NXP Semiconductors MCF52255CAF80

Overview

MCF52255CAF80 from NXP (formerly Freescale) is a 32-bit ColdFire V2 RISC microcontroller designed for industrial control and connectivity applications. It features an 80 MHz CPU core delivering 76 MIPS, 512 KB on-chip flash memory, 64 KB SRAM, integrated FlexCAN 2.0B, USB OTG, Fast Ethernet controller (FEC), and an eight-channel 12-bit ADC with simultaneous sampling - enabling real-time motor control and networked embedded systems.

For engineers reviewing the MCF52255CAF80 datasheet, MCF52255CAF80 pinout, MCF52255CAF80 application, or MCF52255CAF80 equivalent, key selection considerations include its 144-pin LQFP package, Mini-FlexBus interface availability, CAU cryptographic acceleration support, and dual watchdog timers for safety-critical firmware execution.

Technical Context

The MCF52255CAF80 implements the ColdFire V2 core with ISA_A+ instruction set, including hardware EMAC unit and CAU coprocessor for DES/3DES/AES/MD5/SHA-1 acceleration. Its clock system integrates an on-chip 8 MHz relaxation oscillator, PLL, and external crystal support, enabling configurable system clocks up to 80 MHz and peripheral bus clocks up to 40 MHz.

It integrates dual debug interfaces: BDM for in-circuit debugging and IEEE 1149.1 JTAG for boundary-scan testing. The device supports full static operation with multiple low-power modes, including sleep and stop, and includes two independent watchdog timers - one software-controlled 32-bit WDT and one backup 16-bit BWT with separate clock domain.

Key Specifications

Pinout & Package

Package: 144-pin LQFP (20 mm × 20 mm), RoHS-compliant, surface-mount. Pinout validated per Freescale MCF52259 Rev. 5 datasheet, applicable to MCF52255CAF80 as confirmed in Table 1 "MCF52259 Family Configurations".

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCF52255CAF80, MCF52259CAG80 offers identical functionality in a smaller footprint but requires BGA rework capability, while K64F120M provides higher CPU performance and ARM ecosystem advantages at the cost of losing native Mini-FlexBus and CAU acceleration - making MCF52255CAF80 optimal for cost-sensitive, CAN/Ethernet-centric industrial upgrades.

Availability

MCF52255CAF80 is available at Aetrix Electronics and suitable for industrial motor control, building automation gateways, and secure IoT edge nodes requiring stable component supply, long-lifecycle support, and verified cold-temperature operation.

Supply support for MCF52255CAF80 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

NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT markets, with roots in Freescale's embedded processor heritage.

The MCF52255CAF80 belongs to the ColdFire V2 microcontroller family, engineered for deterministic real-time control in harsh environments - emphasizing integrated CAN/Ethernet, cryptographic acceleration, and low-power reliability for industrial edge applications.

FAQ

What is the maximum operating frequency of the MCF52255CAF80 CPU core?

The MCF52255CAF80 CPU core operates at up to 80 MHz, delivering 76 MIPS (Dhrystone 2.1) when executing from internal flash memory. This frequency is achieved using the integrated PLL with external crystal or on-chip relaxation oscillator input, and is confirmed in Table 1 of the MCF52259 datasheet Rev. 5 for the MCF52255 variant.

Does the MCF52255CAF80 support hardware cryptographic acceleration?

Yes, the MCF52255CAF80 includes a Cryptographic Acceleration Unit (CAU) that accelerates DES, 3DES, AES, MD5, and SHA-1 operations in hardware. This coprocessor is tightly coupled to the ColdFire V2 core and reduces encryption latency significantly compared to software-only implementations - a feature explicitly enabled in the MCF52255 configuration per Table 1.

Is Mini-FlexBus available on the MCF52255CAF80?

Yes, Mini-FlexBus is available on the MCF52255CAF80. As confirmed in Table 1 of the MCF52259 datasheet Rev. 5, the MCF52255 variant supports the Mini-FlexBus external bus interface - but only on 144-pin packages such as the LQFP used in MCF52255CAF80. It supports glueless interfacing to 8-bit ROM/flash/SRAM with programmable wait states.

What ADC capabilities does the MCF52255CAF80 provide?

The MCF52255CAF80 integrates an eight-channel 12-bit fast ADC with simultaneous sampling on two channels, minimum 1.125 µs conversion time, and flexible triggering (single-scan, continuous, or event-driven). These specifications are identical across the MCF5225x family and confirmed for MCF52255 in Section 1.2.15 and Table 1 of the datasheet.

What debug interfaces are supported by the MCF52255CAF80?

The MCF52255CAF80 supports both Background Debug Mode (BDM) and IEEE 1149.1 JTAG interfaces. The full debug/trace capability - including six hardware breakpoints and real-time trace - is available on 144-pin packages like the MCF52255CAF80, as stated in Section 1.2.3 and 1.2.4 of the MCF52259 datasheet Rev. 5.