NXP Semiconductors MCF5482CZP166

Overview

MCF5482CZP166 from NXP Semiconductors (formerly Freescale) is a ColdFire V4e-based 32-bit microprocessor with integrated MMU, FPU, and dual 10/100 Mbps Ethernet controllers. It operates at up to 166 MHz core frequency (256 MIPS Dhrystone), supports DDR/SDR SDRAM up to 1 GB, and features a 388-pin TEPBGA package with 27 mm × 27 mm footprint. It targets industrial networking gateways requiring deterministic real-time I/O, secure communications, and Linux-capable embedded processing.

For engineers reviewing the MCF5482CZP166 datasheet, MCF5482CZP166 pinout, MCF5482CZP166 application, or MCF5482CZP166 equivalent, key selection criteria include ColdFire V4e core compatibility, 166 MHz peak operation under 1.5V core supply, DDR SDRAM controller timing at 133 MHz, FlexBus interface for legacy peripherals, and dual FlexCAN 2.0B support for automotive-grade fieldbus integration.

Technical Context

The MCF5482CZP166 implements a Harvard-architecture ColdFire V4e core with 32 KB instruction and 32 KB data caches, MMU for full virtual memory management, and IEEE-754-compliant double-precision FPU. Its system-level interconnect includes an XLB arbiter supporting split transactions between internal masters (CPU, DMA, FECs) and external memory or I/O.

Peripheral subsystems are tightly coupled: dual Fast Ethernet controllers each with 2 KB FIFOs, four PSCs supporting UART/USART/IrDA/codec modes, two FlexCAN modules with 16 message buffers each, and a programmable DSPI interface. The optional cryptography accelerator supports AES, DES/3DES, SHA-1/SHA-256, and RNG - all accessible via dedicated crypto bus.

Key Specifications

Pinout & Package

TEPBGA–388 package: 27 mm × 27 mm body, 1.27 mm ball pitch, 16 × 16 array with corner balls omitted (388 total I/O balls). Thermal pad on underside; requires solder paste stencil design per JEDEC J-STD-020.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MCF5482CZP166, the MCF5485CZP200 offers higher clock headroom within identical thermal and pin-compatible packaging, while the i.MX283 provides ARM-based scalability and security features at the cost of ColdFire-specific determinism and toolchain migration effort.

Availability

MCF5482CZP166 is available at Aetrix Electronics and suitable for industrial gateways, secure remote terminal units (RTUs), automotive diagnostic tools, and medical imaging controllers requiring stable component supply and long-lifecycle support.

Supply support for MCF5482CZP166 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 applications, with roots in Freescale's embedded processor heritage.

The MCF5482CZP166 belongs to the ColdFire V4e microprocessor family, designed specifically for high-performance, Linux-capable industrial control and networking applications where real-time determinism, memory management, and peripheral integration are critical.

FAQ

What is the maximum operating junction temperature for the MCF5482CZP166?

The MCF5482CZP166 has a maximum operating junction temperature (Tj) of 105°C, as specified in Table 2 of the MCF5485EC datasheet. This limit must be maintained under worst-case ambient conditions and power dissipation; thermal design should target θJMA ≤ 19°C/W on a 4-layer PCB to ensure reliability in industrial environments where ambient temperatures reach 85°C.

Does the MCF5482CZP166 support DDR2 SDRAM?

No, the MCF5482CZP166 supports only standard SDR SDRAM and single-data-rate DDR SDRAM (often referred to as DDR1), operating at frequencies up to 133 MHz. It does not support DDR2, DDR3, or LPDDR variants. The SDRAM controller implements SSTL_2 and SSTL_3 I/O standards with programmable drive strength, as confirmed in Section 9 of the MCF5485EC datasheet.

Can the MCF5482CZP166 run Linux without external MMU support?

Yes - the MCF5482CZP166 includes an integrated Memory Management Unit (MMU) as part of its ColdFire V4e core, making it fully capable of running standard Linux distributions (e.g., MontaVista, Timesys) without external MMU components. The MMU supports full virtual memory translation with 32-entry fully associative TLBs for both instruction and data paths.

What is the function of the USBRBIAS pin on the MCF5482CZP166?

The USBRBIAS pin on the MCF5482CZP166 sets the reference current for the internal USB 2.0 PHY's termination resistors. A precision 9.1 kΩ ±1% resistor must be connected from USBRBIAS to ground, placed adjacent to the pin, to calibrate differential impedance to 90 Ω for reliable high-speed USB signaling - as detailed in Figure 7 and Section 4.4.1 of the MCF5485EC datasheet.

How many independent CAN interfaces does the MCF5482CZP166 provide?

The MCF5482CZP166 integrates two independent FlexCAN 2.0B controllers, each with 16 configurable message buffers, dedicated acceptance filtering, and full CAN 2.0B protocol compliance. Both controllers operate concurrently and can be assigned to separate physical CAN transceivers, enabling dual-bus automotive diagnostics or redundant fieldbus networks.