NXP Semiconductors MPC860PCZQ66D4

Overview

MPC860PCZQ66D4 from NXP (formerly Freescale) is a PowerQUICC™ integrated communications controller combining a 32-bit Power Architecture™ CPU core and a dedicated RISC Communications Processor Module (CPM). It operates at up to 66 MHz, integrates 4 KB instruction and 4 KB data caches, supports 10/100 Mbps Ethernet via SCCs, and features a 357-pin PBGA package with 3.3 V operation and 5 V-tolerant I/O. It targets embedded networking control in industrial gateways and telecom edge devices.

For engineers reviewing the MPC860PCZQ66D4 datasheet, MPC860PCZQ66D4 pinout, MPC860PCZQ66D4 application, or MPC860PCZQ66D4 equivalent, key selection criteria include its dual-core architecture (CPU + CPM), IEEE 802.3u-compliant Ethernet support, UTOPIA-level ATM interface capability, 32-bit multiplexed bus timing at 66 MHz, and thermal performance under industrial ambient conditions (–40°C to 95°C junction).

Technical Context

The MPC860PCZQ66D4 implements a split-processor architecture: a 32-bit Power Architecture™ CPU core with MMU, instruction/data caches, and branch prediction, plus an independent RISC-based Communications Processor Module (CPM) handling serial protocols, Ethernet framing, and ATM cell processing offload. The CPM includes 8 KB dual-port RAM, 16 SDMA channels, and four SCCs supporting HDLC, UART, IrDA, and IEEE 802.3.

Its memory subsystem supports eight banks with dynamic bus sizing (8/16/32-bit), programmable wait states (up to 15 per bank), and glueless interfacing to DRAM, SRAM, Flash, and PCMCIA. Clock synthesis uses an on-chip PLL with external crystal input (EXTAL), and system timing is governed by AC bus specifications validated up to 66 MHz with 50-pF load assumptions.

Key Specifications

Pinout & Package

Package: 357-pin Plastic Ball Grid Array (PBGA), ZQ designation per Freescale case number 5058 (1103D-02), 25 mm × 25 mm footprint, 1.27 mm ball pitch, 1.2 mm package height.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPC860PCZQ66D4, MPC860PZP66D4 offers identical electrical specs but different thermal resistance profile favoring board-conducted cooling, while MPC855TZQ66D4 sacrifices three SCCs, ATM, and PCMCIA to reduce cost and power-making it viable only for stripped-down Ethernet gateway roles.

Availability

MPC860PCZQ66D4 is available at Aetrix Electronics and suitable for industrial protocol gateways, DSLAM line cards, secure RTUs, telecom signaling gateways, and legacy network interface modules requiring stable component supply across extended lifecycle programs.

Supply support for MPC860PCZQ66D4 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 expertise in Power Architecture™ processors and communications SoCs.

The MPC860 PowerQUICC family was designed specifically for embedded networking control-integrating CPU, CPM, and peripheral interfaces to replace multi-chip controller designs in telecom access equipment, industrial gateways, and protocol converters.

FAQ

What is the maximum bus frequency supported by the MPC860PCZQ66D4?

The MPC860PCZQ66D4 supports a maximum bus frequency of 66 MHz in 1:1 mode (CPU = bus). When operated at 80 MHz CPU speed, it must be configured in 2:1 mode (40 MHz bus) per Freescale hardware specification Rev. 10. Bus timing parameters-including setup/hold times and valid windows-are explicitly defined for 33, 40, 50, and 66 MHz operation in Table 7 of the MPC860PCZQ66D4 datasheet.

Does the MPC860PCZQ66D4 support IEEE 802.3u 100 Mbps Ethernet?

Yes, the MPC860PCZQ66D4 supports full IEEE 802.3u-compliant 10/100 Mbps Ethernet via its four Serial Communications Controllers (SCCs), with MAC-layer functions executed autonomously in the CPM. However, this capability is disabled when the UTOPIA ATM interface is enabled-requiring design trade-off selection between Ethernet speed and ATM functionality per application needs.

What package type and thermal characteristics apply to the MPC860PCZQ66D4?

The MPC860PCZQ66D4 uses a 357-pin PBGA package with ZQ designation (case number 5058, 25 mm × 25 mm, 1.27 mm pitch, 1.2 mm height). Its thermal resistance values are RθJA = 34°C/W (natural convection, single-layer board), RθJB = 13°C/W (junction-to-board), and RθJC = 8°C/W (junction-to-case), as specified in Table 4 of the MPC860PCZQ66D4 hardware spec.

Can the MPC860PCZQ66D4 operate in extended temperature ranges?

Yes, the MPC860PCZQ66D4 is rated for extended industrial temperature operation: ambient temperature range of –40°C to +85°C (with junction temperature limited to 95°C). This is confirmed in Table 2 (Maximum Tolerated Ratings) and applies to all ZQ-package variants including MPC860PCZQ66D4, enabling deployment in uncontrolled environments like outdoor telecom cabinets or factory floors.

How does the CPM in the MPC860PCZQ66D4 differ from the CPU core?

The CPM in the MPC860PCZQ66D4 is a separate RISC processor dedicated to communications tasks-handling serial protocols (HDLC, UART, Ethernet framing), ATM cell processing, and DMA transfers-without CPU intervention. Unlike the main Power Architecture™ CPU core (which runs applications and OS), the CPM has its own 8 KB dual-port RAM, 16 SDMA channels, and protocol-specific instructions, enabling true hardware offload and deterministic real-time response.