NXP Semiconductors MCF52258CAG66R

Overview

MCF52258CAG66R from NXP (formerly Freescale) is a 32-bit ColdFire V2 RISC microcontroller designed for industrial control and connectivity applications. It operates at up to 66 MHz (63 MIPS), integrates 512 KB flash, 64 KB SRAM, FlexCAN 2.0B, USB OTG, Fast Ethernet controller (FEC), and an 8-channel 12-bit ADC with simultaneous sampling - enabling real-time motor control and networked embedded systems.

For engineers reviewing the MCF52258CAG66R datasheet, MCF52258CAG66R pinout, MCF52258CAG66R application, or MCF52258CAG66R equivalent, key selection considerations include its 144-pin LQFP package, 66 MHz system clock, dual 12-bit ADC with synchronized sampling, Mini-FlexBus interface, and support for deterministic CAN 2.0B communication in harsh environments.

Technical Context

The MCF52258CAG66R implements the ColdFire V2 core with ISA_A+ instruction set, enhanced MAC unit, and cryptographic acceleration unit (CAU) supporting AES, DES, MD5, and SHA-1. Its tightly coupled architecture enables 63 MIPS at 66 MHz with static operation and low-power sleep modes.

It features dual-bus memory subsystems: 512 KB interleaved flash with backdoor programming via EzPort, and 64 KB dual-ported SRAM accessible by CPU, DMA, FEC, and USB - enabling zero-wait-state execution and efficient buffer sharing in real-time data pipelines.

Key Specifications

Pinout & Package

The MCF52258CAG66R is housed in a 144-pin LQFP package (20 mm × 20 mm, 0.5 mm pitch), supporting full peripheral visibility including Mini-FlexBus, USB OTG transceiver pins, FEC RMII/MII interface, and dual ADC sample-and-hold trigger inputs (SYNCA/SYNCB).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCF52259CAG80, the MCF52258CAG66R trades 14 MIPS for lower power and thermal footprint while retaining identical peripheral set and 144-LQFP compatibility; versus K66F18M180, it delivers integrated FEC and FlexCAN without external PHY or CAN transceiver, reducing BOM count and board area in industrial networking nodes.

Availability

MCF52258CAG66R is available at Aetrix Electronics and suitable for industrial motor control, building automation gateways, medical diagnostic equipment, and energy metering systems requiring stable component supply and long-term lifecycle support.

Supply support for MCF52258CAG66R 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 deep heritage in microcontroller innovation through its acquisition of Freescale.

The MCF52258CAG66R belongs to the ColdFire V2 microcontroller product line, engineered for deterministic real-time control in electrically noisy industrial environments where integrated CAN, Ethernet, and precision analog subsystems reduce system complexity.

FAQ

What is the maximum operating frequency of the MCF52258CAG66R?

The MCF52258CAG66R is rated for a maximum system clock frequency of 66 MHz, delivering 63 MIPS (Dhrystone 2.1) performance. This frequency is achieved using the on-chip PLL with an external crystal or oscillator input. The peripheral bus runs at up to 40 MHz, ensuring timing compliance for USB OTG, FEC, and Mini-FlexBus interfaces. The MCF52258CAG66R does not support the 80 MHz grade - that is reserved for the MCF52259CAG80 variant.

Does the MCF52258CAG66R include an integrated Ethernet MAC?

Yes, the MCF52258CAG66R integrates a Fast Ethernet Controller (FEC) compliant with IEEE 802.3 for 10/100 Mbps operation. It supports both MII and RMII physical layer interfaces and includes on-chip transmit/receive FIFOs and a dedicated DMA controller. An external PHY is required for media connection, but no external MAC logic is needed - the FEC handles frame assembly, CRC generation, and collision handling internally.

Can the MCF52258CAG66R perform simultaneous sampling on its ADC channels?

Yes, the MCF52258CAG66R's 8-channel 12-bit ADC supports true simultaneous sampling using two independent sample-and-hold circuits. Trigger signals on SYNCA and SYNCB pins initiate concurrent conversions on paired channels (e.g., AN0/AN1 or AN4/AN5), essential for vector control in 3-phase motor drives. This capability is confirmed in the MCF52259 datasheet Table 1 and Section 1.2.15, which applies identically to the MCF52258CAG66R.

Is the Mini-FlexBus interface available on the MCF52258CAG66R?

Yes, the Mini-FlexBus external bus interface is fully implemented on the MCF52258CAG66R and is available exclusively on 144-pin packages like the LQFP variant. It provides glueless 8-bit or 16-bit (multiplexed) expansion with two chip selects, programmable base address/size/wait states, and support for up to 40 MHz bus clock in 1:2 mode - enabling direct connection to NOR flash, SRAM, or FPGA peripherals without address latches or glue logic.

What cryptographic functions are accelerated by the CAU in the MCF52258CAG66R?

The Cryptographic Acceleration Unit (CAU) in the MCF52258CAG66R hardware-accelerates symmetric encryption and hash operations including DES, 3DES, AES (all key lengths), MD5, and SHA-1. These functions execute in fewer cycles than software-only implementations, reducing CPU load and improving throughput for secure boot, firmware signing, and encrypted communications. The CAU is documented in Section 1.2.6 of the MCF52259 datasheet and applies identically to the MCF52258CAG66R.