NXP Semiconductors MC68340CFE25E

Overview

MC68340CFE25E from Motorola (now NXP/Freescale) is a 32-bit integrated processor with CPU32 core, dual-channel DMA, two USARTs, and system integration module - operating at up to 25.16 MHz, supporting 32-bit addressing and 16-bit data bus, used in CD-I players and embedded control systems requiring high-speed block transfers and low-power operation.

For engineers reviewing the MC68340CFE25E datasheet, MC68340CFE25E pinout, MC68340CFE25E application, or MC68340CFE25E equivalent, this page delivers verified technical context, exact pin roles, real-world use cases, and validated alternative parts for industrial embedded design, multimedia player development, and legacy M68k-based system maintenance.

Technical Context

The MC68340CFE25E integrates a CPU32 core derived from the MC68020 architecture - delivering 4 MIPS (VAX-equivalent) at 25.16 MHz, full object-code compatibility with MC68000/MC68010, and embedded control instructions including low-power STOP. Its intermodule bus (IMB) synchronizes CPU32, DMA, and peripherals without external arbitration delays.

It features a SIM40 system integration module handling external bus interface (32 address/16 data lines), programmable chip selects, IEEE 1149.1 JTAG boundary scan, power-on reset, and watchdog timing - eliminating discrete glue logic. The dual-channel DMA supports single- or dual-address transfers at up to 50 MB/s (single-address mode @ 25.16 MHz) with 32-bit counters and 8/16/32-bit data widths.

Key Specifications

Pinout & Package

MC68340CFE25E uses a 144-pin Ceramic Quad Flat Pack (CQFP) with gull-wing leads and 0.65 mm pitch. Pin functions are defined by multiplexed signal groups including address/data bus, interrupt request lines, serial I/O, timer I/O, DMA control, and JTAG test interface.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC68340CFE25E, MC68332ACFPE16 trades DMA capability and CD-I qualification for lower cost and smaller package, while MC68360ENxxL shifts focus to communications acceleration over general-purpose embedded control - making MC68340CFE25E uniquely balanced for multimedia and mixed-signal real-time systems requiring both compute and high-speed data movement.

Availability

MC68340CFE25E is available at Aetrix Electronics and suitable for CD-I player manufacturing, industrial motion control systems, telecom protocol gateways, and legacy embedded data loggers requiring stable component supply across extended product lifecycles.

Supply support for MC68340CFE25E includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Motorola Semiconductor (now part of NXP Semiconductors via Freescale acquisition) pioneered high-integration microcontrollers for industrial and multimedia applications in the 1990s.

The MC68340CFE25E belongs to the M68300 family - designed to replace multi-chip M68000-based systems with a single IC offering CPU, DMA, timers, serial I/O, and system glue logic for embedded control and CD-I platforms.

FAQ

What is the maximum operating frequency of the MC68340CFE25E?

The MC68340CFE25E is rated for operation up to 25.16 MHz, as confirmed in the official Motorola product brief and frequency availability table. This speed enables 10,045 Dhrystone/sec performance and supports 50 MB/s DMA throughput in single-address mode. It operates within the 0°C to +70°C commercial temperature range and requires a 5.0 V ±5% supply - distinct from the 3.3 V MC68340V variants.

Is the MC68340CFE25E pin-compatible with other M68300 family members like the MC68332?

No, the MC68340CFE25E is not pin-compatible with the MC68332 or other M68300 family members. It uses a 144-pin Ceramic Quad Flat Pack (CQFP), whereas the MC68332ACFPE16 uses a 112-pin Plastic Quad Flat Pack (PQFP). Signal mapping, power pin distribution, and peripheral I/O assignments differ significantly across the family - requiring unique PCB layouts for each part.

Does the MC68340CFE25E support IEEE 1149.1 boundary scan testing?

Yes, the MC68340CFE25E includes full IEEE 1149.1 (JTAG) boundary scan test logic as part of its System Integration Module (SIM40). Pins TCK, TMS, TDI, and TDO are dedicated to this function and appear in the official pinout diagram. This capability enables in-circuit testing, fault isolation, and production verification without requiring physical probe access to internal nodes.

What type of memory interface does the MC68340CFE25E provide?

The MC68340CFE25E provides a 32-bit address bus (A23–A0 shown explicitly; full 32-bit addressing supported via internal expansion) and a 16-bit data bus (D15–D0), compatible with the MC68030 bus architecture. It supports dynamic bus sizing for 8- or 16-bit memory accesses, programmable wait states, four chip selects with configurable base addresses and masks, and synchronous transfers in as few as two clock cycles - all managed by the SIM40 module.

Can the MC68340CFE25E be used in new designs today?

Yes, the MC68340CFE25E remains viable for new designs where long-term availability, proven reliability, and M68k ecosystem compatibility are priorities - especially in industrial, defense, or medical legacy-replacement applications. Aetrix Electronics maintains active inventory and supply-chain continuity support, including traceable sourcing and lifecycle coordination, ensuring access beyond typical end-of-life timelines for this mature but qualified component.