NXP Semiconductors MCF5206EAB40

Overview

MCF5206EAB40 from Freescale Semiconductor is a Version 2 ColdFire® integrated microprocessor with a 54 MHz CPU core, 4 KB instruction cache, 8 KB on-chip SRAM, MAC unit, hardware divide, and dual-channel DMA-designed for embedded control systems requiring deterministic real-time performance in industrial automation and communications equipment.

For engineers reviewing the MCF5206EAB40 datasheet, MCF5206EAB40 pinout, MCF5206EAB40 application, or MCF5206EAB40 equivalent, key selection considerations include its 208-pin QFP package, 3.3 V core/5 V tolerant I/O, DRAM controller support for EDO/page-mode DRAM, and pin-compatibility with the MCF5206 for drop-in upgrades.

Technical Context

The MCF5206EAB40 implements a fully static Version 2 ColdFire core with synthesizable RTL, enabling deterministic timing across 0°–70°C operation at 54 MHz. Its architecture integrates tightly coupled peripherals including a DRAM controller with chip-select logic, dual UARTs with synchronous/asynchronous modes, and two 16-bit multimode timers with input capture/output compare capability.

System-level integration includes an I²C-compatible bus interface, JTAG debug support, and a bus controller supporting glueless interfacing to 8-/16-/32-bit DRAM, SRAM, and I/O devices. The 0.35 µm TLM process enables low-power 3.3 V operation while maintaining 5 V tolerance on all I/O pins.

Key Specifications

Pinout & Package

Package: 208-pin plastic quad flat pack (QFP), 28 × 28 mm body, 0.65 mm lead pitch, RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCF5206EAB40, the MCF5206ECB40 offers wider temperature tolerance at reduced frequency, while the MCF5208EC delivers significantly higher performance and modern peripherals-but requires PCB redesign due to different package and pinout.

Availability

MCF5206EAB40 is available at Aetrix Electronics and suitable for industrial automation, communications gateway, and motor control applications requiring stable component supply and long-term lifecycle support.

Supply support for MCF5206EAB40 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, known for the ColdFire, PowerQUICC, and Kinetis families.

The MCF5206EAB40 belongs to the ColdFire V2 microprocessor family, engineered to deliver cost-effective, high-MIPS embedded control with seamless migration from 68K architectures for industrial and networking applications.

FAQ

What is the maximum operating frequency of the MCF5206EAB40?

The MCF5206EAB40 operates at a maximum frequency of 54 MHz, delivering 50 Dhrystone 2.1 MIPS. This rating is validated for commercial temperature range (0° to 70°C). At 40 MHz, it supports extended temperature operation from –40° to 85°C. The device uses a fully static core, allowing clock throttling or stopping without data loss.

Does the MCF5206EAB40 support external DRAM, and what types are compatible?

Yes, the MCF5206EAB40 includes an integrated DRAM controller supporting EDO (Extended Data Out) and page-mode DRAMs. It provides dedicated address multiplexing, RAS/CAS control, and dynamic refresh timing-eliminating need for external DRAM interface logic. SDRAM is not supported; only asynchronous DRAM types compliant with JEDEC standards for those modes are compatible with the MCF5206EAB40.

Is the MCF5206EAB40 pin-compatible with earlier ColdFire microprocessors?

Yes, the MCF5206EAB40 is pin-compatible with the original MCF5206 microprocessor, sharing the same 208-pin QFP package and signal mapping. This allows direct board-level replacement without layout changes. However, it is not pin-compatible with later ColdFire generations like the MCF5208 or MCF5225, which use different packages and peripheral sets.

What debug interfaces does the MCF5206EAB40 provide?

The MCF5206EAB40 includes IEEE 1149.1 JTAG boundary-scan support for silicon validation and board-level testing, plus a dedicated background debug mode (BDM) interface for real-time firmware debugging, breakpoint insertion, and memory inspection. These interfaces are accessible via standard ColdFire BDM pods and are fully supported by CodeWarrior development tools for the MCF5206EAB40.

Can the MCF5206EAB40 execute 68K assembly code directly?

No, the MCF5206EAB40 executes ColdFire V2 instruction set, which is a subset and superset of the 68K ISA-not binary compatible. However, Freescale provided free code translation tools under license to convert 68K assembly to ColdFire assembly, and most C toolchains support both architectures with minimal source modification. Legacy 68K object code cannot run natively on the MCF5206EAB40.