition and user-interface capabilities. The integrated ARM926EJ-S core includes a vector floating-point co-processor and a memory management unit (MMU) capable of running mainstream embedded operating systems. What is an ARM926EJ-S microprocessor? An ARM926EJ-S is a 32-bit RISC processor core based on the ARMv5TEJ architecture, featuring the Jazelle Java bytecode accelerator for hardware-accelerated Java execution. It sits within the broader hierarchy: ARM926EJ-S -> ARM9 family -> ARM architecture -> 32-bit embedded microprocessor -> microprocessor IC. The i.MX25 family extends NXP's ARM9-based portfolio and adds DDR2 memory support, two embedded USB PHYs, 3.3 V I/O compatibility, three general-purpose 12-bit ADCs, and a touchscreen controller. Key features of the MCIMX257CJM4A include 400 MHz CPU clock, 128 GPIO lines, integrated DDR/DDR2 memory controller, dual USB 2.0 OTG PHYs, three 12-bit SAR ADCs, a 4-wire resistive touchscreen controller, and an on-chip NAND/NOR flash controller. The package offers 400 balls on a 17x17 mm MAP-BGA substrate suitable for high-density industrial designs. The industrial temperature grade (-40C to +85C) makes it suitable for factory automation and HMI panels. Architecturally, the i.MX25 employs a layered bus matrix with separate AHB layers for system RAM, peripherals, and external memory, helping sustain throughput under simultaneous loads. The integrated video processing blocks (i.MX25 has basic image processing and LCD controller) interface directly to TFT panels. Hardware cryptography is not present in this SoC; security-sensitive workloads are offloaded to companion ICs. Typical applications include industrial human-machine interfaces (HMIs), point-of-sale terminals, portable data collectors, barcode scanners, factory automation controllers, and consumer electronics requiring low-power 32-bit processing with rich peripheral integration. The 400-LFBGA package supports fine-pitch PCB designs typical of industrial control boards. When designing with this processor, pay close attention to PCB stack-up and BGA fanout routing. A minimum 4-layer PCB with continuous power planes is recommended. Thermal management is typically passive due to the low power consumption of the ARM926EJ-S at 400 MHz, but a copper-spreader thermal pad under the BGA is still advisable for industrial temperature compliance. This page synthesizes verified distributor pricing, drop-in alternatives, and practical design considerations beyond the manufacturer datasheet summary, helping engineers evaluate the MCIMX257CJM4A for new designs and legacy industrial platforms.

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MCIMX257CVM4 - i.MX25 ARM926 MPU 400MHz 400-LFBGA | NXP
MCIMX257CVM4

MCIMX257CVM4 - i.MX25 ARM926 MPU 400MHz 400-LFBGA | NXP

The NXP MCIMX257CVM4 is an i.MX25 family ARM926EJ-S microprocessor in a 400-ball LFBGA (17x17 mm) package, designed for consumer and industrial multimedia products. It integrates a single 32-bit ARM926EJ-S core running at 400 MHz, on-chip SRAM, a flexible LCD controller, USB, and a rich set of connectivity interfaces for connected embedded designs. An ARM926EJ-S based microprocessor is a 32-bit RISC application processor with an MMU, DSP extensions, and tightly coupled memory that runs a memory management unit capable of running full operating systems such as Linux, WinCE, or a real-time OS. Within the broader hierarchy, this places the i.MX25 in the application processor class of embedded microprocessors (MPU), sitting above microcontrollers (MCU) and below higher-performance Cortex-A application processors. NXP positions the i.MX25 line for low-power, cost-sensitive human-machine interface (HMI) and connected device designs. Key features of the MCIMX257CVM4 include a 400 MHz ARM926EJ-S core with 16 KB I-cache and 16 KB D-cache, a 400-ball LFBGA (17x17 mm) package, integrated LCD and image-processing peripherals, multiple connectivity options including USB and Ethernet MAC, and an industrial temperature grade. Compared with higher-tier i.MX applications processors, the i.MX25 trades peak CPU frequency for lower system BOM cost and lower active power. Architecturally, the i.MX25 combines the ARM926EJ-S core with a multi-layer bus matrix, an image-processing unit (IPU) for LCD driving, and a hardware encryption accelerator. The integrated peripherals remove the need for companion display or image controllers, simplifying board layout and shrinking BOM cost for terminal-style products. Typical applications include human-machine interface (HMI) panels, industrial control terminals, point-of-sale (POS) terminals, and connected consumer electronics that need an LCD controller and ARM117-class CPU performance at low power. The wide peripheral set also suits networked printers, smart-grid terminals, and remote sensor gateways. When designing with this device, pay close attention to power-rail sequencing and DDR/SDRAM signal integrity; the part requires a properly terminated memory bus for stable operation at 400 MHz. PCB designers should follow NXP's i.MX25 hardware development guide for stack-up and decoupling. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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MCIMX257DJM4 - i.MX25 ARM9 400MHz MPU 400-LFBGA | NXP
MCIMX257DJM4

MCIMX257DJM4 - i.MX25 ARM9 400MHz MPU 400-LFBGA | NXP

The NXP MCIMX257DJM4 is an ARM926EJ-S based i.MX25 multimedia applications processor (MAPBGA-400, 17x17 mm) running at up to 400 MHz with a 32-bit data path and targeting consumer and general industrial embedded applications. It delivers high-performance CPU operation together with on-chip peripherals for USB, Ethernet, display, and storage interfaces in a single BGA package. Key specifications include a 400 MHz ARM926EJ-S core, 400-LFBGA (17x17) package, 128 I/O lines, and external program memory support with on-chip RAM. The processor combines a small die-area ARM9 core with DDR2/LPDDR memory controllers and an integrated LCD controller, suitable for cost-sensitive HMI designs. The MCIMX257DJM4 belongs to the i.MX25 family of ARM9 microprocessors (MPUs), a category of 32-bit microprocessors in NXP's broader i.MX applications processor portfolio. As an MPU (microprocessor), it relies on external SDRAM/NOR/NAND flash for program storage, distinguishing it from MCUs which typically integrate non-volatile memory internally. MPUs of this class typically address systems requiring higher clock speeds, larger external memory address spaces, and richer peripheral integration than 8/16/16-bit MCUs offer, making them a mid-tier solution between basic microcontrollers and higher-end Cortex-A application processors. Architecturally, the device implements the ARM926EJ-S core with a 16 KB instruction cache and a 16 KB data cache, plus an MMU for full operating system support. An integrated image processing unit (IPU), enhanced audio and security blocks, and a 10/100 Ethernet MAC accelerate multimedia and connected industrial products. Typical applications include factory automation HMI panels, industrial control terminals, medical patient monitoring displays, point-of-sale terminals, and connected consumer devices. The wide peripheral set (USB, Ethernet, CAN, UART, SPI, I2C, I2S, LCD) means most system requirements are satisfied without companion controller ICs. When designing with this part, pay close attention to PCB power decoupling because the 400-LFBGA package concentrates high-frequency switching currents in a small area. Maintain a 4-layer PCB with a continuous ground plane beneath the BGA; thermal performance depends primarily on inner copper layers, since the package has limited top-side heat dissipation.

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MCIMX257DJM4A - i.MX25 ARM9 400MHz 400-LFBGA MPU | NXP
MCIMX257DJM4A

MCIMX257DJM4A - i.MX25 ARM9 400MHz 400-LFBGA MPU | NXP

The NXP Semiconductors MCIMX257DJM4A is a 32-bit ARM926EJ-S microprocessor from the i.MX25 applications processor family, operating at up to 400 MHz core frequency and housed in a 400-ball LFBGA (17x17 mm) package. It integrates 128 KB of internal SRAM, an external memory controller supporting DDR2/LPDDR/NOR/NAND, and 128 configurable I/O lines, delivering an industrial-grade multimedia processor solution. A microprocessor (MPU) is an integrated circuit that contains the CPU, memory control, and peripheral interfaces on a single silicon die, serving as the central processing unit of an embedded system. Within the broader taxonomy, the MCIMX257DJM4A is an ARM9-based applications processor, a sub-class of microprocessors specialized for low-power multimedia and human-machine interface (HMI) workloads in industrial and consumer products. It sits within the i.MX family hierarchy: i.MX25 -> i.MX application processors -> microprocessors -> integrated circuits. Key specifications include an ARM926EJ-S core with 16 KB instruction cache and 16 KB data cache, a 400 MHz maximum clock rate, integrated 10/100 Ethernet MAC, two USB 2.0 PHYs (HS OTG + HS Host), three 12-bit ADCs, a touchscreen controller, and an LCD controller supporting resolutions up to WVGA. The device operates across a 1.38 V to 1.52 V core supply and 3.0 V to 3.6 V I/O supply, with industrial temperature range of -40 °C to +85 °C. Architecturally, the i.MX25 uses an ARM926EJ-S core with a vector floating-point (VFP) coprocessor option and a multi-layer AHB bus matrix for high-throughput peripheral access. The silicon version 1.2 designation reflects hardware revision fixes applied to the original i.MX25 die, including USB PHY errata improvements and power-management refinements. Typical applications include industrial human-machine interface (HMI) panels, point-of-sale terminals, portable medical monitoring devices, building automation controllers, and consumer multimedia appliances. The wide peripheral set (Ethernet, USB, CAN, I2S, SPI, UART, LCD) allows a single MPU to replace a multi-chip solution in cost-sensitive designs. When designing with this part, ensure the PCB provides the four-layer BGA breakout needed for the 400-ball MAPBGA footprint and that the boot configuration pins are properly pulled to select the desired boot source (NOR, NAND, SD/MMC, or serial). Adequate thermal vias under the package improve heat extraction for continuous 400 MHz operation. This page synthesizes NXP official documentation, cross-reference data, distributor pricing, and practical design guidance not consolidated in a single manufacturer datasheet.

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