NXP Semiconductors MPC8245LZU300D

Overview

MPC8245LZU300D from Freescale Semiconductor is a 32-bit PowerPC™ MPC603e-based integrated processor combining a superscalar CPU core with PCI bridge, SDRAM memory controller, DUART, DMA, and I²C peripherals in a single TBGA package. It operates at up to 300 MHz CPU frequency, supports 66 MHz PCI bus and 100 MHz memory bus, and targets embedded control systems requiring deterministic real-time processing and legacy peripheral integration.

For engineers reviewing the MPC8245LZU300D datasheet, MPC8245LZU300D pinout, MPC8245LZU300D application, or MPC8245LZU300D equivalent, key selection considerations include its 300 MHz CPU speed grade, 1.8–2.0 V core supply requirement, 352-pin TBGA package, PCI 2.2 compliance, and dual UART + memory coherency support for industrial gateway and telecom line card designs.

Technical Context

The MPC8245LZU300D integrates a statically designed 0.25-µm CMOS MPC603e core with separate PLLs for CPU and peripheral logic, enabling asynchronous operation of processor (up to 300 MHz) and PCI/memory buses (up to 66/100 MHz). Its internal peripheral logic bus uses decoupled 32-bit address and 64-bit data paths with store-gathering and full memory coherency.

It implements IEEE 1149.1 JTAG debug interface, programmable power management (nap/doze/sleep modes), lockable L1 caches (16 KB instruction + 16 KB data), and hardware-enforced PCI-to-memory coherency. The device supports both PCI host and agent modes with dual address cycle (DAC) capability and two inbound/outbound address translation units (ATUs).

Key Specifications

Pinout & Package

Package: 352-pin Tape Ball Grid Array (TBGA), 27 mm × 27 mm, 1.27 mm pitch, RoHS-compliant. Thermal resistance R_θJA = 16.1°C/W (single-layer board), R_θJC = 1.8°C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPC8245LZU300D, MPC8241LZU266D offers lower power and cost at reduced performance, while MPC8247LZU333D delivers higher throughput at increased thermal and supply complexity - both share identical peripheral logic and software compatibility, easing migration within the MPC824x family.

Availability

MPC8245LZU300D is available at Aetrix Electronics and suitable for telecom infrastructure, industrial gateways, and network storage appliances requiring stable component supply, long-lifecycle support, and guaranteed obsolescence management.

Supply support for MPC8245LZU300D 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 MPC8245LZU300D belongs to the MPC824x integrated processor family designed specifically for cost-optimized, high-reliability embedded systems requiring PCI connectivity, real-time control, and legacy interface support without external bridge chips.

FAQ

What is the maximum supported SDRAM capacity for the MPC8245LZU300D?

The MPC8245LZU300D supports up to 2 GB of SDRAM memory across one to eight banks of 16-, 64-, 128-, 256-, or 512-Mbit devices. This capacity is achieved using its 32- or 64-bit wide memory data bus and programmable timing controls, making MPC8245LZU300D suitable for buffering large packet queues in network edge devices.

Does the MPC8245LZU300D support little-endian operation?

Yes, the MPC8245LZU300D supports selectable big- or little-endian operation via configuration registers accessible through the PCI interface or internal memory-mapped control space. This flexibility allows MPC8245LZU300D to interface seamlessly with both legacy big-endian PowerPC software and modern little-endian peripheral IP blocks.

What are the required supply voltage tolerances for MPC8245LZU300D core operation at 300 MHz?

For 300 MHz operation, the MPC8245LZU300D requires VDD = 1.8 V, 1.9 V, or 2.0 V with a tolerance of ±100 mV. AVDD and AVDD2 must match the selected nominal VDD value. Exceeding this tolerance risks timing violations or functional failure, so precision regulation is mandatory for stable MPC8245LZU300D operation.

Can the MPC8245LZU300D operate as a PCI agent device?

Yes, the MPC8245LZU300D supports PCI agent mode capability, allowing it to function as a peripheral device on a PCI bus - for example, as a custom I/O card responding to memory-mapped configuration reads/writes from a host CPU. This dual-role capability (host or agent) is configured via internal registers and does not require hardware changes to the MPC8245LZU300D itself.

How does the MPC8245LZU300D handle cache coherency with PCI bus transactions?

The MPC8245LZU300D implements selectable hardware-enforced coherency: when snoop mode is enabled, PCI accesses to local memory space are passed to the processor bus for cache snooping. This ensures cache coherency without software intervention, reducing latency and complexity in MPC8245LZU300D-based systems with DMA-capable peripherals.