NXP Semiconductors MCF52258CVN66

Overview

MCF52258CVN66 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, a Fast Ethernet controller (FEC), FlexCAN 2.0B, USB OTG, and an 8-channel 12-bit ADC with simultaneous sampling - enabling real-time motor control and networked embedded systems.

For engineers reviewing the MCF52258CVN66 datasheet, MCF52258CVN66 pinout, MCF52258CVN66 application, or MCF52258CVN66 equivalent, key selection considerations include its 144-pin LQFP package, 66 MHz system clock option, Mini-FlexBus interface availability, dual watchdog timers, and CAU-accelerated cryptographic operations for secure firmware updates and device authentication.

Technical Context

The MCF52258CVN66 implements the ColdFire V2 core with ISA_A+ instruction set, enhanced MAC unit, and hardware divider - delivering deterministic 63 MIPS at 66 MHz from internal flash. Its tightly coupled architecture supports real-time interrupt response with 57 configurable sources and dual watchdog timers (software + independent backup).

On-chip peripherals include a full-featured FEC supporting 10/100 BaseT/TX, FlexCAN 2.0B with 16 message buffers, and a dual-S/H 12-bit ADC capable of simultaneous two-channel sampling - all synchronized via dedicated trigger pins (SYNCA/SYNCB) for precise timing in closed-loop control systems.

Key Specifications

Pinout & Package

The MCF52258CVN66 is housed in a 144-lead LQFP package (20 mm × 20 mm, 0.5 mm pitch), supporting Mini-FlexBus, JTAG/BDM debug, and full peripheral pinout including FEC RMII/MII signals, CAN TX/RX, USB DP/DM, and dedicated ADC trigger inputs (SYNCA/SYNCB).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCF52259CVN80, the MCF52258CVN66 trades 14 MIPS for lower power and cost while retaining identical feature set and pin compatibility; versus K64F120M, it provides native FlexBus and CAU at the expense of ARM ecosystem maturity and FPU capability.

Availability

MCF52258CVN66 is available at Aetrix Electronics and suitable for industrial motor control, building automation gateways, and secure IoT edge nodes requiring stable component supply, long-term lifecycle assurance, and qualified sourcing for production programs.

Supply support for MCF52258CVN66 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 MCF52258CVN66 belongs to the ColdFire V2 microcontroller product line, engineered for deterministic real-time control in resource-constrained industrial environments requiring integrated networking, analog acquisition, and hardware security acceleration.

FAQ

What is the maximum operating frequency of the MCF52258CVN66?

The MCF52258CVN66 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 locked to an external crystal or the internal 8 MHz relaxation oscillator. The device does not support the 80 MHz grade - that is exclusive to the MCF52259CVN80 variant. All timing-critical peripherals, including the FEC and ADC, are fully functional at 66 MHz with documented setup/hold margins.

Does the MCF52258CVN66 include a hardware cryptographic accelerator?

Yes, the MCF52258CVN66 includes the Cryptographic Acceleration Unit (CAU), a tightly coupled coprocessor that accelerates DES, 3DES, AES, MD5, and SHA-1 operations. This unit operates independently of the ColdFire V2 core and is accessed via memory-mapped registers. The CAU significantly reduces firmware signature verification time during secure boot and enables efficient OTA update decryption - confirmed in Section 1.2.6 of the MCF52259 datasheet, which applies identically to the MCF52258CVN66.

Is the Mini-FlexBus interface available on the MCF52258CVN66?

Yes, the Mini-FlexBus external bus interface is available on the MCF52258CVN66, but only in the 144-pin LQFP and 144 MAPBGA packages - not in the 100-pin variant. It supports glueless connection to 8-bit ROM/flash/SRAM with programmable base address, size, and wait states. The interface operates at up to 40 MHz in 1:2 mode (using bus clock) and is fully documented in Section 2.10 of the MCF52259 datasheet, applicable to this part per Family Configurations Table 1.

What ADC capabilities does the MCF52258CVN66 provide?

The MCF52258CVN66 features an 8-channel, 12-bit fast ADC with simultaneous sampling on two channels using dedicated SYNCA and SYNCB trigger inputs. Minimum conversion time is 1.125 µs, and it supports single-scan, continuous, or triggered operation. Unused analog channels can be reconfigured as GPIO. These specifications are verified in Section 2.15 (ADC Parameters) and Section 1.2.15 (Fast ADC) of the MCF52259 datasheet, which covers the entire family including MCF52258CVN66.

Can the MCF52258CVN66 operate in low-power modes while maintaining RTC and watchdog functionality?

Yes, the MCF52258CVN66 supports multiple low-power modes including stop, wait, and doze, with the RTC module continuing to run from the 32.768 kHz crystal on Vstby supply and both software and backup watchdog timers remaining active. The backup watchdog timer uses an independent clock source and retains functionality in all low-power states except full stop mode with VDD disabled. This behavior is specified in Sections 1.2.7 (Power Management) and 1.2.18 (RTC) of the MCF52259 datasheet, applicable to MCF52258CVN66.