NXP Semiconductors MCF5206FT16A

Overview

MCF5206FT16A from Freescale Semiconductor (formerly Motorola) is a ColdFire V2 32-bit integrated microprocessor with on-chip 4 KB instruction cache, 8 KB SRAM, DRAM controller, dual UART, and timer modules. It operates at 16 MHz, supports 32-bit data/28-bit address bus, and targets embedded control in industrial automation and communications equipment.

For engineers reviewing the MCF5206FT16A datasheet, MCF5206FT16A pinout, MCF5206FT16A application, or MCF5206FT16A equivalent, key selection criteria include its integrated memory subsystem, external bus interface timing, interrupt controller architecture, and ColdFire V2 ISA compatibility for legacy M68K migration paths.

Technical Context

The MCF5206FT16A implements the ColdFire V2 core with a three-stage pipeline, supporting byte/word/longword addressing and supervisor/user privilege modes. Its System Integration Module (SIM) integrates interrupt control, software watchdog, bus timeout monitoring, and pin assignment logic.

Bus operation includes asynchronous and burst transfer modes with programmable chip-select timing, size-selectable (8/16/32-bit) data transfers, and full support for external DRAM via dedicated RAS/CAS signals and DRAMW control. The dual UART supports RS-232/RS-485 framing with RTS/CTS flow control.

Key Specifications

Pinout & Package

Package: 160-pin Plastic Quad Flat Package (PQFP), 28 mm × 28 mm body, 0.65 mm lead pitch, JEDEC MS-026AC compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCF5206FT16A, the MCF5206EM32 offers higher clock speed within identical packaging and peripheral compatibility, while the MCF5208VFAE adds USB/Ethernet at the cost of pinout change and increased complexity-making the MCF5206FT16A optimal for cost-sensitive, thermally constrained industrial control where legacy M68K migration and minimal external components are priorities.

Availability

MCF5206FT16A is available at Aetrix Electronics and suitable for industrial PLC controllers, point-of-sale terminals, and medical diagnostic instrument controllers requiring stable component supply and long-term obsolescence management.

Supply support for MCF5206FT16A 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

Freescale Semiconductor (now part of NXP Semiconductors) was a leading designer of embedded processors and analog/mixed-signal ICs, founded in 2004 as a spin-off from Motorola's semiconductor division.

The MCF5206FT16A belongs to the ColdFire V2 microprocessor family, designed specifically for cost-optimized, low-power embedded control applications requiring M68K software compatibility, integrated memory, and flexible peripheral connectivity without external bus logic.

FAQ

What is the maximum operating frequency of the MCF5206FT16A?

The MCF5206FT16A is factory-specified and tested for stable operation at 16 MHz. This frequency defines its instruction throughput, bus timing budgets, and peripheral clock derivation. Exceeding this rating may cause timing violations in external memory accesses or UART baud rate accuracy, and is not supported by Freescale's characterization data or qualification testing. The MCF5206FT16A does not include an internal PLL, so system clock must be provided externally at exactly 16 MHz.

Does the MCF5206FT16A include on-chip flash memory?

No, the MCF5206FT16A does not include on-chip flash memory. It features 4 KB of instruction cache and 8 KB of SRAM, but program storage relies entirely on external non-volatile memory such as parallel NOR flash or EPROM connected via its 32-bit data bus and 28-bit address bus. Boot code must be fetched from external memory starting at the reset vector address, and the MCF5206FT16A provides no internal flash programming circuitry or security features for embedded code storage.

Can the MCF5206FT16A directly interface with standard SDRAM chips?

No, the MCF5206FT16A cannot directly interface with standard SDRAM chips. Its DRAM controller is designed exclusively for asynchronous DRAM (e.g., 256K×16, 1M×16) using RAS[1:0], CAS[3:0], and DRAMW signals. SDRAM requires precise clocked command sequences (ACTIVATE/PRECHARGE/READ/WRITE), DLL-based timing, and mode register setup - none of which are supported by the MCF5206FT16A's DRAM controller. External logic or a dedicated SDRAM controller IC would be required to use SDRAM with the MCF5206FT16A.

What debug interfaces are supported by the MCF5206FT16A?

The MCF5206FT16A supports IEEE 1149.1 JTAG boundary-scan testing and real-time in-circuit debugging via its five-pin TAP interface (TCK, TMS, TDI, TDO, TRST). It also includes a dedicated debug serial interface (DSCLK, DSI, DSO, BKPT) for use with Freescale's BDM (Background Debug Mode) protocol, enabling breakpoints, register inspection, and memory read/write without halting real-time peripheral operation. Both interfaces are electrically compatible with standard Freescale ColdFire development tools.

Is the MCF5206FT16A pin-compatible with other ColdFire family members?

The MCF5206FT16A is pin-compatible only with other members of the MCF5206 family (e.g., MCF5206EM32, MCF5206E), sharing identical 160-pin PQFP packaging, signal naming, and pin functions. It is not pin-compatible with ColdFire V3/V4 derivatives (e.g., MCF5223x, MCF5225x) or later generations, which use different package types, pin counts, and peripheral mappings. Migration within the MCF5206 family requires only clock and timing adjustments; migration to newer ColdFire families necessitates full PCB redesign.