NXP Semiconductors MPC8241LZQ266D

Overview

MPC8241LZQ266D from Freescale Semiconductor is a 32-bit integrated processor combining an MPC603e superscalar core with PCI bridge, memory controller, DUART, DMA, and I2C peripherals - operating at up to 266 MHz CPU / 133 MHz memory / 66 MHz PCI clock rates, supporting SDRAM up to 2 GB and PCI 2.2-compliant host/agent operation in embedded control and communications systems.

For engineers reviewing the MPC8241LZQ266D datasheet, MPC8241LZQ266D pinout, MPC8241LZQ266D application, or MPC8241LZQ266D equivalent, key selection considerations include its dual-clock domain architecture (separate CPU and peripheral PLLs), 1.8 V core / 3.3 V I/O supply scheme, PBGA-357 package, and support for big/little-endian, ECC/parity memory, and PCI locked accesses.

Technical Context

The MPC8241LZQ266D implements a decoupled 64-bit peripheral logic bus between its MPC603e core and integrated peripherals, enabling independent frequency scaling: CPU core runs at up to 266 MHz while PCI and memory buses operate at 66 MHz and 133 MHz respectively. Its dual PLL architecture maintains synchronous bus coherency across domains.

It integrates full PCI 2.2 functionality including DAC for 64-bit addressing (master only), hardware-enforced coherency, store-gathering, prefetching, and ATU-based inbound/outbound address translation - alongside a memory controller supporting programmable SDRAM timing, 32-/64-bit data paths, and ECC or parity protection.

Key Specifications

Pinout & Package

Package: 357-ball plastic ball grid array (PBGA), surface-mount, thick substrate and thick mold cap, designed for industrial junction temperature range (0–105 °C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPC8245LZQ266D, the MPC8241LZQ266D omits USB and uses fewer gates, lowering static power and cost; versus MPC8272LZQ266D, it lacks SEC hardware, making it unsuitable for encrypted data paths but more efficient for general-purpose embedded processing where security is handled externally.

Availability

MPC8241LZQ266D is available at Aetrix Electronics and suitable for industrial control systems, telecom line cards, network attached storage controllers, and medical imaging subsystems requiring stable component supply across extended product lifecycles.

Supply support for MPC8241LZQ266D 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) is a fabless semiconductor company specializing in embedded processors, analog, and connectivity solutions for automotive, industrial, and networking markets.

The MPC8241LZQ266D belongs to Freescale's PowerQUICC™ II family of integrated communications processors, designed to consolidate PCI bridge, memory controller, and peripheral logic around the MPC603e core for cost-sensitive, high-reliability embedded systems.

FAQ

What is the maximum supported SDRAM capacity for the MPC8241LZQ266D?

The MPC8241LZQ266D supports up to 2 GB of SDRAM memory across 1–8 banks using 16-, 64-, 128-, 256-, or 512-Mbit devices. This capacity is enabled by its 32-bit address bus with programmable bank decoding and timing registers, allowing flexible memory population for cost-optimized or performance-tuned configurations in the MPC8241LZQ266D design.

Does the MPC8241LZQ266D support both big-endian and little-endian operation?

Yes, the MPC8241LZQ266D supports selectable big-endian or little-endian operation via configuration bits in its internal control registers. This flexibility allows the MPC8241LZQ266D to interface seamlessly with legacy big-endian peripherals or modern little-endian software stacks without requiring external byte-swapping logic.

What power management modes does the MPC8241LZQ266D offer?

The MPC8241LZQ266D provides three dynamic power management modes: nap (0.4 W typical at 266 MHz), doze (1.0 W), and sleep (0.2 W). These modes reduce core voltage gating and clock gating depth progressively, enabling significant power savings during idle periods while maintaining fast wake-up latency - critical for responsive MPC8241LZQ266D-based control systems.

Is the MPC8241LZQ266D pin-compatible with other members of the MPC824x family?

The MPC8241LZQ266D shares the same PBGA-357 package and pinout with the MPC8245LZQ266D and MPC8272LZQ266D, enabling drop-in replacement in designs where USB or security engine features are unused. However, unused pins differ across variants, so schematic review is required before substitution - the MPC8241LZQ266D itself has no USB or SEC-related pins.

What is the role of the DLL in the MPC8241LZQ266D memory interface?

The delay-locked loop (DLL) in the MPC8241LZQ266D aligns SDRAM_CLK outputs to SDRAM_SYNC_IN with sub-cycle precision, compensating for PCB trace delays. It supports four modes (via DLL_EXTEND and tap delay settings) to lock over loop delays from 0–30 ns, ensuring reliable DDR timing margins - a critical function for stable MPC8241LZQ266D SDRAM operation at 133 MHz.