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MC68332ACEH16 - 32-Bit 16MHz CPU32 MCU | NXP | Industrial
MC68332ACEH16

MC68332ACEH16 - 32-Bit 16MHz CPU32 MCU | NXP | Industrial

The NXP Semiconductors MC68332ACEH16 (Freescale/Motorola heritage) is a highly-integrated 32-bit microcontroller built around the CPU32 core, operating at 16 MHz from a 5V supply, with 2 KB of on-chip RAM in a ROMless configuration, packaged in a 132-pin PQFP (24.13 x 24.13 mm) surface-mount body. A 32-bit embedded microcontroller combines a processor core, memory, and multiple peripheral subsystems on a single silicon die, interfacing through a common intermodule bus (IMB). The M683xx family pioneered this modular architecture, allowing the same CPU to be paired with different peripheral sets. Microcontrollers of this class sit above 8-bit MCUs in the hierarchy, serving industrial control, automotive, and communication equipment that require 32-bit data manipulation with deterministic real-time behavior. Key features of the MC68332ACEH16 include the time processing unit (TPU), a co-processor dedicated to timing operations such as PWM generation, input capture, and period measurement with minimal CPU intervention. The queued serial module (QSM) provides both a queued serial peripheral interface (QSPI) and a serial communications interface (SCI). The system integration module (SIM) handles clock generation, external bus control, chip selects, and system protection functions. Being ROMless, the device executes code from external memory via its 32-bit external bus, giving designers full firmware flexibility. Architecturally, the CPU32 core is an upward-compatible evolution of the classic 68020-derived instruction set, optimized for embedded control with additional low-power STOP modes and table lookup/interpolate instructions. Its deterministic interrupt structure and IMB-based module coupling deliver predictable real-time latency, a critical property for motor control and timing-critical industrial systems. Typical applications include industrial automation controllers, automotive engine and body control legacy platforms, network communication equipment, and test instrumentation. The TPU makes the part particularly strong in multi-channel timing applications such as injector drive, stepper control, and encoder processing. Design consideration: because the part is ROMless and 5V-only, new designs must budget an external EPROM/flash and level-shifting for modern 3.3V peripherals. Note the 16 MHz grade vs the 25 MHz variant, as firmware timing loops differ. This page synthesizes distributor pricing, drop-in alternative analysis, and practical design notes not found in the manufacturer datasheet, with data verified as of 2026-10-18.

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MC68332ACEH25 - 32-Bit 25MHz CPU32 MCU, 132-PQFP | NXP
MC68332ACEH25

MC68332ACEH25 - 32-Bit 25MHz CPU32 MCU, 132-PQFP | NXP

The NXP (formerly Freescale) MC68332ACEH25 is a 32-bit modular microcontroller in the M68300 CPU32 family, integrating a 32-bit CPU32 core, System Integration Module (SIM), Time Processing Unit (TPU), and Queued Serial Module (QSM) on a common intermodule bus (IMB). The ACEH25 speed-grade variant runs the CPU32 core at 25 MHz, delivers 32-bit data manipulation, and is offered as a ROMless design in a 132-pin PQFP (24.13 x 24.13 mm) package rated for the automotive -40C to +85C operating range. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory, and programmable peripherals around an internal bus. The M68300 family is built from standardized modules - CPU32, SIM, TPU, QSM, and others - communicating through the IMB. This modular architecture let Freescale/NXP reuse verified IP blocks across automotive and industrial SKUs while letting customers add application-specific peripherals externally. Within the power-management and embedded hierarchy, the MC68332 sits as an automotive-grade 32-bit MCU family between 8/16-bit legacy controllers and the higher-performance ColdFire successors. Key features of the MC68332ACEH25 include the CPU32 core (true 32-bit internal architecture, 32-bit external data bus), 25 MHz system clock, 2 KB of on-chip SRAM, ROMless external-memory interface, 16-channel TPU for microsecond-accurate timing events, QSM with queued SPI and SCI/UART, and a 2 KB system integration RAM with chip-select logic. The SIM provides the external bus interface, DRAM/ROM/SRAM controllers, and system-protection features. The part is specified at 5 V supply and 25 MHz and is qualified to automotive-grade temperature and quality standards. Typical applications include automotive engine control units (ECU), anti-lock braking systems (ABS), industrial motion control, and aerospace/avionics subsystems. The TPU makes the device especially well-suited to event-driven timing tasks such as crank/cam tooth decoding, PWM generation, and stepper motor sequencing. Legacy industrial controllers using M68300 firmware can extend their lifecycle by continuing to source the ACEH25 speed grade. When designing with the MC68332ACEH25, route the 5 V analog and digital supplies separately and place bulk decoupling within 25 mm of the PQFP power pins; the 132-pin footprint requires thermal relief vias under the die-attach pad when used in high-cavity automotive enclosures. Firmware written for the CPU32 is forward-compatible with ColdFire V1 at the source level after recompilation.

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MC68332ACEH25 - 32-Bit 25MHz MCU CPU32 | NXP | 132-PQFP
MC68332ACEH25

MC68332ACEH25 - 32-Bit 25MHz MCU CPU32 | NXP | 132-PQFP

The NXP Semiconductors MC68332ACEH25 is a highly-integrated 32-bit ROMless microcontroller combining the CPU32 core at 25 MHz with a system integration module (SIM), a time processing unit (TPU), and a queued serial module (QSM), housed in a 132-pin PQFP (24.13 x 24.13 mm) package. A 32-bit modular microcontroller is a class of embedded processor built from independent functional blocks sharing a common intermodule bus (IMB). In the broader hierarchy, the MC68332 belongs to the Motorola-originated M683xx family of 68K-architecture microcontrollers, positioned above 8-bit and 16-bit MCUs in data-manipulation capability and below full application processors in complexity. Standardized modules allowed Motorola, later Freescale and now NXP, to rapidly derive application-tailored derivatives from the same die platform. Key features include the 32-bit CPU32 core clocked at 25 MHz, ROMless program memory operation requiring external FLASH or RAM, the TPU coprocessor providing 16 independent timing channels for complex event sequencing without CPU intervention, and the QSM combining a queued serial peripheral interface with a serial communications interface on shared pins. The IMB architecture decouples peripheral timing from CPU execution, so the TPU can generate PWM, capture, and motor-control timing waveforms with microsecond-level determinism while the CPU32 handles application logic. The SIM supplies system clock generation, external bus control, chip-select logic, and watchdog protection. According to the NXP MC68332 technical summary (MC68332TS), the modular design facilitates rapid development of devices tailored for specific applications. Typical applications include industrial automation controllers, automotive body and powertrain modules, thermal sensor data loggers with external FLASH and RAM, and motor-control systems that exploit the TPU's 16 timing channels. Designers must budget for external program memory since the part is ROMless, and must recalibrate clock-dependent firmware when substituting 16 MHz variants for 25 MHz parts. This page synthesizes distributor pricing context, EOL status, drop-in alternative analysis, and practical design notes not found in the manufacturer datasheet.

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MC68332ACFC16 - 32-Bit Modular MCU 16MHz ROMless 132-PQFP | NXP
MC68332ACFC16

MC68332ACFC16 - 32-Bit Modular MCU 16MHz ROMless 132-PQFP | NXP

The NXP MC68332ACFC16 is a 32-bit modular microcontroller built on the CPU32 core, operating at 16.78 MHz, housed in a 132-pin PQFP (Bumpered QFP, 24.13x24.13 mm) package. It integrates a CPU32 processor with powerful peripheral subsystems including a Time Processing Unit (TPU), Queued Serial Module (QSM), and a System Integration Module (SIM) that provides system protection, clock generation, and chip-select logic. The 'A' suffix denotes the standard 5V industrial temperature variant, and 'CFC16' encodes the 132-pin PQFP package and 16.78 MHz maximum operating frequency. A modular microcontroller is a class of highly integrated 32-bit microprocessor that combines a CPU core with reconfigurable peripheral modules on a common intermodule bus (IMB). Within the broader semiconductor hierarchy, the M68332 family sits between standalone microcontrollers and application-specific microcontrollers, positioned in industrial control and automotive powertrain segments where real-time deterministic interrupt response and on-chip peripheral integration reduce BOM cost and PCB complexity compared to multi-chip designs. Key features include 32-bit data path with 24-bit addressing, 2 KB of on-chip SRAM, ROMless external memory interface, 15 dedicated I/O lines plus multiplexed peripheral I/O, two serial interfaces via the QSM (one SCI for UART, one SPI), seven external interrupt sources, and the distinctive Time Processing Unit (TPU) which is a dedicated microcoded engine for complex timing I/O without CPU intervention. The chip is manufactured on a 0.8 micron HCMOS process and operates from a single 5V supply. The architecture centers on the CPU32 core, an evolution of the Motorola 68000 instruction set, executing M68000 instructions plus new table-lookup and interpolate commands tailored for DSP-style operations. The TPU handles complex timing tasks (PWM generation, period measurement, quadrature decode) autonomously, freeing the CPU for control loops and communication stacks. Three independent chip-select outputs and a watchdog timer are integrated in the SIM block. Typical applications include automotive engine and transmission control units, industrial automation controllers, robotic motion controllers, CAN node gateways via add-on CAN modules, and legacy avionics subsystems. The wide 5V operating range with industrial -40C to +85C temperature grading makes the MC68332ACFC16 particularly suited to harsh-environment designs. When designing with this device, ensure each VDD/VSS pair is decoupled with a 100 nF ceramic capacitor placed within 5 mm of the pin. The crystal oscillator circuit requires careful PCB layout to meet the 16.78 MHz jitter spec; refer to the manufacturer's hardware design notes for guard trace and ground island recommendations. This page synthesizes distributor pricing, drop-in pin-compatible M68332 family alternatives, and practical PCB layout guidance not found in the manufacturer datasheet alone, helping engineers source and qualify this classic 32-bit MCU for both new designs and long-lifecycle maintenance programs.

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MC68332ACFC20 - 32-Bit CPU32 MCU, 20MHz, 132-PQFP | NXP
MC68332ACFC20

MC68332ACFC20 - 32-Bit CPU32 MCU, 20MHz, 132-PQFP | NXP

The NXP MC68332ACFC20 is a highly-integrated 32-bit modular microcontroller in the M68300 (CPU32) family, built around a 32-bit CPU32 core running at 20 MHz and packaged in a 132-pin PQFP (24.13 x 24.13 mm). The part is part of the Freescale/NXP M68332 family, with the 'CFC' suffix denoting the 132-pin PQFP plastic package and '20' indicating the 20 MHz CPU clock. The device is described in the verified web data as a 'CPU32 M683xx Microcontroller IC 32-Bit 20MHz ROMless'. What is a CPU32 microcontroller? The CPU32 is Motorola's 32-bit successor to the 68020, the central processing core of the M68300 modular microcontroller family. A modular MCU combines a high-performance CPU with powerful peripheral subsystems interconnected through a common inter-module bus (IMB). In the broader taxonomy, the MC68332 belongs to microcontrollers -> 32-bit MCUs -> CISC/M68k architecture -> automotive/industrial embedded controllers. Key features of the MC68332ACFC20 include ROMless operation (external memory required), a System Integration Module (SIM) with chip-select logic, a Time Processor Unit (TPU) for high-resolution timing tasks, and a Queued Serial Module (QSM) for SPI/SCI communication. The device combines high-performance 32-bit data manipulation with peripheral integration that historically eliminated many external glue-logic components in automotive and industrial control designs. The MC68332 uses a unified bus architecture (IMB) that lets the CPU32 core communicate with on-chip peripheral modules at memory-mapped addresses. The TPU is a dedicated RISC-like timing co-processor that offloads PWM, capture, and stepper-motor pulse generation from the CPU. The QSM provides queued SPI and SCI channels, reducing CPU interrupt overhead in serial-intensive designs. Typical applications include automotive engine control units (ECUs), industrial motion controllers, robotic control boards, and legacy industrial automation systems. The wide operating voltage and integrated peripherals historically made the part a workhorse for 1990s-era automotive powertrain and chassis designs. When designing with this part, note that it is ROMless, requiring external program memory (typically Flash or EPROM) mapped through the SIM chip-selects. Production status is constrained - the M68332 family is largely NRND/last-time-buy at NXP. Plan for migration to modern Kinetis or S32K families for new designs.

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MC68332ACFC25 - 32-Bit 25MHz CPU32 MCU ROMless 132-PQFP | NXP
MC68332ACFC25

MC68332ACFC25 - 32-Bit 25MHz CPU32 MCU ROMless 132-PQFP | NXP

The NXP MC68332ACFC25 is a 32-bit modular microcontroller built around the CPU32 core, operating at 25 MHz and packaged in a 132-pin PQFP (24.13x24.13 mm). It integrates a System Integration Module (SIM), a Time Processing Unit (TPU) for autonomous timing, and a Queued Serial Module (QSM) for serial communication, with 2 KB of integrated RAM and no on-chip program ROM. A microcontroller (MCU) is a single-chip computer that combines a CPU, memory, and programmable peripherals. The 68332 family is a highly-integrated 32-bit MCU that combines high-performance data manipulation capabilities with powerful peripheral subsystems. The 68332 sits within the broader M68300 (CPU32) microcontroller family, which itself belongs to the Coldfire/M68K lineage of processors used widely in industrial automation and automotive control. Key features include a 25 MHz CPU32 core delivering 4 MIPS of sustained performance, an intelligent TPU that offloads timing events from the CPU, a QSM that handles SPI/UART serial protocols, and a 16-bit-wide intermodule bus (IMB) interconnecting internal peripherals. The device supports external address/data bus operation for code and data ROM expansion. The architecture is based on a 32-bit internal register model with a 16-bit external data bus and 24-bit address bus for memory expansion. Built-in emulation support, a background debug mode (BDM), and JTAG boundary scan simplify development and field diagnostics. The 132-pin PQFP package exposes the full external bus, the TPU channel I/O, and QSM signals, making it suitable for embedded industrial designs. Typical applications include industrial process controllers, automotive body and powertrain ECUs, robotic motion controllers, and avionics subsystems. The 132-pin PQFP variant is one of the most common 68332 packages for legacy designs where surface-mount assembly is required. Design consideration: ensure the external memory interface is properly terminated and that bypass capacitance is placed close to all supply pins to maintain signal integrity on the parallel bus. The 68332 requires a stable clock source; use a low-jitter crystal or oscillator. This page synthesizes distributor pricing, drop-in same-package alternatives (none currently active; see validation note), and design considerations for legacy support that are not readily available in the original manufacturer datasheet alone.

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MC68332AMEH16 - 16MHz 32-Bit ROMless MCU | NXP | Industrial
MC68332AMEH16

MC68332AMEH16 - 16MHz 32-Bit ROMless MCU | NXP | Industrial

The NXP Semiconductors MC68332AMEH16 is a 32-bit ROMless microcontroller operating at 16 MHz, with 2 KB RAM, CPU32 processing, TPU and QSM peripherals, and a 132-pin PQFP package measuring 24.13 mm by 24.13 mm. The device is identified by distributor listings as an automotive-temperature-grade part in a square gull-wing BQFP package. A microcontroller is a programmable semiconductor that combines a processor core, memory interfaces, communication peripherals, timers, and system-control functions on one integrated circuit. The MC68332 belongs to the CPU32-based MC683xx family and uses modular subsystems connected through an intermodule bus. This architecture makes it a 32-bit embedded controller for legacy industrial, automotive, communications, and real-time control systems rather than a general-purpose application processor. The supplied manufacturer and distributor data confirms a 16 MHz operating frequency, ROMless configuration, 2 KB RAM, TPU, QSM, 32-bit CPU, 132-pin PQFP package, square gull-wing terminal form, surface mounting, and automotive temperature grade. NXP describes a highly integrated design with a CPU32 core, System Integration Module, Time Processing Unit, Queued Serial Module, and other peripheral subsystems. Detailed electrical limits, flash requirements, voltage range, timer architecture, and communication modes remain datasheet-dependent. Because the MCU is ROMless, executable software must be supplied through external program memory or another system-specific boot arrangement; the 2 KB internal RAM is suitable for limited working storage. The 16 MHz clock and modular peripheral set support deterministic embedded control, while the 132-pin package exposes substantially more I/O than small mixed-signal MCUs. Existing hardware should be checked against the exact NXP datasheet before layout reuse or firmware migration. Typical application directions include legacy automotive modules, industrial controllers, communications equipment, and real-time embedded systems that require the CPU32 architecture and established MC68332 software support. New designs should confirm toolchain availability, external-memory requirements, electrical characteristics, lifecycle status, and any documented end-of-life or shipping-discontinuance notices before committing to a production release. The most important design consideration is lifecycle risk: the verified NXP result explicitly labels this part as End of Life. For new production, engineers should evaluate an NXP-recommended migration family and confirm software, timing, package, pin, and peripheral compatibility rather than assuming that a nominally similar microcontroller is drop-in replaceable. This page consolidates distributor availability, package data, lifecycle information, and replacement guidance without inventing missing electrical specifications.

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MC68332AVEH16 - 32-Bit 16MHz CPU32 MCU 2K RAM TPU QSM | NXP
MC68332AVEH16

MC68332AVEH16 - 32-Bit 16MHz CPU32 MCU 2K RAM TPU QSM | NXP

The NXP MC68332AVEH16 is a 32-bit microcontroller from the M683xx family featuring a CPU32 core running at 16 MHz, packaged in a 132-pin PQFP (24.13 x 24.13 mm). It integrates 2 KB of on-chip RAM and a Time Processing Unit (TPU) along with a Queued Serial Module (QSM), delivering high-performance data manipulation with powerful peripheral subsystems. Operating from a 5 V supply in a ROMless configuration, the device is targeted at industrial control and automotive legacy platforms. A microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory, and peripheral interfaces. The MC68332AVEH16 belongs to the Freescale/NXP M683xx (CPU32) family, which descends from the Motorola 68000 architecture and is part of the broader category of embedded 32-bit microcontrollers used in deterministic real-time control. Within the system hierarchy, it sits between 8/16-bit MCUs (e.g., HC08, HC11) and modern ColdFire/ARM Cortex-M devices, offering a stable software base for legacy designs. Key features include a CPU32 core with 32-bit internal architecture, 16 MHz system clock, 2 KB of on-chip SRAM, ROMless external memory interface, an intelligent Time Processing Unit (TPU) for offloading timing-critical tasks, a Queued Serial Module (QSM) that integrates QSPI and SCI channels, and a 16-channel System Module including a 16-bit timer counter. The 132-pin PQFP package provides ample I/O and is compatible with standard surface-mount manufacturing. Architecturally, the device is built from standard modules interconnected through a common inter-module bus (IMB). Standardization around the IMB allows the same peripheral IP to be reused across the M683xx family, simplifying firmware portability. The ROMless design enables external program memory up to the full 32-bit address space, supporting large embedded applications. Typical applications include industrial automation and process control, automotive body and chassis ECUs (legacy), robotics motor control using the TPU, and avionics or military systems that depend on the mature CPU32 toolchain. The 5 V supply and PQFP package also make it well suited to legacy board designs where drop-in compatibility matters. When designing with this MCU, ensure that the external memory interface timing matches the 16 MHz bus speed and that the TPU microcode is sized for the application's timing channels. Developers should also confirm that modern toolchain support (compiler, debugger, RTOS) is available for the CPU32 architecture before committing to new designs. This page consolidates distributor pricing, drop-in alternatives in the same PQFP-132 footprint, and practical engineering notes that are not always found in the original manufacturer datasheet.

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MC68332GCAG25 - 32-Bit CPU32 MCU 25MHz TPU QSM | NXP
MC68332GCAG25

MC68332GCAG25 - 32-Bit CPU32 MCU 25MHz TPU QSM | NXP

The NXP MC68332GCAG25 is a 32-bit highly-integrated modular microcontroller built on the CPU32 core, running at 25 MHz and housed in a 144-pin LQFP package measuring 20x20 mm. It combines a 32-bit CPU, System Integration Module (SIM), Time Processing Unit (TPU), Queued Serial Module (QSM), and 2KB of on-chip RAM into a single chip connected through a common intermodule bus (IMB). The part is part of the legacy M68300 family and uses a ROMless architecture, requiring external program memory. A microcontroller (MCU) is an integrated circuit that combines a processor core, volatile memory, non-volatile memory, and peripheral functions on a single chip. The M68300 family is a high-performance 32-bit automotive and industrial microcontroller family built on the Freescale/NXP CPU32 architecture, which evolved into the ColdFire v1 family. The TPU co-processor offloads time-critical tasks from the CPU, enabling precise timing in automotive and industrial control applications with minimal CPU overhead. Key features of the MC68332GCAG25 include CPU32 core, 25 MHz clock frequency, 32-bit data bus, 2KB on-chip RAM, dedicated TPU co-processor, QSM with SPI/UART support, and System Integration Module for chip-select and interrupt management. According to the NXP product page, the part carries industrial temperature grade qualification and is supplied in a surface-mount gull-wing LQFP-144 package. The MC68332 architecture is built from standard M68300 modules that interface through a common intermodule bus (IMB), allowing customers to reuse the same peripheral modules across the family. The 25 MHz CPU32 core delivers up to 11 MIPS typical performance at 4.5V, while the standalone TPU can execute complex timing sequences in parallel with the CPU. The device targets industrial automation, motor control, and automotive body/chassis applications. Typical applications for the MC68332GCAG25 include automotive engine control units (ECUs), automotive body controllers, industrial PLCs, motor control inverter platforms, and machine-to-machine (M2M) communication gateways. The TPU-driven I/O makes it well-suited for PWM generation, encoder decoding, and stepper-motor sequencing. The ROMless variant allows customers to use a wide range of external program memories including flash and EPROM. When designing with this MCU, allocate external program memory and external RAM for code execution, since only 2KB internal RAM is provided. The TPU microcode patterns are firmware-configurable through external memory; therefore ROMless MC68332 parts require the customer to supply full TPU microcode. Pin-compatible follow-on parts include the MC68332GVAG25 (different temperature/voltage grade) and MC68332ACAG25 variant. This page synthesizes NXP product page data, distributor pricing (DigiKey, Mouser, LCSC), and the M68300 cross-reference landscape not found in the standalone datasheet title page.

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MC68332GCEH16 - 32-Bit CPU32 MCU 16MHz ROMless 132-PQFP | NXP
MC68332GCEH16

MC68332GCEH16 - 32-Bit CPU32 MCU 16MHz ROMless 132-PQFP | NXP

The NXP MC68332GCEH16 is a 32-bit highly-integrated modular microcontroller in the M683xx (CPU32) family that combines high-performance data manipulation with powerful peripheral subsystems, operating at 16 MHz and packaged in a 132-pin PQFP (24.13 x 24.13 mm). A 32-bit microcontroller (MCU) is a microprocessor core with on-chip RAM, ROM/Flash, timers, and communication peripherals integrated on a single die. The MC68332 specifically uses the CPU32 core, an evolution of the Motorola 68000 family, optimized for embedded control. It sits within the broader hierarchy: CPU32 -> M683xx family -> 32-bit MCU -> microcontroller -> embedded processor -> semiconductor. The part is ROMless, requiring external program memory, which gives designers freedom to select boot code and firmware tailored to the application. Key features include the CPU32 core at 16 MHz, 2 KB of on-chip RAM, a Time Processing Unit (TPU) for high-resolution timing I/O, a Queued Serial Module (QSM) for queued SPI/UART transactions, and a System Integration Module (SIM) that aggregates chip selects, interrupt control, and bus arbitration. The internal intermodule bus (IMB) connects these standard modules, allowing configuration flexibility. Operating temperature spans -40C to +85C for industrial environments. The architecture uses modular standard cells interconnected through the intermodule bus (IMB), a hallmark of the M683xx design philosophy. By decoupling peripherals from the core, NXP enables software reuse across family members. The TPU executes microcoded timing algorithms autonomously, offloading the CPU from event timing workloads such as ignition control, motor commutation, and pulse-width measurement. External bus width and wait-state insertion are SIM-controlled, supporting slow program-memory devices. Typical applications include automotive engine and transmission control, industrial automation controllers, robotic motion controllers, medical instrumentation with deterministic timing needs, and legacy embedded systems originally designed around the Motorola 68000 architecture. The TPU is especially valuable for fuel injection, anti-lock braking, and electronic stability control subsystems. When designing with this part, ensure proper decoupling near the 5V supply pins, allocate an external program-memory device, and respect the ROMless boot configuration. Migration paths should be evaluated against the MC68332 family variants, since the part is mature and approaching end-of-life per the manufacturer product page. This page synthesizes distributor pricing, drop-in NXP M68332 family alternatives, application context, and design notes that extend beyond the manufacturer datasheet to support procurement and engineering decisions.

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MC68332GCEH25 - 32-Bit 25MHz CPU32 MCU | NXP | Automotive
MC68332GCEH25

MC68332GCEH25 - 32-Bit 25MHz CPU32 MCU | NXP | Automotive

The NXP (Freescale) MC68332GCEH25 is a ROMless 32-bit microcontroller IC built on the CPU32 core, operating at 25 MHz from a 5V supply, housed in a 132-pin PQFP (24.13 x 24.13 mm) package. It integrates a system integration module (SIM), a time processing unit (TPU) with 16 intelligent channels, and a queued serial module (QSM), with 2 KB of on-chip SRAM and external memory expansion for program code. A 32-bit microcontroller is a complete computing system on a single chip, combining a processor core, memory, and peripherals. Within the power-management and embedded-control hierarchy, the MC68332 belongs to the Motorola 68000 family lineage (M68300 series), positioned above 8-bit and 16-bit MCUs for applications needing high-performance data manipulation alongside deterministic timing control. Key features include the 25 MHz CPU32 core executing 68020-like instructions, the TPU for time-critical tasks (PWM, engine timing, quadrature decode) offloaded from the CPU, the QSM providing a queued serial peripheral interface (QSPI) and SCI UART, and the intermodule bus (IMB) that ties standard modules together. The ROMless (G suffix) architecture requires external EPROM/FLASH, offering full code flexibility for development and low-volume production. Architecturally, the device is assembled from independent modules communicating over the IMB, a modular approach that let Freescale scale the M683xx family. The 5V automotive-qualified construction and industrial temperature support made it a mainstay in engine control, transmission controllers, and industrial automation through the 1990s and 2000s. Typical applications include automotive engine and transmission control units, industrial motor drives, factory automation controllers, and legacy aerospace/military systems that standardize on the 68332 platform. Design consideration: because this part is ROMless, budget external memory bus timing carefully at 25 MHz; if a slower 16 MHz device is substituted, system clock and TPU configurations must be revalidated. Note that NXP has declared this part End of Life. This page adds value beyond the datasheet by consolidating EOL status, drop-in replacement candidates, distributor sourcing links, and practical migration guidance not found in the manufacturer documentation.

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MC68332GCPV16 - 32-Bit CPU32 MCU, 16MHz, 144-LQFP | NXP
MC68332GCPV16

MC68332GCPV16 - 32-Bit CPU32 MCU, 16MHz, 144-LQFP | NXP

The NXP (formerly Motorola/Freescale) MC68332GCPV16 is a 32-bit modular microcontroller from the M68300 ColdFire CPU32 family, integrating a high-performance CPU32 core with powerful peripheral subsystems and operating at 16 MHz from a 5 V supply in a 144-pin LQFP (20 x 20 mm) package. It combines a 32-bit RISC-style data manipulation engine with 2 KB of integrated RAM, ROMless program memory, and 15 user I/O lines, all interconnected via a common intermodule bus (IMB). What is a 32-bit modular microcontroller? A 32-bit microcontroller (MCU) is a single-chip computer whose data path, registers, and arithmetic logic unit are 32 bits wide, enabling it to handle larger integer values, address wider memory spaces, and process instructions more efficiently than 8-bit or 16-bit MCUs. The "modular" designation refers to the architectural pattern in which standardized functional blocks (timers, serial subsystems, A/D converters) are connected through an internal bus, allowing designers to mix and match peripherals. In the system hierarchy, the MC68332GCPV16 sits as MCU -> 32-bit MCU -> microcontroller -> embedded processor -> semiconductor. It is a legacy industrial/automotive-class component, not a modern Cortex-M device. Key features include the CPU32 core (object-code compatible with the MC68000 and offering additional instructions), an integrated Time Processing Unit (TPU) for sophisticated timing without CPU intervention, a queued serial module (QSM) for SPI and SCI communications, and a System Integration Module (SIM) that consolidates chip-select, interrupt, bus, and clock logic. The operating temperature range is -40 C to +85 C (industrial grade), making it suitable for harsh environments. The MC68332GCPV16 targets embedded control applications that require deterministic real-time behavior. Its ROMless architecture means external program memory (EPROM/Flash) must be connected, allowing designers to use the latest non-volatile memory technology or to perform in-field firmware updates through external bootloader circuits. The 144-LQFP package provides ample I/O for parallel bus expansion. Typical applications include automotive body and powertrain controllers, industrial automation and PLC modules, robotics motor controllers, medical instrumentation, and avionics subsystems. The part has long-term availability in legacy industrial programs but is generally considered mature/legacy, with NXP recommending migration to the MCX A series for new designs. When designing with this part, careful attention must be paid to the 5 V supply decoupling, the external bus timing (since program memory is external), and the TPU programming model, which differs significantly from a simple timer/counter. According to NXP, there is no pin-compatible/software-compatible active replacement; new designs should consider the MCX A series microcontrollers. This page synthesizes distributor pricing, drop-in alternative analysis, and practical design notes not found in the manufacturer datasheet alone.

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MC68332GVAG25 - 25MHz CPU32 MCU 2KRAM TPU QSM | NXP
MC68332GVAG25

MC68332GVAG25 - 25MHz CPU32 MCU 2KRAM TPU QSM | NXP

The NXP MC68332GVAG25 is a 32-bit CPU32 M683xx microcontroller IC running at 25 MHz with ROMless design and 2K of internal RAM, housed in a 144-pin LQFP (20x20 mm) package. It integrates the powerful CPU32 core with a Timer Processing Unit (TPU), Queued Serial Module (QSM), and 16-bit data bus architecture. The 'G' speed-grade designation specifies a 25 MHz system clock while 'V' indicates the 144-LQFP package family, and 'A25' confirms the 25 MHz maximum operating frequency at standard industrial temperature ranges. A microcontroller (MCU) is a single-chip computer containing a processor core, memory, and programmable input/output peripherals integrated on one integrated circuit. The M683xx family belongs to the broader category of 32-bit embedded microcontrollers, descendants of the Motorola 68000 architecture that evolved into the Freescale (now NXP) ColdFire and Power Architecture lines. Within the embedded hierarchy, MCUs sit above digital signal processors in compute capability but below microprocessors in raw performance, optimized for real-time deterministic control tasks where reliability and interrupt latency dominate over throughput. Key features include the dedicated Timer Processing Unit that offloads complex timing operations from the CPU, the Queued Serial Module providing SPI and SCI/UART serial communication, two Kbytes of dual-ported system RAM for shared CPU/peripheral access, and the CPU32 instruction set extending the 68000 with enhanced addressing modes. The intermodule bus (IMB) connects these blocks at high bandwidth, enabling deterministic peripheral-to-CPU data transfers without external glue logic. The MC68332 architecture uses a 32-bit internal architecture with 16-bit external data bus and 24-bit external address bus, supporting up to 16 Mbytes of linear address space. Operating voltage spans 4.5V to 5.5V with 31 I/O ports and JTAG/BDM background-debug interface. The device is widely used in automotive engine control, industrial automation, and avionics applications where the TPU's hardware timing channels simplify PWM generation and input capture tasks. Typical applications include automotive engine management, industrial servo control, robotics motion controllers, and embedded networking equipment. Its TPU excels at generating complex PWM waveforms and decoding quadrature encoder signals without burdening the main CPU. When designing with this part, consider the 5V supply requirement, ensure external memory is correctly mapped into the linear address space, and use the BDM port for non-intrusive firmware development. The ROMless configuration requires external boot memory, typically a parallel EPROM/Flash connected through the IMB. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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MC68332GVAG25557 - 32-bit CPU32 MCU 25MHz LQFP-144 | NXP
MC68332GVAG25557

MC68332GVAG25557 - 32-bit CPU32 MCU 25MHz LQFP-144 | NXP

The NXP (Freescale/Motorola) MC68332GVAG25557 is a 32-bit CPU32 modular microcontroller operating at 25 MHz, housed in a 144-terminal LQFP (20x20 mm) square fine-pitch package. This ROMless member of the MC68332 family integrates 2 KB of internal static RAM, a Time Processor Unit (TPU), and a Queued Serial Module (QSM), and runs from a 4.5 V to 5.5 V single supply. A 32-bit microcontroller such as the MC68332 combines a processor core with memory, timers, and serial peripherals on one die, sitting at the top of the microcontroller hierarchy (semiconductor -> integrated circuit -> microcontroller -> 32-bit MCU). The MC68332 family is based on the CPU32 core, an instruction-set derivative of the classic MC68000 16/32-bit architecture, so existing 68000 assembly and C code can be recompiled with minimal changes. Key features include the ROMless program-memory configuration, which requires external FLASH or EPROM connected via the 24-bit address bus and 16-bit external data bus; approximately 31 general-purpose I/O lines; the intelligent TPU coprocessor that offloads complex timing tasks such as PWM, input capture, and step-motor control from the CPU; and the QSM, which provides a queued SCI serial port plus a QSPI interface. The device is fabricated in HCMOS process technology for low power with TTL-compatible I/O. Typical applications include industrial automation controllers, automotive ECU prototyping, motor-control and motion-timing systems leveraging the TPU, thermal sensor data loggers, and legacy test equipment. The external-memory architecture makes it especially suited to designs needing large code images or field-updatable firmware. Design consideration: because the part is ROMless and clocks at 25 MHz, PCB layout must keep external memory traces short and matched, and the 5 V supply requires level-shifting when interfacing with modern 3.3 V peripherals. This page synthesizes distributor sourcing data, drop-in same-family alternatives, and NXP community replacement guidance not consolidated in any single datasheet. Note: this suffix (,557) device is a Rochester Electronics-sourced legacy supply item for the discontinued Freescale MC68332 line; stock is allocated through authorized-legacy channels.

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MC68332GVEH25 - CPU32 25MHz MCU, 2K RAM, TPU, QSM | NXP
MC68332GVEH25

MC68332GVEH25 - CPU32 25MHz MCU, 2K RAM, TPU, QSM | NXP

The NXP MC68332GVEH25 is a 32-bit CPU32 microcontroller from the M68300 ColdFire/M683xx family operating at 25 MHz with 2 KB of on-chip RAM and no internal ROM (ROMless), housed in a 132-pin PQFP (S-PQFP-G132) package. It integrates a powerful CPU32 core with on-chip peripheral subsystems including a Time Processing Unit (TPU), Queued Serial Module (QSM), and a 2 KB SRAM, plus a 24-bit address bus with 16-bit external data bus. The device is designed for high-reliability, low-power HCMOS operation from a 5 V supply. What is a microcontroller? A microcontroller (MCU) is a single-chip computer containing a CPU core, memory (RAM/ROM), and programmable peripherals. The MC68332GVEH25 belongs to the hypernym hierarchy MCU -> microprocessor -> semiconductor. The CPU32 core executes the M68000 instruction set with 32-bit internal registers, while the modular architecture interfaces through an Intermodule Bus (IMB), giving designers flexibility to scale peripherals without changing the CPU. Key features include 32-bit single-core performance at 25 MHz, hardware multiply/divide, dedicated Time Processing Unit for timing-critical I/O, QSM for queued serial communications (SPI and SCI/UART), and ROMless design that lets engineers map external flash to optimize program storage for their use case. The PQFP-132 package provides a 0.635 mm terminal pitch and a 24.13 × 24.13 mm footprint suited for industrial surface-mount assembly. The architecture combines a CPU32 core with analog and digital peripheral subsystems interconnected through the IMB. The Time Processing Unit (TPU) offloads timing functions from the CPU, handling pulse-width modulation, input capture, and stepper-motor control autonomously. This dual capability - control-oriented peripherals plus a 32-bit RISC-style core - makes the MC68332GVEH25 a workhorse for automotive, industrial, and robotic control systems. Typical applications include automotive body and powertrain controllers, industrial automation and PLC systems, robotic motion controllers, and avionics subsystems where the TPU's deterministic timing is critical. The 5 V supply and wide operating range suit vehicle and factory-floor environments. When designing with this part, account for the ROMless architecture: external program storage (typically 16-512 KB of EPROM/flash) must be connected to the external data bus, and wait-state generation may be required for slower memories. Designers must also evaluate the migration path to active MCUs (e.g., NXP's MCX A series) since the MC68332 family is no longer in active production. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.

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MC68332GVFC25 - 32-Bit CPU32 MCU 25MHz | NXP | Industrial Control
MC68332GVFC25

MC68332GVFC25 - 32-Bit CPU32 MCU 25MHz | NXP | Industrial Control

The NXP Semiconductors MC68332GVFC25 is a 32-bit CPU32 modular microcontroller rated at 25 MHz, ROMless with 2 KB of internal SRAM, integrated Time Processor Unit (TPU) and Queued Serial Module (QSM), housed in a 132-pin square BQFP/PQFP package (24.13 x 24.13 mm) with gull-wing leads for industrial temperature applications. A modular microcontroller is a family of processors assembled from reusable on-chip modules around a common core. The MC68332 family, originally developed by Motorola and later Freescale (now NXP Semiconductors), is a classic example: the CPU32 core is surrounded by independent modules for timing, serial communication, and system integration, all connected through an intermodule bus. This architecture places the device in the broader hierarchy of embedded processors: microcontroller, then 32-bit MCU, then embedded controller within a power-management and control subsystem. Key features include the high-performance CPU32 core executing the M68000 instruction set with additional low-power instructions, a 25 MHz operating frequency for real-time control, 2 KB of fast internal SRAM for critical routines and stacks, and a ROMless memory configuration that requires external program memory - ideal for prototyping and systems needing field-updatable firmware. The most distinctive feature is the Time Processor Unit (TPU): an intelligent, RISC-based co-processor with 16 independent channels that performs timing operations - PWM generation, input capture, pulse-width and period measurement, and stepper-motor control - autonomously of the CPU. The Queued Serial Module (QSM) adds a SCI serial port and a QSPI (Queued Serial Peripheral Interface) for expanded I/O without CPU overhead. Typical applications include industrial automation controllers, automotive engine and transmission management, robotics servo control, and telecommunications equipment, where the TPU offloads time-critical tasks from the main CPU. When designing with the MC68332GVFC25, plan external memory carefully: the ROMless configuration requires external flash or EPROM on the bus, and the 5V-era timing parameters must be validated against the specific clock configuration chosen. This page synthesizes distributor availability data, family drop-in alternatives, and practical design notes not found in the manufacturer datasheet, as of 2026-10-18.

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MC68332TS - 32-Bit Modular Microcontroller, CPU32 Core | NXP
MC68332TS

MC68332TS - 32-Bit Modular Microcontroller, CPU32 Core | NXP

The NXP MC68332TS is a 32-bit modular microcontroller built around the CPU32 processor core and packaged in a 132-pin PQFP surface-mount housing. It combines high-performance 32-bit data manipulation with powerful peripheral subsystems and integrates 2KB of static RAM plus a Time Processing Unit (TPU) and a Queued Serial Module (QSM). The TPU is a dedicated micro-engine that offloads timing-critical events from the CPU32, making the MC68332TS well-suited for actuator control, PWM generation, and engine management in industrial systems. A 32-bit microcontroller (MCU) is a single-chip computer that integrates a CPU core, memory, and programmable peripherals around internal buses. The MC68332 belongs to the M68300 family, which standardized on an Intermodule Bus (IMB) so peripheral modules could be reused across variants. The CPU32 in the MC68332TS is object-code compatible with the MC68020, giving designers access to the existing 68k toolchain while gaining improvements such as tighter loops, faster indexed addressing, and reduced interrupt latency. Internal modules include the System Integration Module (SIM), which handles chip-select logic, clock generation, interrupt prioritization, and bus arbitration. Key features of the MC68332TS include the 16-bit TPU with programmable microcoded timing functions, a two-channel QSM with queued SPI and SCI/UART capability, eight independent chip-select outputs, and a 16-bit Timer Counter. The CPU32 core delivers 4-byte instruction prefetch and a hardware multiply/divide unit, while on-chip SRAM of 2KB allows time-critical code and stacks to run from internal memory for deterministic response. The PQFP-132 package exposes the full external address/data bus for external ROM, SRAM, or Flash expansion. Typical applications include industrial automation controllers, automotive ECU prototypes, motor-control drives, robotics, and ruggedized embedded systems. The TPU makes the MC68332TS particularly attractive where complex PWM, input capture, or stepper-motor sequencing is required without burdening the CPU. System designers often use the MC68332 in systems that demand deterministic real-time behavior with an established 68k software base. When designing with the MC68332TS, place a low-ESR decoupling capacitor within 5 mm of each VDD/VSS pair and use at least four layers to route the IMB-equivalent external address/data bus with controlled impedance. Because the part is now in NRND/EOL status, design teams should plan a migration path to a ColdFire or ARM Cortex-M equivalent early in the design cycle to avoid long-term supply risk. This page synthesizes distributor availability, pin-compatible variants, and practical design notes for the MC68332TS that go beyond the manufacturer datasheet alone. Information here is current as of 2026-10-15 and reflects NXP/Motorola documentation, distributor listings, and NXP community guidance.

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MC68334GCEH20 - 32-Bit CPU32 MCU 20MHz ROMless 132-PQFP
MC68334GCEH20

MC68334GCEH20 - 32-Bit CPU32 MCU 20MHz ROMless 132-PQFP

The NXP MC68334GCEH20 is a 32-bit CPU32 (M683xx family) microcontroller integrating a 68k/ColdFire-compatible RISC processing core with a System Integration Module (SIM) and a Time Processing Unit (TPU). It operates at 20 MHz, executes instructions from external memory (ROMless configuration), provides 1 Kbyte of internal RAM, and is housed in a 132-pin PQFP package measuring 24.13 mm x 24.13 mm. The MC68334GCEH20 is specified across the industrial temperature range and is intended for embedded control applications requiring deterministic real-time I/O. The MC68334 belongs to the M68300 family of microcontrollers, which pioneered the integration of microcontroller peripherals with a 32-bit CPU32 processing core. An MCU (microcontroller unit) is a single-chip computer containing a processor core, on-chip memory, and programmable peripherals; the M68300 family extends this concept by integrating a Time Processing Unit (TPU) - a dedicated microcoded engine optimised for high-speed digital I/O tasks such as PWM, period capture, and stepper motor control. Within the broader hierarchy, MCUs sit below microprocessors in integration level: MCU -> embedded microcontroller -> 32-bit microcontroller -> M68300 family -> semiconductor. Key features of the MC68334GCEH20 include 1 Kbyte of standby RAM, a CPU32 core with 32-bit internal architecture, a System Integration Module providing chip-select and bus arbitration logic, a Time Processing Unit for autonomous I/O timing, and a 20 MHz maximum operating frequency. The 132-pin PQFP package supports surface-mount assembly and provides ample I/O for industrial control applications. Architecturally, the CPU32 core executes the M68000 instruction set with 32-bit internal registers, providing code density and deterministic interrupt response. The TPU executes microcoded routines in parallel with the CPU, offloading time-critical tasks such as crank-angle tracking, PWM generation, and quadrature decoding. External memory interfaces support 8/16-bit ROM, SRAM, and peripheral chips via programmable chip-select outputs. Typical applications for the MC68334GCEH20 include automotive engine management (cam/crank timing), industrial motor control (variable-frequency drives), robotics (multi-axis motion control), process control instrumentation, and aerospace flight control subsystems. The 20 MHz clock and TPU make it particularly suited to real-time control loops where deterministic response is required. When designing with this part, engineers should note that the 132-PQFP package requires multilayer PCB layout care and adequate thermal relief on the GND pins. The ROMless architecture mandates external flash or EPROM for code storage and an external watchdog for unattended operation. This page synthesises distributor pricing, lifecycle status, and drop-in compatible alternatives for the MC68334GCEH20, providing design engineers with practical decision support not found in the manufacturer datasheet alone.

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MC68334GEH16 - 32-Bit CPU32 MCU 16MHz ROMless 132-PQFP | NXP
MC68334GEH16

MC68334GEH16 - 32-Bit CPU32 MCU 16MHz ROMless 132-PQFP | NXP

The NXP MC68334GEH16 is a 32-bit CPU32 M683xx microcontroller built on the Motorola/Freescale 68000 family architecture, delivering 16 MHz CPU clock in a 132-pin PQFP (Plastic Quad Flat Package, 24.13 x 24.13 mm) with ROMless configuration. It integrates a Time Processing Unit (TPU), 1 KB on-chip RAM, a System Integration Module (SIM), a queued serial module, and a 16-bit timer counter for embedded automotive and industrial control designs. A CPU32 microcontroller is a 32-bit embedded processor derived from the Motorola 68000 instruction set, optimized for deterministic real-time control. Within the broader chip taxonomy, it sits as: CPU32 -> M68300 family -> 32-bit microcontroller -> embedded processor -> semiconductor. CPU32 devices were widely deployed in automotive powertrain, chassis electronics, body controllers, and industrial automation before ARM-based MCUs took market share. The ROMless design forces external program memory, providing flexibility for late-stage firmware updates and large code bases. Key features include the on-chip Time Processing Unit (TPU), which offloads complex timing functions (PWM, capture, pulse measurement) from the CPU, plus a System Integration Module that integrates chip-select logic, DRAM refresh, and interrupt control. The 132-pin PQFP exposes address, data, and peripheral buses for external memory and I/O expansion. The CPU32 core uses a 32-bit internal architecture with a 16-bit external data bus (CISC design), a 3-stage instruction pipeline, and 4 GB linear address space. The 16 MHz clock yields roughly 2-4 MIPS performance depending on the instruction mix, sufficient for the 1990s-2000s automotive ECU workloads where it was deployed. Typical applications include automotive engine control units, anti-lock brake systems (ABS), electronic stability control, industrial motion controllers, and SCADA equipment. The ROMless architecture supports large external flash for over-the-air firmware updates. When designing with this device, account for its mature 5V CMOS I/O and the legacy 132-pin PQFP footprint, which requires through-hole-compatible surface-mount pads. Confirm RoHS status per lot since earlier PQFP production runs were non-RoHS.

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MC68340AB16E-FR - 32-Bit CPU32 MPU 16MHz QFP-144 | NXP
MC68340AB16E-FR

MC68340AB16E-FR - 32-Bit CPU32 MPU 16MHz QFP-144 | NXP

The NXP MC68340AB16E-FR is a 32-bit integrated microprocessor from the M683xx family featuring a CPU32 core (an enhanced M68000-compatible processor), dual-channel DMA, timers, serial I/O, and chip-select logic integrated on a single die. Operating at 16 MHz with a 32-bit internal data path and 16-bit external memory bus, it is offered in a 144-pin QFP (QFP-144, 28x28 mm) surface-mount package with the -FR suffix denoting tape-and-reel packaging. A microprocessor (MPU) is an integrated circuit that contains the central processing unit of a computer system, including the instruction decoder, arithmetic logic unit, registers, and control logic. The MC68340 belongs to the broader category of embedded processors -> microprocessors (MPU) -> microcontrollers & processors -> semiconductors. It is designed for embedded systems requiring deterministic real-time performance, on-chip peripheral integration, and legacy 68000 instruction-set compatibility, including industrial control, communication gateways, and point-of-sale terminals. Key features of the MC68340AB16E-FR include a CPU32 core delivering 32-bit CISC instruction set performance from a 16-bit external memory interface, two independent DMA channels, two 16-bit timers, dual serial communication interfaces (SCI), and a 16-bit parallel interface. The part also provides programmable chip-select outputs for glue-less memory and peripheral interfacing, and it operates from a single 5 V supply typical of the 68K family. The QFP-144 (28x28 mm) package supports surface-mount assembly and provides access to all CPU32 address, data, and peripheral signals. Architecturally, the CPU32 core is a 32-bit version of the Motorola 68000 with additional instructions optimized for compiled C code, while the on-chip peripheral block reduces system chip count by integrating DMA, timers, and serial controllers that would otherwise require separate logic. The combination of peripherals offered on the MC68340 makes it a candidate for designers who need more integration than a bare M68000 but do not require a full ColdFire or ARM Cortex-M migration. Typical applications include industrial automation controllers, telecommunications equipment, point-of-sale terminals, and legacy embedded systems migrating from discrete 68000 designs to a more integrated solution. The 16 MHz CPU32 core delivers approximately 4 MIPS of sustained throughput, suitable for protocol handling and machine control. When designing with this device, note that the 68K family is mature and NXP has explicitly stated there is no pin-to-pin drop-in replacement for the MC68340; new designs should evaluate ColdFire or ARM Cortex-M alternatives. Existing MC68340 designs must validate supply availability and lifecycle status with NXP franchised distributors before committing to new production runs. This page synthesizes distributor availability, parametric specifications, package data, and lifecycle commentary from NXP, DigiKey, Mouser, Octopart, and LCSC that are not consolidated on any single manufacturer or distributor page.

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MC68340AB16EB1 - 16MHz CPU32 MPU, DMA, 144-QFP | Freescale
MC68340AB16EB1

MC68340AB16EB1 - 16MHz CPU32 MPU, DMA, 144-QFP | Freescale

The Freescale MC68340AB16EB1 is a 32-bit CPU32 microprocessor IC from the MC68xx family running at 16 MHz (16.78 MHz per Rochester listing), housed in a 144-pin QFP (28x28 mm) surface-mount package. It integrates an enhanced M68000-compatible CPU32 core with on-chip DMA, timers, serial I/O, and other peripheral subsystems, replacing multi-chip designs with a single integrated processor. The device operates from a 5V supply and is qualified for commercial temperature grades. A microprocessor (MPU) is the central processing unit of an embedded system, executing instructions fetched from external memory and orchestrating peripherals. The MC68340 belongs to the broader 68000 family of CISC processors (CPU32 -> M68000 -> 32-bit microprocessor -> embedded processor -> semiconductor IC), an architecture that powered early UNIX workstations, gaming consoles, and millions of embedded industrial controllers throughout the 1990s and 2000s. The integration of DMA alongside the core reduces external bus traffic and improves throughput for data-intensive peripherals. Key features include a 32-bit data bus, integrated two-channel DMA controller, parallel I/O, dual timers, and a 16 MHz system clock that delivers approximately 4 MIPS of integer performance. The 144-QFP package offers generous pin count for address, data, and peripheral signals. According to verified distributor data, the part is supplied via Rochester Electronics as a long-term semiconductor stocking partner for legacy NXP/Freescale components. Typical applications include industrial automation controllers, point-of-sale terminals, networked routers, automotive body electronics, and legacy telecom infrastructure. The MC68340's integrated peripherals made it popular for designs where board space and BOM cost mattered more than raw compute throughput. When designing with this device, verify the 5V supply rail noise budget and ensure the external memory interface timing meets the CPU32 wait-state requirements. For new designs, consider whether a ColdFire or ARM Cortex-M replacement offers lower power consumption while maintaining compatibility through a software abstraction layer. This page synthesizes distributor pricing, lifecycle data, and engineering alternatives not consolidated in the original Freescale datasheet, providing decision-ready context for embedded engineers maintaining legacy 68k platforms.

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MC68340AB25E-FR - 25MHz 32-Bit MPU with DMA | NXP QFP-144
MC68340AB25E-FR

MC68340AB25E-FR - 25MHz 32-Bit MPU with DMA | NXP QFP-144

The NXP (formerly Freescale) MC68340AB25E-FR is a high-performance 32-bit integrated microprocessor with direct memory access (DMA), combining an enhanced M68000-compatible CPU32 core, dual 32-bit DMA channels, timers, serial I/O, and parallel I/O on a single integrated circuit. It operates at 25 MHz and delivers 4.8 MIPS, packaged in a 144-pin QFP surface-mount form factor. An MPU (Microprocessor Unit) is a CPU-centric integrated circuit that requires external program and data memory to operate, distinguishing it from a microcontroller that integrates memory on-chip. The MC68340 belongs to the M68000 (68K) CISC processor family, a long-established architecture used in industrial control, telecom, and aerospace embedded systems where deterministic interrupt handling and rich peripheral integration are valued. Within the broader taxonomy it sits as: MPU -> microprocessor -> processor -> digital IC -> semiconductor. Key features include the CPU32 core (32-bit internal registers, 16-bit external data bus), two independent 32-bit DMA channels capable of memory-to-memory and peripheral transfers, dual serial communications interfaces (SCI), two 16-bit timer modules, an 8-bit parallel I/O port, and a system integration module providing chip-select generation and bus arbitration. The 'AB' speed grade denotes the 25 MHz / 4.8 MIPS performance tier, while 'E' indicates the extended temperature range and 'FR' denotes the tape-and-reel packaging suffix. The architecture pairs a CISC instruction set with simple hardware-friendly peripherals, allowing legacy 68K codebases to be ported with minimal software rework. The dual-channel DMA offloads bulk data movement from the CPU, freeing cycles for application logic. The system integration module generates up to 12 chip-select signals from a single oscillator, eliminating external glue logic in many designs. Typical applications include industrial automation controllers, telecommunications line cards, point-of-sale terminals, embedded networking gateways, and legacy M68000 system upgrades. The wide temperature range and robust peripheral set also suit railway, aerospace, and military embedded systems. When designing with this device, allocate the 16-bit external data bus carefully - the CPU32 has 32-bit internal registers but expects a 16-bit memory interface for cost-sensitive designs. Ensure the system integration module's chip-select timing matches the slowest peripheral, and provide a hardware watchdog or external supervisor for safety-critical applications. This page synthesizes distributor pricing, drop-in alternatives from the same M68340 family, comparison data versus related 68K parts, and practical design notes not assembled in a single datasheet view.

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MC68340AG16VE - 32-Bit CPU32 MPU, 16MHz, 144-LQFP | NXP
MC68340AG16VE

MC68340AG16VE - 32-Bit CPU32 MPU, 16MHz, 144-LQFP | NXP

The NXP MC68340AG16VE is a 32-bit integrated microprocessor (MPU) from the M683XX family operating at 16 MHz, housed in a 144-pin LQFP (20x20 mm) surface-mount package. It integrates an enhanced M68000-compatible CPU32 core, two 32-bit DMA channels, a serial channel, a 16-bit timer, and other peripheral subsystems on a single die. What is an MPU? A microprocessor (MPU) is the central processing unit of an embedded system that fetches, decodes, and executes instructions from external memory; unlike a microcontroller, an MPU typically relies on external RAM, ROM, and peripherals. The MC68340 belongs to the CPU32 architecture (Motorola/Freescale legacy), a CISC processor in the broader ColdFire and 68k taxonomy, which includes the MC68331, MC68332, MC68340, and ColdFire successors. It provides 32-bit internal datapaths while accessing external memory efficiently through its 16-bit data bus interface. Key features include the enhanced M68000-compatible CPU32 core supporting 32-bit operations from a 16-bit external memory system, integrated 32-bit DMA with dual channels, an on-chip serial communication interface (SCI), a 16-bit timer module, and an external bus interface supporting 8/16-bit dynamic and static memory. The device operates from a 3.0V to 3.3V supply, making it compatible with 3.3V CMOS peripherals common in 1990s-era embedded designs. Typical applications include industrial automation controllers, telecom base station control boards, point-of-sale terminals, network routers, medical instrumentation, and military/aerospace control systems. It is also widely used in legacy SCADA controllers, CNC machine interfaces, and printer/copier controllers due to its integrated DMA and timer subsystem. The part is well suited to systems requiring deterministic 32-bit processing with deterministic interrupt latency and tight peripheral integration in a single package. When designing with this device, pay attention to bus interface timing to ensure compatibility with slower external memory. The MC68340's 16 MHz CPU32 core delivers up to approximately 4 MIPS of sustained throughput, which matches the requirements of typical 1990s control tasks but is not suitable for modern high-throughput DSP or video processing. Memory mapping and chip-select configuration are configured at reset via external mode pins. This page synthesizes distributor availability, lifecycle status, drop-in alternatives (same NXP/Freescale 68k family and cross-brand equivalents where pin-compatible), and practical design guidance not found in the original manufacturer datasheet alone.

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MC68340CAB25E - 32-Bit CPU32 MPU 25MHz DMA Timer | NXP/Freescale
MC68340CAB25E

MC68340CAB25E - 32-Bit CPU32 MPU 25MHz DMA Timer | NXP/Freescale

The NXP (formerly Freescale) MC68340CAB25E is a high-performance 32-bit integrated microprocessor with direct memory access (DMA), combining an enhanced M68000-compatible CPU32 core, two independent 32-bit DMA channels, two timer modules, a serial communications interface, and a system integration block on a single die. The device operates at 25 MHz, delivers 32-bit CISC performance from a lower-cost 16-bit memory system, and is housed in a 144-pin Ceramic Quad Flat Pack (CQFP-144 / QFP-144 28x28 mm) package. Background - What is a CPU32 microprocessor? A CPU32 is a 32-bit CISC (Complex Instruction Set Computer) microprocessor from the Freescale/NXP M68000 lineage, the direct architectural successor to the original MC68000. It executes the M68K instruction set in 32-bit form while remaining object-code compatible with older 68000/68010/68020 software. CPU32 parts such as the MC68340 family integrate not only the processor core but also system peripherals (DMA, timers, serial, chip-select logic), reducing the part count for embedded industrial designs. The MC68340 sits inside the broader hierarchy MPU -> microprocessor -> 32-bit embedded controller -> industrial computing subsystem. Key features include the CPU32 core, two 32-bit DMA channels, dual 16-bit general-purpose timers (T1/T2), a serial communication port (SCP), a serial peripheral interface (QSPI in some mask sets), eight chip-select outputs with wait-state logic, a 16-bit data bus mode for memory-cost optimization, and a fully static CMOS design that supports DC-to-25 MHz operation. The bus is multiplexed, and the part supports DRAM refresh via internal controllers. Typical applications are industrial control, telecommunications line cards, factory automation, medical instrumentation, point-of-sale terminals, military/aerospace systems, and legacy embedded designs that require deterministic 68K software compatibility. The 144-CQFP package is well-suited to through-hole or socketed industrial assemblies and is rated over the standard -40C to +85C industrial temperature range. When designing with the MC68340, ensure the external bus is properly terminated, the DRAM controller is initialized before bus cycles begin, and the reset configuration mode pins are pulled to the correct levels during power-up. Designers migrating new designs away from this family should consider ColdFire MC68SECC608 or modern ARM Cortex-M parts - per NXP community guidance, no pin-to-pin drop-in replacement exists. This page synthesizes distributor stock signals, parametric alternatives (none drop-in per NXP), lifecycle/EOL context, and practical design notes that are not consolidated in a single manufacturer document.

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