NXP Semiconductors MC68340FT16E

Overview

MC68340FT16E from Motorola is a 32-bit integrated processor with CPU32 core, dual-channel 32-bit DMA, two USARTs, and system integration module (SIM40), operating at up to 16.78 MHz on a 5 V ±5% supply in a 144-pin CQFP package. It delivers 6,742 Dhrystones/sec, supports 8-/16-/32-bit data transfers, and targets embedded control systems requiring high-speed block data movement and code compatibility with MC68000.

For engineers reviewing the MC68340FT16E datasheet, MC68340FT16E pinout, MC68340FT16E application, or MC68340FT16E equivalent, this page provides verified functional identity, validated peripheral timing, confirmed DMA throughput (12.5 MB/s memory-to-memory), exact package mapping (CQFP-144), and real-world use cases in CD-I players and industrial controllers.

Technical Context

The MC68340FT16E implements a CPU32 core derived from the MC68020 architecture, delivering full M68000 object-code compatibility while adding embedded control instructions and fast two-clock register operations. Its intermodule bus (IMB) synchronously connects CPU32, DMA, USARTs, and timers-enabling parallel arbitration and zero-wait internal transfers.

Peripheral operation is managed by the SIM40 module, which integrates external bus interface (32 address/16 data lines), programmable chip selects (up to 4 Gbyte blocks), IEEE 1149.1 boundary scan, power-on reset, and dynamic bus sizing. The DMA controller supports single- and dual-address modes with independent request/acknowledge/done signaling per channel.

Key Specifications

Pinout & Package

MC68340FT16E is housed in a 144-pin Ceramic Quad Flat Pack (CQFP) with gull-wing leads and 0.65 mm pitch, optimized for surface-mount reliability and thermal stability in embedded control applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC68340FT16E, MC68332ACFUE16 trades DMA capability for lower cost and QSM-based serial flexibility, while MC68360ZP16E shifts focus to communications-specific engines-making MC68340FT16E the optimal choice for general-purpose embedded control demanding balanced compute, I/O, and memory bandwidth.

Availability

MC68340FT16E is available at Aetrix Electronics and suitable for CD-I player manufacturing, industrial motion control systems, telecom line card development, and medical imaging subsystems requiring stable component supply and long-term obsolescence management.

Supply support for MC68340FT16E 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) was a pioneer in 32-bit embedded microprocessors and integrated controllers, known for the M68000 family and early system-on-chip architectures.

The MC68340FT16E belongs to the M68300 family of integrated processors designed for embedded control applications requiring high functional integration, M68000 software compatibility, and reduced external component count.

FAQ

What is the maximum operating frequency of the MC68340FT16E?

The MC68340FT16E is rated for operation up to 16.78 MHz at 5.0 V ±5%. This frequency determines the upper limit of instruction execution speed, timer resolution (125 ns), and sustained DMA throughput (12.5 MB/s memory-to-memory). It is not rated for 25.16 MHz operation-that specification applies only to the higher-speed MC68340 variants such as MC68340FT25E.

Does the MC68340FT16E support 32-bit data transfers?

Yes-the MC68340FT16E's DMA controller supports 32-bit data transfers in single-address mode, enabling high-speed movement of long-word data between memory and peripherals without CPU involvement. However, its external data bus remains 16-bit (D15–D0), so 32-bit transfers require two consecutive cycles unless external logic expands the bus width.

Is the MC68340FT16E pin-compatible with other MC68340 variants?

Yes-MC68340FT16E shares identical pinout and package (144-pin CQFP) with all MC68340 variants including MC68340FT25E and MC68340V series. Differences are limited to maximum clock rating, supply voltage (5 V vs. 3.3 V), and temperature grade; no PCB redesign is needed when upgrading within the same package variant.

What debug capabilities does the MC68340FT16E provide?

The MC68340FT16E includes Background Debug Mode (BDM), allowing real-time register and memory access via a dedicated full-duplex serial interface. This enables in-circuit emulation without external pod hardware, supporting breakpoint insertion, patch code execution, and live register inspection-all while the target system remains powered and functionally active.

How does the MC68340FT16E handle power management?

The MC68340FT16E implements multiple power-saving mechanisms: programmable clock throttling (131 kHz to 16.78 MHz), individual peripheral disable (5–10% savings per module), and LPSTOP instruction that reduces standby current to ~300 µW. These features are controlled entirely in software and preserve full register context during low-power states.