NXP Semiconductors MPC860PZQ50D4

Overview

MPC860PZQ50D4 from NXP (formerly Freescale) is a PowerQUICC™ integrated communications controller combining a 32-bit Power Architecture™ CPU core with a dedicated RISC communications processor module (CPM), 16 KB instruction cache, 8 KB data cache, and integrated 10/100 Mbps Ethernet MAC. It operates at 50 MHz, supports up to four serial communications controllers (SCCs), ATM over UTOPIA, and PCMCIA socket control - deployed in telecom access equipment, industrial gateways, and legacy networking infrastructure.

For engineers reviewing the MPC860PZQ50D4 datasheet, MPC860PZQ50D4 pinout, MPC860PZQ50D4 application, or MPC860PZQ50D4 equivalent, key selection considerations include its 357-pin PBGA package, dual-voltage 3.3 V core/I/O operation, IEEE 802.3u-compliant Ethernet interface, CPM-based offload capability for HDLC/PPP/ATM, and support for DRAM/SRAM/Flash memory interfaces without glue logic.

Technical Context

The MPC860PZQ50D4 integrates a superscalar Power Architecture™ CPU core with MMU, instruction/data caches, and a separate RISC-based Communications Processor Module (CPM) that handles protocol processing (HDLC, PPP, ATM AAL5, UART) independently of the main CPU. Its memory controller supports eight banks with dynamic bus sizing (8/16/32-bit), programmable wait states, and boot-from-Flash capability.

It features four SCCs configurable for Ethernet, HDLC, or transparent serial; two SMCs for UART/GCI; one SPI; one I²C port; TSA for TDM time-slot routing; and a system integration unit (SIU) with PIT, RTC, watchdog, JTAG, and clock synthesizer. The device uses a 50 MHz system clock and requires 3.135–3.465 V supply for operation above 40 MHz.

Key Specifications

Pinout & Package

Package: 357-pin Plastic Ball Grid Array (PBGA), ZQ package code (Case No. 1103D-02), 25 mm × 25 mm footprint, 1.27 mm ball pitch, 1.2 mm body height. Thermal pad on underside requires solder connection to PCB ground plane for optimal thermal performance per JEDEC JESD51-8.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPC860PZQ50D4, the ZP variant offers identical functionality in a lower-profile package for compact designs, while the MPC860TZQ50D4 sacrifices cache and CPM RAM to reduce silicon area - making it unsuitable for full-featured PowerQUICC deployments requiring simultaneous multi-protocol handling.

Availability

MPC860PZQ50D4 is available at Aetrix Electronics and suitable for DSLAM line cards, industrial protocol gateways, and legacy telecom router replacements requiring stable component supply, long-lifecycle support, and traceable sourcing for obsolescence management.

Supply support for MPC860PZQ50D4 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 (formerly Freescale Semiconductor) is a global leader in secure connectivity solutions for automotive, industrial, and IoT applications, with deep heritage in Power Architecture™ microcontrollers and communications processors.

The MPC860 PowerQUICC family was designed specifically for embedded communications infrastructure - integrating CPU, CPM, Ethernet, ATM, and serial peripherals onto a single die to replace multi-chip controller designs in telecom access and industrial networking equipment.

FAQ

What is the maximum operating frequency of the MPC860PZQ50D4?

The MPC860PZQ50D4 is rated for 50 MHz system clock operation in 1:1 mode (CPU = bus speed). Its DC specifications require 3.135–3.465 V supply at this frequency. While the MPC860 family supports up to 80 MHz in higher-speed variants, the MPC860PZQ50D4 is specifically characterized and guaranteed at 50 MHz - exceeding this violates electrical specifications and may cause timing violations in the memory controller or CPM.

Does the MPC860PZQ50D4 include an integrated Ethernet PHY?

No, the MPC860PZQ50D4 integrates only the 10/100 Mbps Ethernet MAC layer compliant with IEEE 802.3u. It requires an external PHY chip connected via the MII interface (MII_MDC, MII_MDIO, MII_TXD[0:3], MII_RXD[0:3], etc.). The MPC860PZQ50D4 provides full MII timing control and frame buffering but does not drive transformer-coupled RJ-45 lines directly.

What package type does the MPC860PZQ50D4 use, and is it RoHS-compliant?

The MPC860PZQ50D4 uses a 357-pin Plastic Ball Grid Array (PBGA) with ZQ package code (Case No. 1103D-02), 25 mm × 25 mm body, 1.27 mm ball pitch, and 1.2 mm height. As a Freescale product released prior to 2006, it predates mandatory RoHS compliance; however, NXP confirms Pb-free (RoHS-compliant) versions were made available later under suffix "-R" - the MPC860PZQ50D4 itself is leaded unless explicitly ordered as a RoHS variant.

Can the MPC860PZQ50D4 support both ATM and Ethernet simultaneously?

Yes, the MPC860PZQ50D4 can operate ATM over UTOPIA and Ethernet over MII concurrently. However, note that IEEE 802.3u compliance is disabled when the UTOPIA interface is enabled - the hardware specification explicitly states "10/100 Mbps Ethernet support … not available when using ATM over UTOPIA interface." To run both, Ethernet must be implemented via SCC-based HDLC framing or external PHY bridging, not the integrated MAC.

What debug capabilities does the MPC860PZQ50D4 provide?

The MPC860PZQ50D4 includes IEEE 1149.1 JTAG boundary-scan (TMS/TCK/TDI/TDO/TRST), eight hardware watchpoint comparators (4 instruction address, 2 data address, 2 data value), advanced on-chip emulation mode, and software watchdog. These enable real-time instruction tracing, memory access monitoring, breakpoint insertion, and production test - all accessible via standard JTAG debug probes compatible with Power Architecture™ toolchains.