NXP Semiconductors MPC8540CPX667JB

Overview

MPC8540CPX667JB from Freescale Semiconductor is a PowerQUICC III integrated host processor featuring a 667 MHz e500 Power Architecture core, 256 KB configurable L2 cache/SRAM, dual 10/100/1000 Mbps TSEC Ethernet controllers, DDR SDRAM controller (64-bit, up to 333 MHz), PCI-X 64-bit/133 MHz interface, and RapidIO 8-bit DDR interconnect - deployed in carrier-grade wireless base stations and telecom infrastructure equipment.

For engineers reviewing the MPC8540CPX667JB datasheet, MPC8540CPX667JB pinout, MPC8540CPX667JB application, or MPC8540CPX667JB equivalent, key selection considerations include its 667 MHz core frequency, 783-pin FC-PBGA package, 1.2 V core supply with 3.3 V/2.5 V I/O rails, DDR-1 memory support with full ECC, and dual TSEC compliance with IEEE 802.3z/ab standards.

Technical Context

The MPC8540CPX667JB implements the Book E–enhanced e500 core with 32 KB L1 instruction and 32 KB L1 data caches (parity-protected), MMU optimized for embedded real-time OS environments, and performance monitor facility supporting eight 32-bit event counters. Its coherency module enables cache consistency across local bus, DMA, and RapidIO masters.

System-level integration includes an OCeaN four-port crossbar switch for internal packet routing between TSECs, RapidIO, PCI-X, and DDR interfaces; a programmable interrupt controller compliant with OpenPIC architecture supporting 16 priority levels and 22 internal sources; and dual TSECs with RGMII/RTBI/GMII/TBI/MII physical layer flexibility and 9.6 KB jumbo frame support.

Key Specifications

Pinout & Package

Package: 783-pin FC-PBGA (27 mm × 27 mm, 1.27 mm pitch), RoHS-compliant, designed for forced-air-cooled telecom chassis with junction temperature rating of 0–105 °C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPC8548CZQ667B and P1022NSE, the MPC8540CPX667JB delivers optimal balance of proven telecom interface set (RapidIO, PCI-X, TSEC), deterministic L2 cache behavior, and mature toolchain support - making it preferred for cost-sensitive, long-lifecycle carrier infrastructure where interface continuity outweighs raw compute gains.

Availability

MPC8540CPX667JB is available at Aetrix Electronics and suitable for wireless base station controllers, telecom signaling gateways, and industrial protocol converters requiring stable component supply across extended product lifecycles.

Supply support for MPC8540CPX667JB 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 was a fabless semiconductor company specializing in embedded processors, analog, and connectivity solutions for automotive, industrial, and networking markets before its acquisition by NXP Semiconductors in 2015.

The MPC8540CPX667JB belongs to the PowerQUICC III family, engineered specifically for high-performance, multi-protocol communications infrastructure - integrating networking accelerators, memory controllers, and system interconnects to reduce external component count in telecom line cards.

FAQ

What is the maximum DDR-1 data rate supported by the MPC8540CPX667JB?

The MPC8540CPX667JB supports DDR-1 SDRAM at up to 333 MHz data rate (166 MHz clock), delivering 2.66 GB/s peak bandwidth across its 64-bit interface. This is confirmed in Section 6 of the Hardware Specifications document, which specifies programmable timing for DDR-1 and lists 333 MHz as the upper limit for the 667 MHz speed grade. The MPC8540CPX667JB DDR controller includes full ECC, page mode support, and auto-refresh capability.

Does the MPC8540CPX667JB support PCI Express?

No, the MPC8540CPX667JB does not support PCI Express. It implements a PCI/PCI-X 1.0 controller compliant with PCI 2.2 and PCI-X 1.0 specifications, supporting 64-bit/133 MHz operation. PCI Express capability was introduced in later NXP QorIQ families such as P1/P2 series. The MPC8540CPX667JB's PCI-X interface remains widely used in legacy telecom chassis for attaching crypto accelerators and DSP modules.

What boot sources are supported by the MPC8540CPX667JB?

The MPC8540CPX667JB supports booting from serial ROM via its I2C interface using the integrated boot sequencer, or from parallel NOR flash connected to the local bus using the default boot ROM chip select. Boot configuration is controlled by POR configuration pins and can be extended with I2C-based initialization of registers and memory. The MPC8540CPX667JB does not support NAND flash or SD card boot natively.

Is the MPC8540CPX667JB pin-compatible with other MPC854x variants?

Yes, the MPC8540CPX667JB is pin-compatible with other MPC854x family members in the same 783-pin FC-PBGA package, including MPC8541, MPC8543, and MPC8545. Pin assignments for power, clocks, DDR, TSEC, PCI-X, and RapidIO are identical across the family. Differences lie in feature enablement (e.g., SEC, SerDes) and speed grading - verified in the Device Nomenclature section and Package and Pin Listings chapter of the reference manual.

What is the thermal design power (TDP) of the MPC8540CPX667JB at 667 MHz?

At 667 MHz core frequency and 105 °C junction temperature, the MPC8540CPX667JB has a typical VDD power dissipation of 5.9 W and maximum of 8.7 W, excluding I/O supply power. Total system power (including GVDD, LVDD, OVDD) exceeds 12 W under full load. Thermal solution must maintain die-junction temperature ≤105 °C using a heatsink with ≤1.2 °C/W thermal resistance in forced-air environments, per Section 16 of the Hardware Specifications.