Microcontroladores

Produtos (19.000+)

MC68302CRC20C157 - 20MHz M68000 IMP, 132-PGA | NXP
MC68302CRC20C157

MC68302CRC20C157 - 20MHz M68000 IMP, 132-PGA | NXP

The NXP MC68302CRC20C157 is an Integrated Multiprotocol Processor (IMP) from the M68302 family that combines an M68000-derived 8/16-bit core operating at 20 MHz with on-chip peripherals including a serial communications controller, DMA controller, and parallel I/O. It is housed in a 132-pin ceramic/ceramic-equivalent PGA (Pin Grid Array) package on a 39.63 mm x 39.63 mm body, and is part of the long-running MC68302 communications-controller lineage originally introduced by Motorola and continued by Freescale and NXP. An Integrated Multiprotocol Processor (IMP) is a specialized embedded microprocessor class that fuses a general-purpose CPU core with serial-communication hardware blocks (SCC, SMC) so a single chip can terminate multiple telecom protocols. Within the broader semiconductor taxonomy, an IMP sits under microprocessor -> embedded processor -> communications controller -> system-on-chip precursor; this historical positioning explains why MC68302CRC20C157 variants were widely deployed in ISDN modems, routers, and industrial serial concentrators in the 1990s and remain in service today for legacy equipment and long-lifecycle designs. Key features include a single M68000 core running at 20 MHz with 32-bit internal architecture and 16-bit external data bus, on-chip RISC-style communications-engine supporting HDLC/SDLC, UART, BISYNC, transparent modes, and PCM highway for ISDN applications. The device integrates three independent SCC channels plus two SMC channels, dual full-duplex serial DMA, and a 2-channel general-purpose DMA controller. Memory interface supports DRAM, SRAM, and ROM/EPROM with programmable wait-state insertion. Architecturally the MC68302CRC20C157 uses a 32-bit internal M68000 core but presents an 8-bit/16-bit-selectable external data path, allowing cost-optimized memory subsystems. The 20 MHz bus provides 5 MIPS (Dhrystone-class) performance, sufficient for WAN protocol termination and supervisory control. Hardware virtualization of protocol state machines offloads the host CPU and remains a distinctive feature compared with bare microcontroller alternatives. Typical applications include ISDN terminal adapters, X.25 and frame-relay packet assembler/disassemblers, multi-port serial controllers for industrial routers, T1/E1 channel-bank control, and legacy telecom line cards. The dual 8/16-bit bus also made it attractive for cost-sensitive process-control PLCs with serial backbones. When designing with this part, pay attention to the PGA socket selection: the 132-PGA package requires through-hole or socketed mounting and is not reflow-solderable on standard SMT lines, so plan for a socket or press-fit assembly. Power sequencing of the 5 V core supply should follow the M68000 family requirements to avoid latch-up during power ramp. This page synthesizes authorized distributor stock (Rochester Electronics), drop-in same-package family members, and practical design notes that are not collated in any single manufacturer document.

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MC68302EH16C - 16MHz M683xx Multi-Protocol Com Proc | NXP
MC68302EH16C

MC68302EH16C - 16MHz M683xx Multi-Protocol Com Proc | NXP

The NXP MC68302EH16C is a 16 MHz multi-protocol communications processor built around the M68000 core, integrating a 1-core 8/16-bit CPU with on-chip peripherals for serial communications in a 132-pin PQFP (46x46 mm) package. As a member of the M683xx MPU family, it delivers CPU throughput of 1.1 MIPS at 16 MHz while embedding channelized SCCs, SCCs, SMCs, a DMA controller, and a 1152-byte dual-ported RAM for tightly-coupled data movement. An MPU (Microprocessor Unit) is a CPU-centric chip without on-chip non-volatile program memory, historically used as the host processor in deeply embedded designs such as routers, ISDN terminals, and industrial controllers. Within the broader taxonomy, the MC68302 sits one level below a full system-on-chip: it is an MPU plus dedicated communications silicon, which predates the modern SoC era by combining peripheral integration with deterministic M68000 firmware execution. Headline specifications include a 16.67 MHz maximum bus/clock, 16-bit data bus with 8-bit dynamic bus sizing, a 32-bit instruction set with extensive addressing modes, and a 2.7 V to 5.5 V tolerant I/O interface. Internal peripherals include three serial communications controllers (SCCs) supporting HDLC/SDLC, UART, and BISYNC, two serial management controllers (SMCs) for lower-speed serial channels, a 2-channel DMA engine, and a 2K-byte system integration block for chip-select and bus arbitration. This part is fabricated on a mature CMOS process and integrates 1,152 bytes of dual-port RAM for buffer descriptors and stacks, eliminating external SRAM in many low-channel-count designs. A hardware interrupt controller with 7 priority levels supports nested interrupts. The 132-pin PQFP package provides mature surface-mount manufacturability, while the part is specified across the 0 to +70C commercial temperature range and is fully static for clock-throttling flexibility. Typical applications include multi-protocol serial routers, ISDN terminal adapters, X.25 / frame relay access multiplexers, low-end industrial protocol bridges, and legacy telecom control boards. Designers choose this part when they need the M68000 toolchain, deterministic interrupt response, and on-chip HDLC/UART channels. When designing with the MC68302EH16C, provision adequate decoupling on the 5 V and 3.3 V rails and route the parallel bus with controlled-impedance traces. Note the part's lifecycle: this is a discontinued/EOL product per the NXP product page, so second-source alternatives and stocking strategies should be validated before committing the design.

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MC68302EH16CB1 - M68302 Integrated MPU, 16MHz, 132-PQFP | NXP
MC68302EH16CB1

MC68302EH16CB1 - M68302 Integrated MPU, 16MHz, 132-PQFP | NXP

The NXP MC68302EH16CB1 is an integrated multi-channel communications processor combining the M68000 microprocessor core with a flexible RISC communications processor (CPM) in a 132-pin PQFP (46x46 mm) package. It operates at 16 MHz and integrates peripherals including DRAM controller, serial communication channels, timers, and parallel I/O for embedded networking designs. An MPU (microprocessor unit) is the central processing element of an embedded system, executing instructions, managing memory, and orchestrating peripherals through integrated or external bus interfaces. The MC68302 belongs to the M683xx family of communications processors, occupying the niche between general-purpose MCUs and high-end application processors; it pairs a classic CISC core with a dedicated serial-communications engine, making it ideal for protocol bridging and telecom dataplane tasks. Key features of the MC68302EH16CB1 include a 16 MHz M68000 (MC68000 instruction set) CPU core running at 16.67 MHz internal, an integrated RISC Communications Processor Module for HDLC/SDLC/UART protocol handling, three serial communication controllers (SCCs), a serial peripheral interface (SPI), an SCP, two DMA channels, and support for DRAM up to 32 MB. The device operates from a single 5 V supply. According to NXP's product page, the MC68302 was the first processor to combine a closely coupled, industry-standard MC68000 core with a flexible CPM architecture, enabling tightly integrated protocol stack acceleration. Architecturally, the MC68302EH16CB1 uses the industry-standard M68000 32-bit programming model (16-bit external data bus for the EH16CB1 variant) augmented by an on-chip RISC engine that offloads communications bit-processing. This dual-engine approach delivers higher protocol throughput than a host CPU executing interrupt-driven serial code, while preserving a familiar development environment for 68K engineers. Typical applications include ISDN terminal adapters, X.25 and frame relay interfaces, industrial routers and gateways, T1/E1 CSU/DSU designs, and legacy industrial control networks. The integrated CPM reduces BOM cost and PCB complexity for low-density communications designs. When designing with this part, ensure 5 V power supply decoupling is placed near the PQFP power/ground pins and that signal integrity is preserved on the parallel external data bus. Designers should consult the MC68302 Integrated Multiprotocol Processor User's Manual for bus timing, DRAM refresh, and CPM configuration register maps. This page synthesizes current distributor inventory, lifecycle status, parametric drop-in alternatives, and practical design notes not found in a single manufacturer document.

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MC68302EH20C - 20MHz M683xx 8/16-Bit MPU | NXP | 132-PQFP
MC68302EH20C

MC68302EH20C - 20MHz M683xx 8/16-Bit MPU | NXP | 132-PQFP

The NXP MC68302EH20C is a 20 MHz M68000-family microprocessor (MPU) from the M683xx integrated communications controller line, integrating a 68000-class CPU core with on-chip peripherals in a 132-pin PQFP package (24.13 x 24.13 mm). The EH20C speed grade operates from a 5 V supply with a 20.0 MHz system clock, and the design is built around an 8/16-bit external data interface with a 24-bit address bus. What is an M683xx microprocessor? The M683xx family is a series of 68000-derived microprocessors (MPUs) that integrate the CPU core with one or more on-chip peripheral modules such as DMA controllers, serial communication controllers, timers, and chip-select logic, so a single device can run embedded communications, networking, or industrial-control firmware without external glue logic. Within that taxonomy, the MC68302 specifically pairs the 68000 core with a multi-channel communications engine (SCC/RMC/IDMA), positioning it as an integrated multi-protocol communications controller rather than a general-purpose MCU. Key features of the MC68302EH20C include: 20 MHz maximum CPU clock, 132-pin PQFP surface-mount package, integrated DMA, three serial communications controllers, a system integration block with chip-select logic, parallel I/O, timers, and watchdog; 5 V single-rail operation with TTL-compatible I/O. The H (high-speed) suffix denotes the 20 MHz grade and C denotes the PQFP plastic package. Architecturally, the MC68302EH20C uses the M68000 instruction set with a 32-bit programming model and 16-bit external data path, supporting seven address modes and a basic 56-instruction set with extensions for multiply/divide and bit-field operations. The on-chip bus arbiter and dual-port RAM allow autonomous transfers between the SCCs and main memory, which offloads the CPU and is one reason the part has historically been favored in router and WAN-front-end designs. Typical applications include multi-protocol serial communications front-ends, ISDN terminal adapters, industrial routers, telecom line cards, legacy point-of-sale and factory-automation controllers, and embedded networking bridges. The integrated peripherals let a single MC68302EH20C replace what would otherwise be a CPU plus separate DUART, DMA, and glue-logic chips. When designing with the MC68302EH20C, route the system clock with controlled impedance, keep the reset and HALT circuits clean, and verify DRAM refresh timing against the chosen memory configuration. Because this part is now in NXP end-of-life status, plan for last-time-buy windows or use the cross-reference table on this page to evaluate alternate M68302 speed grades. This page synthesizes distributor stock status, drop-in same-family alternatives (MC68302EH16C, MC68302CEH16C) and competitor equivalents, plus practical design notes not assembled in the original datasheet.

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MC68302EH25C - 25MHz 68K Integrated Comm Processor MPU | NXP
MC68302EH25C

MC68302EH25C - 25MHz 68K Integrated Comm Processor MPU | NXP

The NXP MC68302EH25C is a 25 MHz integrated multiprocessor from the MC68302 family that combines a M68000-compatible 32-bit CPU core with an on-chip RISC-based Communications Processor (CP), DMA controller, and a rich set of serial/parallel peripherals, housed in a 132-pin PQFP package measuring 46 x 46 mm. It targets networking, telecom, and embedded communications applications that benefit from hardware-assisted protocol handling alongside a general-purpose 32-bit instruction set. Background: A microprocessor (MPU) is the central processing unit of an embedded system, executing instruction code, managing memory, and arbitrating peripheral access. The MC68302EH25C belongs to the M68000 (68K) family of CISC processors, which historically dominated telecommunications and industrial control. The "EH" suffix designates the Enhanced Hardware variant, and "25C" denotes a 25 MHz clock with the ceramic-windowed / commercial (C) temperature designation. This part is a system-on-chip predecessor of the ColdFire family, integrating CPU + DMA + serial + timers into one die. Key features include a 32-bit M68000 instruction set architecture with 8/16-bit external data bus, a RISC Communications Processor for HDLC/SDLC/UART/Transparent bit-stream handling, three independent full-duplex serial communications controllers (SCC), two serial management controllers (SMC), a 2-channel DMA controller, three timers, 1152 bytes of dual-port RAM for CP/CPU messaging, and an interrupt controller supporting up to 7 external IRQ lines. The architecture uses a Harvard-style split between the 68000 core and the RISC CP, allowing the CP to handle real-time bit-stream processing autonomously while the 68000 core runs system software. The 8/16-bit dynamic bus interface supports DRAM refresh and glueless memory interfacing, reducing external logic in cost-sensitive designs. Typical applications include ISDN terminal adapters, X.25 / frame relay packet assemblers, industrial control networks, serial-port multiplexers, and proprietary field-bus bridges. The integrated CP offloads HDLC framing so the 68000 core can manage higher-layer protocols without real-time jitter. When designing with this device, allocate at least 4.5 us between DMA bursts to avoid starving the SCC FIFOs. Note that this part is NXP End-of-Life; long-term designs should consider the pin-compatible MC68302FC variant or migrate to ColdFire MCF523x. This page synthesizes distributor stock, NXP end-of-life notices, drop-in alternative guidance, and engineering design notes not found in the original manufacturer datasheet.

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MC68302RC16C - 16MHz M68000 IMP | NXP Semiconductors
MC68302RC16C

MC68302RC16C - 16MHz M68000 IMP | NXP Semiconductors

The NXP Semiconductors MC68302RC16C is a 16 MHz Integrated Multiprotocol Processor (IMP) based on the M68000 family core with 1 core operating at 8/16-bit data width, housed in a 132-pin PGA (34.5 x 34.5 mm) package. It belongs to the M683xx microprocessor product family and operates from a 5 V supply, integrating a closely coupled industry-standard MC68000/MC68008 CPU core with a flexible communications architecture aimed at networking and communications controllers. What is an Integrated Multiprotocol Processor (IMP)? An IMP is a highly integrated single-chip solution that combines a general-purpose microprocessor with dedicated serial-communications peripherals (such as HDLC/SDLC controllers, UARTs, and timers) plus DMA channels, all on the same silicon die. Within the broader component taxonomy the MC68302 sits between a microcontroller (MCU) and an applications processor, with a product hierarchy of M68000 core -> microprocessor (MPU) -> standard microprocessor -> discrete digital IC -> semiconductor. The IMP concept reduces board area, BOM cost and software complexity when implementing multi-channel communication endpoints. Key features include the M68000 CPU core running at 16 MHz, three serial communications controllers (SCCs) supporting HDLC/SDLC/UART/Transparent modes, two serial management controllers (SMCs), two peripheral/timer modules, up to four DMA channels, and up to 2 Kbytes of dual-ported system RAM. The device supports a 16-bit data bus and a 24-bit address bus, four external chip-select outputs with programmable wait-state generation, and a 5 V single supply. Software compatibility with the broader MC68000 family allows reuse of existing toolchains, compilers, and OS ports. Architecturally, the MC68302 combines the proven 68000 instruction set with RISC-style on-chip peripheral engines connected via an internal bus, allowing the CPU to offload bit-rate-oriented protocol work to dedicated hardware. This architecture delivers deterministic throughput on multiple HDLC channels while leaving CPU cycles available for the upper-layer protocol stack and management plane. Typical applications include multi-channel WAN routers and bridges, ISDN terminal adapters, telecom line cards, industrial serial concentrators, and legacy networking equipment. The combination of an industry-standard CPU and on-chip communications peripherals also makes the part attractive for protocol-conversion gateways and embedded control planes where deterministic I/O is required. When designing with this device, allocate the 132-pin PGA footprint on a through-hole or pin-grid-array compatible PCB, provide a 5 V supply with adequate decoupling near the supply pins, and use a Motorola-compatible toolchain (such as a 68K compiler and a BDM or background-debug interface) for firmware bring-up. Note that this part contains lead and is RoHS non-compliant; it is now considered a legacy/extended-life component with new designs expected to migrate to RoHS-compliant successors. This page synthesizes distributor pricing, the pin-equivalent same-family alternatives, and practical design notes not found in the original manufacturer datasheet.

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MC68302RC20C - M68302 20MHz Integrated Multiprotocol Processor | NXP
MC68302RC20C

MC68302RC20C - M68302 20MHz Integrated Multiprotocol Processor | NXP

The NXP MC68302RC20C is a 20 MHz integrated multi-channel communications processor that combines an MC68000/MC68008 microprocessor core with a flexible communications architecture on a single chip, housed in a 132-pin ceramic PGA (Pin Grid Array) package measuring 34.5 x 34.5 mm. The MC68302 was the first device to offer the benefits of a closely coupled, industry-standard M68000 core with on-chip DMA, serial communications channels, and parallel I/O, making it a versatile building block for networking and communications products. An integrated multiprotocol processor (IMP) is a system-on-chip device that merges a general-purpose CPU with peripheral communication controllers, reducing the bill of materials for routers, bridges, and embedded communication nodes compared with discrete CPU-plus-ASIC designs. Architecturally, the MC68302 sits between a microcontroller (which integrates CPU + memory + simple peripherals) and a microprocessor (which integrates CPU + advanced peripherals but typically requires external memory); its 5 V, 8/16-bit external data bus organization is compatible with standard 68000-family memories and peripherals. Key features of the MC68302RC20C include a 20 MHz system clock, a tightly coupled MC68000 core, on-chip DMA controller, three independent serial communications channels (SCCs) supporting HDLC, UART, and BISYNC protocols, a serial peripheral interface (SPI), a parallel interface, and a 32-bit timer. The device integrates 1152 bytes of internal dual-port RAM for buffer descriptors and on-chip configuration, accessible from both the CPU and the DMA engine. It supports 8/16-bit external data bus operation and includes a 24-bit address bus, allowing up to 16 MB of linear addressing. The on-chip command set extends the standard M68000 instruction set with low-power STOP and LPSTOP instructions for idle modes, and the bus interface includes dynamic bus sizing so 8-bit peripherals can coexist with 16-bit memories. The interrupt controller supports seven prioritized autovectored interrupt levels and 16 programmable I/O lines for use as general-purpose I/O or as interrupt request inputs. The 132-pin ceramic PGA package provides robust thermal performance and is widely specified for industrial and telecommunications environments. Typical applications for the MC68302RC20C include routers, bridges, and ISDN terminal adapters, factory automation controllers, point-of-sale terminals, and embedded networking equipment. Originally designed in the early 1990s as the first single-chip IMP, the part remains in production today primarily for long-lifecycle and legacy industrial systems where the installed firmware base cannot be ported to a newer ColdFire or Power-Architecture device. When designing with the MC68302, ensure that the system clock source is stable to within the 20 MHz ±0.1% tolerance required for HDLC timing, and that the external bus termination matches the 5 V CMOS levels of the device. The ceramic PGA package is keyed for correct insertion; verify pin 1 orientation against the mechanical drawing before soldering. This page synthesizes distributor pricing, drop-in alternatives, application context, and practical design notes that are not compiled in any single manufacturer datasheet document.

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MC68306AG16B - 16MHz Integrated EC000 MPU | NXP | 144-LQFP
MC68306AG16B

MC68306AG16B - 16MHz Integrated EC000 MPU | NXP | 144-LQFP

The NXP MC68306AG16B is an integrated 32-bit microprocessor from the M683xx family that combines a 68EC000 CPU core with system-level peripherals in a single 144-pin LQFP (20x20) package. It operates at 16 MHz over a 5V supply, providing 68000-class performance with integrated glue logic that reduces external component count for embedded control designs. A microprocessor (MPU) is the central processing unit of an embedded computing system, typically paired with external memory and peripherals via an external bus. The 68000/68EC000 family sits in the hierarchy of 32-bit CISC microprocessors -> M68000 family -> Motorola/Freescale/NXP M683xx integrated processors -> embedded industrial control. The MC68306 specifically integrates the 68EC000 core with common system peripherals, eliminating the need for external bus arbitration, interrupt controllers, and chip-select logic that discrete 68000 designs require. Key features include 16 MHz CPU clock, 32-bit internal data path with 16-bit external data bus (EC000 core), 24-bit address bus, integrated peripherals (timers, serial, parallel I/O, interrupt controller, chip-select logic), and a wide 5V operating supply. The 144-LQFP package provides ample I/O for the integrated peripheral set while remaining hand-solderable for prototypes. Architecturally, the MC68306 separates the CPU core from the peripheral bus, allowing peripheral operations to occur in parallel with CPU execution. The 68EC000 core uses a simplified 16-bit external data path versus the full MC68000's 32-bit path, reducing bus complexity while preserving the 32-bit internal register set. Typical applications include industrial process control, point-of-sale terminals, medical instrumentation, building automation controllers, automotive body electronics, and legacy equipment maintenance. The integrated peripherals make it suitable for designs where board space, BOM count, and reliability are priorities. When designing, ensure the 5V supply rail is clean and decoupled with 0.1uF and 10uF capacitors near each power pin. The EC000's 16-bit external bus requires careful PCB trace length matching (within 1 inch) for memory accesses above 8 MHz to prevent bus errors. This page synthesizes distributor pricing, drop-in alternatives, lifecycle status, and practical design notes from the NXP product brief, complementing the official datasheet with actionable engineering context.

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MC68306CEH16B - 16MHz 32-Bit Integrated EC000 MPU | NXP
MC68306CEH16B

MC68306CEH16B - 16MHz 32-Bit Integrated EC000 MPU | NXP

The NXP MC68306CEH16B is an integrated 32-bit microprocessor based on the MC68EC000 core, delivered in a 132-pin bumpered PQFP package at 16 MHz. It combines an EC000 processor core, system integration logic, DRAM controller, serial channel, timers, and chip-select logic in one device, replacing multiple discrete 68000-family glue chips with a single IC. Background: An MPU (microprocessor unit) is the central processing element of an embedded system. The 68000/EC000 family is a CISC 32-bit architecture with a 16-bit external data bus, widely used in industrial control, automotive body electronics, telecommunications, and legacy embedded designs. The MC68306 specifically targets systems that need 68000-class CPU performance plus built-in peripherals (DRAM controller, UART, timers, parallel I/O, interrupt controller, chip-select logic), enabling engineers to build compact MPU-based boards with minimal external logic. Within the broader taxonomy: MPU -> microprocessor -> processor -> digital IC -> semiconductor. Key features: 16 MHz clock, 32-bit internal architecture with 16-bit external data bus, integrated DRAM controller with refresh, two DMA channels, dual serial channels (UART), 16-bit timer, 8-bit parallel I/O port, eight chip-select outputs, interrupt controller, and 5 V I/O. The 132-pin bumpered PQFP (24.13 mm x 24.13 mm) provides robust lead compliance and reliable solder joints through thermal cycling - important for industrial and automotive-grade assemblies. The MC68306EC000 core executes the M68000 instruction set, supports seven address modes and 14 data types, and includes a hardware multiply/divide unit. To deliver M68000-class performance, the device integrates common system peripherals so designers spend less time building glue logic and more time on application code. The 16 MHz version (CEH16B suffix) targets applications where the 8 MHz or 10 MHz variants are too slow but full 25 MHz operation is unnecessary, balancing cost and performance for typical control loops and protocol stacks. Typical applications include industrial process controllers, building automation controllers, point-of-sale terminals, automotive body controllers, legacy communications equipment, printer controllers, and embedded control boards requiring 68000 software compatibility. Designers often select it for long-life-cycle products where re-validation costs are prohibitive and the mature toolchain (GNU m68k-elf, Diab, GCC) and RTOS support (OSEK, RTEMS, SMX) are well established. When designing with this part, ensure the 5 V supply is well-decoupled with 100 nF ceramic caps near each VCC pin and a bulk 10 uF tantalum or aluminum-polymer cap. The 16 MHz bus requires careful PCB layout: keep traces short, maintain a continuous ground plane under the PQFP, and route the clock signal first. Also plan for the MC68306's address bus to drive memory directly - bus loading analysis is recommended when adding external peripherals. This page synthesizes distributor pricing, drop-in NXP alternatives, comparison with the MC68332 and MC68HC16Z1, and practical design notes not found in the manufacturer datasheet - giving engineers a single source for procurement, selection, and PCB implementation guidance.

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MC68306EH16BR2 - 16MHz EC000 MPU, 132-PQFP | NXP/Freescale
MC68306EH16BR2

MC68306EH16BR2 - 16MHz EC000 MPU, 132-PQFP | NXP/Freescale

The NXP (formerly Freescale) MC68306EH16BR2 is a 32-bit integrated EC000 microprocessor (MPU) from the M683xx Coldfire/M68K family, operating at 16 MHz and housed in a 132-pin Plastic Quad Flat Pack (PQFP) package measuring 24.13 mm x 24.13 mm. It integrates a 32-bit EC000 core with on-chip peripherals and DRAM controller, providing a single-chip embedded processing solution for industrial control, telecom, and legacy M68K designs. The device is currently listed as Obsolete per distributor stock pages, with remaining inventory available through authorized distributors and aftermarket suppliers. An MPU (Microprocessor Unit) is a CPU-centric integrated circuit that requires external memory and peripherals to form a complete system. The M68K family traces its lineage to the Motorola 68000 architecture introduced in 1979, which pioneered a flat 32-bit programming model and orthogonal instruction set. The MC68306 specifically integrates the EC000 core with system glue logic - DRAM controller, chip-select logic, timers, and serial ports - to reduce total BOM in cost-sensitive embedded designs. Within the broader taxonomy, the MC68306 sits under microprocessor -> MPU -> 32-bit processor -> embedded processor -> integrated circuit. Key features include a 16 MHz maximum clock frequency, 5.0 V I/O voltage, single 32-bit core, and integrated DRAM controller. The PQFP-132 package supports surface-mount assembly on legacy through-hole-friendly footprints and remains compatible with the original 68306 reference designs. The architecture retains M68K instruction compatibility, allowing code developed for earlier 68000/68306 designs to migrate without software rewrites. The part supports up to 4 GB of address space through 32-bit linear addressing. Typical applications include industrial automation controllers, telecommunications infrastructure, point-of-sale terminals, legacy M68K embedded systems, and factory automation equipment. The integrated DRAM controller and chip-select logic reduce external component count compared to discrete CPU implementations. Designers continue to specify the MC68306EH16BR2 for maintenance of installed bases and for long-life-cycle industrial systems where requalification costs discourage migration to newer architectures. When designing with this device, note that the part is Obsolete per current distributor listings (as of 2026-10-16); consider NXP's recommended migration path to ColdFire MCF5208 or similar modern M68K-compatible devices for new designs. PCB layout must accommodate the 132-pin PQFP footprint with adequate thermal relief. Decoupling capacitors should be placed close to the multiple VCC/GND pairs. This page synthesizes distributor pricing, lifecycle status, and migration options not found in the original manufacturer datasheet.

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MC68331CAG25 - 32-bit M68300 MCU 25MHz | NXP LQFP-144
MC68331CAG25

MC68331CAG25 - 32-bit M68300 MCU 25MHz | NXP LQFP-144

The NXP Semiconductors MC68331CAG25 is a highly-integrated 32-bit microcontroller from the M68300 ColdFire/CPU32 family, operating at 25 MHz and housed in a 144-pin LQFP package measuring 20x20 mm. A 32-bit microcontroller is a microprocessor core with on-chip peripherals, memory interfaces, and I/O designed for embedded control. The MC68331 builds its system from standardized functional modules - the CPU32 processor core, a System Integration Module (SIM), a General Purpose Timer (GPT), and a Queued Serial Module (QSM) - that interconnect through a common Intermodule Bus (IMB). This modular taxonomy places the device in the larger hierarchy of CPU -> MPU -> microcontroller -> embedded processor -> semiconductor. Key features include 25 MHz CPU32 core performance, ROMless architecture for flexible external program memory, 18 programmable I/O lines, internal oscillator support, and a 144-pin LQFP (20x20 mm) footprint. The SIM integrates chip-select logic, interrupt control, and bus arbitration; the GPT supplies configurable timers for event capture and waveform generation; the QSM provides queued SPI and SCI/UART channels for asynchronous and synchronous serial communications. The CPU32 core uses a 32-bit Von Neumann architecture with a 32-bit data path and 32-bit address bus. The ROMless variant routes external program fetch through the SIM's chip-select and wait-state logic, enabling large code and data spaces. The modular IMB topology makes peripheral expansion and configuration relatively simple compared with single-block designs. Typical applications include automotive body and chassis controllers, industrial automation and motor drives, robotics, process control, factory automation, and embedded communications gateways where deterministic 32-bit performance and flexible memory mapping are required. When designing with this part, prioritize decoupling and IMB signal integrity: place 0.1 uF ceramic capacitors near each VDD/VSS pair, route the IMB clock with controlled impedance, and verify chip-select timing with worst-case wait-state scenarios. Note that this MPN is marked End of Life on the NXP product page; plan for obsolescence accordingly. This page consolidates distributor pricing, drop-in M68300 alternatives, and design considerations not assembled in the manufacturer datasheet alone.

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MC68331CEH25 - 25MHz CPU32 M68300 Microcontroller PQFP-132 | NXP
MC68331CEH25

MC68331CEH25 - 25MHz CPU32 M68300 Microcontroller PQFP-132 | NXP

The NXP (formerly Freescale/Motorola) MC68331CEH25 is a 32-bit modular microcontroller built around the CPU32 core running at 25 MHz, packaged in a 132-pin PQFP (24.13 mm x 24.13 mm) and supplied as a ROMless device for external program memory. It integrates a System Integration Module (SIM), a General-Purpose Timer (GPT) and a Queued Serial Module (QSM) on a common intermodule bus (IMB), and is a member of the M68300 modular microcontroller family. According to the NXP product page, the part is announced as End of Life, so engineers should plan replacement now rather than treating the listing as a long-term supply line. A 32-bit microcontroller is an embedded processing IC whose datapath, registers and ALU are 32 bits wide, enabling single-instruction operations on wide data words and larger linear address spaces than 8- or 16-bit parts. The M68300 family belongs to the ColdFire/M68K lineage (CPU32 -> M68k -> ColdFire -> embedded 32-bit MCU) of CISC RISC-style CISC cores, and within NXP's portfolio it sits below the ColdFire MCF5xxx line. The MC68331CEH25 uses the standard M68300 modular IP blocks, which simplifies migration within the family. Key features include 25 MHz CPU32 core performance, ROMless operation for flexible external memory interfacing, the GPT timer block (with capture, compare and pulse-width modulation functions), the QSM providing queued SCI and SPI channels, and the SIM block that handles chip-select generation, system protection, clock synthesis and interrupt prioritization. The 132-pin PQFP footprint gives access to the full external bus plus all on-module peripheral pins. Typical applications include industrial control systems, automotive body and chassis electronics (pre-CAN-era platforms), factory automation, motor control via the GPT PWM outputs, and embedded communication gateways that leverage the QSM serial channels. The 132-pin PQFP package and ROMless architecture make the part attractive where high-performance 32-bit processing is needed alongside custom boot/storage strategies. When designing with this device, ensure the external bus and chip-select signals are properly terminated, the 25 MHz system clock is stable, and the Vcc rails meet the M68300 family DC specifications referenced in the datasheet. Because the part is in NXP's End-of-Life program, source any qualification stock carefully and review the discontinuance notice for the official last-time-buy window and recommended migration target.

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MC68331CFC25 - 32-Bit 25MHz ROMless MCU | NXP
MC68331CFC25

MC68331CFC25 - 32-Bit 25MHz ROMless MCU | NXP

The NXP Semiconductors MC68331CFC25 is a 32-bit, 25 MHz ROMless microcontroller IC in a 132-pin PQFP package measuring 24.13 mm by 24.13 mm. It combines a CPU32 processor with system integration and communications peripherals for embedded control applications. The verified distributor listing identifies the device as a ROMless MCU, while the manufacturer description identifies the CPU32, System Integration Module (SIM), General Purpose Timer (GPT), and Queued Serial Module (QSM). A microcontroller is a semiconductor that integrates a processor core, memory interface, peripherals, and control logic into one device. The MC68331 belongs to the MCU32 embedded-processing hierarchy and uses a common intermodule bus, or IMB, to connect its internal modules. This architecture makes it useful where a system needs deterministic control, serial communication, timer functions, and external memory access without a dedicated host processor. The verified device identity specifies a 32-bit architecture, 25 MHz operating frequency, ROMless configuration, and 132-PQFP package. The MC68331CFC25 suffix indicates a specific package, temperature, and speed ordering configuration, but detailed electrical limits, memory sizes, peripheral ratings, and operating-temperature values were not included in the supplied verified data. Those parameters are therefore not inferred here. The manufacturer’s product page is the appropriate source for confirming the complete technical configuration before design-in. Typical application domains include industrial equipment, communications controllers, motion or sequencing systems, and other embedded platforms that benefit from the CPU32 architecture. In a typical design, the CPU32 executes control software from external memory, while the SIM, GPT, and QSM modules support system integration, timing, and serial communication. The 132-pin PQFP package provides a substantial pin count for external bus, memory, peripheral, control, and signal connections. The primary design consideration is that the MC68331 is ROMless: external memory is required for program storage or data storage according to the system architecture. Engineers should verify memory-interface compatibility, peripheral multiplexing, pin assignments, clock requirements, and electrical constraints against the manufacturer datasheet before layout or firmware deployment. This page consolidates the verified distributor identity, manufacturer architecture description, package information, sourcing links, and engineering limitations for MC68331CFC25. It intentionally avoids unsupported claims about unprovided electrical specifications and distinguishes confirmed facts from data requiring a datasheet review.

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MC68331CFC25B1 - 32-Bit 25 MHz ROMless MCU | NXP
MC68331CFC25B1

MC68331CFC25B1 - 32-Bit 25 MHz ROMless MCU | NXP

NXP Semiconductors MC68331CFC25B1 is a 32-bit, 25 MHz ROMless microcontroller integrated into a 132-pin PQFP package measuring 24.13 mm by 24.13 mm. The device combines a CPU32 processor with peripheral subsystems connected through a common intermodule bus, making it suitable for embedded control, communications, industrial automation, and legacy system upgrades. The verified distributor data identifies the MC68331 as a highly integrated MCU with ROMless configuration and HCMOS technology. A microcontroller is a semiconductor device that combines a processor core, memory interfaces, timers, communications peripherals, interrupt control, and other hardware functions on one integrated circuit. In the hierarchy of electronic components, the MC68331 belongs to the microcontroller, embedded processor, and semiconductor categories. Its ROMless architecture requires an external memory source for program storage, while its integrated peripherals can reduce the component count in an embedded control design. The principal verified characteristics are a 32-bit CPU32 architecture, a 25 MHz operating frequency, ROMless operation, and a 132-pin PQFP package. These specifications define the external memory and clock requirements of the design while providing a large pin count for peripheral connections. The 24.13 mm by 24.13 mm package is substantially larger than a typical small-outline or compact QFP design, but it offers extensive package access for systems requiring numerous I/O, bus, control, and power connections. The MC68331 technical summary describes a highly integrated 32-bit microcontroller with high-performance data-manipulation capabilities and powerful peripheral subsystems. Its standard modules communicate through a common intermodule bus, providing an organized architecture for connecting processor and peripheral functions. This makes the device relevant to established embedded platforms where the surrounding software, memory interface, and peripheral ecosystem are already designed around the MC68331 family. Typical applications include industrial equipment, data acquisition systems, communications controllers, motion or machine control, test equipment, and embedded products that retain an existing MC68331-based architecture. Designers should confirm the exact pinout, electrical limits, memory requirements, timing, peripheral availability, and software compatibility against the relevant manufacturer technical summary before layout or firmware deployment. The verified search results do not provide a complete manufacturer pin table, so no pin names or electrical values are inferred here. For new designs, the critical design trade-off is the ROMless requirement: external program-memory hardware must be specified separately, and the complete board-level memory map must be validated. For repair or continuation of an existing product, preserving the original memory interface, clock source, bus timing, and package footprint is generally more important than selecting a modern controller with a different architecture. The 132-PQFP package and 25 MHz CPU32 position should therefore be treated as fixed constraints when evaluating this MPN. This page consolidates the verified distributor identity, package information, and cross-reference search context for MC68331CFC25B1. It distinguishes documented facts from unavailable technical parameters and emphasizes the need to validate memory, pin, electrical, and lifecycle details with the original technical documentation before making a production decision.

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MC68331CPV20 - 32-Bit 20MHz ROMless MCU | Motorola
MC68331CPV20

MC68331CPV20 - 32-Bit 20MHz ROMless MCU | Motorola

The Motorola MC68331CPV20 is a 32-bit ROMless microcontroller operating at 20 MHz and packaged in a 144-LQFP configuration measuring 20 mm by 20 mm. The verified distributor listing identifies the related MC68331CPV20B1 as a CPU32 microcontroller with the same 20 MHz speed and 144-LQFP package. The MC68331 belongs to Motorola's CPU32 family and is designed for embedded control systems that require a 32-bit processor architecture, external memory support, and deterministic peripheral operation. What is a 32-bit ROMless microcontroller? A ROMless microcontroller is a microprocessor or microcontroller device whose program memory is not provided internally. Instead, the system designer connects the device to external memory, allowing firmware size and storage technology to be selected for the application. In the broader semiconductor hierarchy, the MC68331 is a microcontroller, embedded processor, CPU32-family device, and semiconductor component used to combine control logic, memory access, and peripheral interfaces. The verified information confirms a 20 MHz operating speed, ROMless configuration, and 144-LQFP package for the MC68331 family. These characteristics make the device relevant to industrial controllers, embedded instrumentation, communications equipment, and legacy control platforms. The part number suffix CPV20 identifies the package and ordering configuration, but the supplied data does not provide complete electrical limits, memory sizes, peripheral inventory, temperature range, or timing parameters. Those values must be confirmed in the manufacturer datasheet before a new design is released. The CPU32 architecture is significant for systems that benefit from 32-bit register-oriented processing while retaining a conventional external-memory interface. Because the MCU is ROMless, boot code, application firmware, constants, and data storage must be provided externally. Designers should account for address decoding, memory timing, reset behavior, interrupt requirements, and input/output loading during PCB implementation. Typical implementation uses external program memory and carefully designed address, data, control, and peripheral lines. A 20 MHz operating rate should be evaluated against the memory and peripheral timing requirements rather than assumed to be sufficient for every workload. Signal-integrity, grounding, decoupling, and clock-routing practices remain essential in a high-pin-count LQFP implementation. This data page is limited to verified public information and does not infer unavailable electrical specifications. Before purchasing MC68331CPV20, verify the exact package, pinout, memory interface, operating temperature, lifecycle status, and firmware requirements with the manufacturer datasheet or an authorized distributor. The distinction between MC68331CPV20 and the verified MC68331CPV20B1 ordering suffix should also be confirmed before substitution. This page consolidates the verified distributor descriptions, package information, sourcing links, application considerations, and uncertainty notes for MC68331CPV20. It is intended to support engineering research and procurement planning, not to replace the complete manufacturer datasheet or a formal PCB design review.

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MC68331CPV20B1 - 32-Bit 20MHz ROMless MCU | Motorola
MC68331CPV20B1

MC68331CPV20B1 - 32-Bit 20MHz ROMless MCU | Motorola

The Motorola MC68331CPV20B1 is a 32-bit, 20 MHz, ROMless CPU32 microcontroller packaged in a 144-LQFP measuring 20 mm by 20 mm. It is designed for embedded control systems requiring a high-performance processor and externally supplied program memory. The verified distributor listing identifies the device as a CPU32 microcontroller with a 20 MHz clock and ROMless architecture. What is a ROMless microcontroller? A ROMless microcontroller is a microprocessor or microcontroller that contains a CPU core and peripherals but does not include its application program in an internal ROM. External memory supplies the firmware, allowing program size and memory technology to be selected independently of the MCU. In the system hierarchy, the MC68331 belongs to the microcontroller, embedded processor, and semiconductor categories, while its CPU32 core connects it to Motorola embedded-control products. The 32-bit architecture and 20 MHz operating frequency are the principal verified performance characteristics. ROMless operation is useful when firmware must be updated, when several products can share one processor platform, or when external memory must provide the required capacity. The 144-LQFP package provides a substantial pin count for processor signals, buses, interrupts, timers, serial interfaces, and other embedded-system connections, although the complete pin assignments are not present in the supplied verified data. The device is suitable for industrial control, communications equipment, data acquisition, instrumentation, embedded gateways, and legacy CPU32 designs when a 20 MHz embedded controller and external program memory are acceptable. Compared with a microcontroller containing integrated flash, the ROMless approach shifts memory implementation to the board designer and can simplify large-program or field-update architectures. The trade-off is that the external memory interface, address decoding, and memory timing become part of the system design. Before placing the part, verify the manufacturer datasheet for electrical limits, clock requirements, memory-interface timing, reset behavior, and the complete 144-pin pinout. The supplied search data confirms availability, pricing, package information, and core specifications, but does not provide a complete official electrical table or a verified pin mapping. Do not infer those values from the package name alone. This product page consolidates the verified distributor description, source links, pricing data, and engineering cautions for the MC68331CPV20B1. It also documents where external memory, clock design, PCB routing, and legacy software compatibility require further verification before production release.

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MC68332 - 32-Bit Modular MCU CPU32 25MHz | NXP/Freescale
MC68332

MC68332 - 32-Bit Modular MCU CPU32 25MHz | NXP/Freescale

The NXP (formerly Motorola/Freescale) MC68332 is a highly-integrated 32-bit modular microcontroller built around the CPU32 core, operating at up to 25 MHz, and housed in a 132-pin PQFP package (with the die also offered in 144-QFP and other variants). It combines high-performance 32-bit data manipulation with powerful on-chip peripherals and is designed for automotive and industrial real-time control. A 32-bit modular microcontroller is a type of microprocessor that pairs a 32-bit CPU core with configurable on-chip peripheral modules (timers, serial, memory) that communicate over an internal bus. Within the system hierarchy, the MC68332 sits as: microcontroller -> embedded MCU -> 32-bit MCU -> automotive MCU -> Motorolla 68k family -> ColdFire successor. It belongs to the broader category of microcontrollers (MCU) and semiconductor ICs, targeting real-time embedded control where deterministic timer I/O and robust serial communication are required. Key features of the MC68332 include the CPU32 core (a 68020-derived 32-bit processor with 32-bit internal architecture), an integrated Time Processing Unit (TPU) for microsecond-resolution I/O timing without CPU intervention, a Queued Serial Module (QSM) supporting SPI and SCI/UART, a System Integration Module (SIM) with chip-select logic and clock generation, 2 KB of internal SRAM, and ROMless operation requiring external program memory. Variants ship in PQFP-132 packages (typical pinout 24.13 mm x 24.13 mm body). Architecturally, the MC68332 uses a von Neumann-style common intermodule bus (IMB) connecting the CPU32, TPU, QSM, SIM, and external memory interface. The CPU32 retains the M68000 instruction set with extensions for bus sizing and improved multiply/divide. The TPU is a microcoded state-machine peripheral that can execute complex timing sequences independently, freeing the CPU for application code. Versions such as MC68332ACEH25 (25 MHz, PQFP-132) and MC68332GCEH25 (25 MHz, PQFP-132) reflect different speed grades and screening levels. Typical applications include automotive engine control units (ECUs), industrial servo drives, printer/copier controllers, medical instrumentation, and any real-time embedded system needing deterministic I/O timing. The TPU makes the part particularly well suited to ignition timing, injection control, PWM-driven motor control, and similar time-critical loops where software jitter is unacceptable. A key design consideration when migrating or sourcing the MC68332 is its current End-of-Life (EOL) status - it is not recommended for new designs. For new designs, NXP suggests migrating to the ColdFire or MCX A series. Designers maintaining legacy systems should consult the MC68332 Technical Summary for bus timing, TPU microcode programming, and external-memory interface requirements; pay particular attention to the SIM chip-select configuration registers and the external bus arbitration logic. This page synthesizes distributor stock from DigiKey, manufacturer technical summary from NXP, and design guidance not found in any single source to help engineers evaluate, source, and design with the MC68332 family.

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MC68332ACAG25 - 32-bit 25MHz CPU32 MCU, 144-LQFP | NXP
MC68332ACAG25

MC68332ACAG25 - 32-bit 25MHz CPU32 MCU, 144-LQFP | NXP

The NXP (formerly Freescale) MC68332ACAG25 is a 32-bit highly-integrated microcontroller from the M68300 (CPU32) family that combines a 25 MHz CPU32 core, 2 KB on-chip SRAM, a 16-bit Time Processing Unit (TPU), a Queued Serial Module (QSM), and a System Integration Module (SIM) on a single die, housed in a 144-pin LQFP (20x20 mm) package. Key features include a 25 MHz CPU32 core with 32-bit data and address paths, 2 KB of on-chip SRAM, a programmable 16-channel TPU for complex timing, and a QSM that provides both queued SPI and SCI/UART channels. The device is ROMless, requiring external program memory, and supports a 5 V supply. Industrial-grade parts are specified for -40C to +85C operation, while automotive AEC-Q100 parts (suffix VAG) span -40C to +125C. The MC68332 belongs to the M68300 microcontroller family, a 32-bit evolution of the 68000 architecture. It is built from standard modules communicating over a common Intermodule Bus (IMB), which lets designers add peripherals like the CAN module (MC68376) or enhanced TPU (MC68333) by family upgrade. Architecturally, the CPU32 core is binary-compatible with the 68000 instruction set and adds multiply/accumulate instructions for DSP-like workloads. Typical applications include automotive body and chassis ECUs (via the VAG/AEC-Q100 variants), industrial motion and motor controllers that exploit the TPU, CAN-enabled networked sensors via QSM, and embedded control requiring a deterministic real-time executive. The ROMless design is favored when designers want a single MCU platform populated with custom boot firmware or when field upgradability via external flash is required. When designing with the MC68332, plan for a minimum external bus cycle of 4 clocks at 25 MHz (160 ns) and ensure the VCO-based clock generator is configured per the datasheet for stable operation. For new production, prefer the VAG25 (AEC-Q100) or the newer ColdFire successors because the ACAG25 industrial variant is being discontinued by NXP. This page consolidates distributor pricing, parameter-based drop-in alternatives, and practical design notes not available from the manufacturer datasheet alone, helping engineers evaluate lifecycle risk and pin-compatible replacements for legacy designs.

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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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