NXP Semiconductors MPC860PCZQ50D4

Overview

MPC860PCZQ50D4 from NXP Semiconductors (formerly Freescale) is a PowerQUICC™ integrated communications controller combining a 32-bit Power Architecture™ CPU core and a RISC-based Communications Processor Module (CPM). It delivers 50 MHz system clock operation, 16 KB instruction/8 KB data cache, IEEE 802.3u-compliant 10/100 Mbps Ethernet support via SCCs, and UTOPIA-level ATM cell processing up to 70 Mbps - deployed in telecom access gateways, industrial protocol converters, and legacy network edge routers.

For engineers reviewing the MPC860PCZQ50D4 datasheet, MPC860PCZQ50D4 pinout, MPC860PCZQ50D4 application, or MPC860PCZQ50D4 equivalent, key selection considerations include its 357-pin PBGA package (ZQ), 3.3 V core/I/O operation with 5 V-tolerant inputs, dual-bus architecture supporting DRAM/SRAM/Flash, and integrated real-time clock, PCMCIA socket controller, and I²C port for system management.

Technical Context

The MPC860PCZQ50D4 implements a split-processor architecture: a 32-bit Power Architecture™ CPU core with MMU, instruction/data caches, and branch prediction handles general-purpose tasks and OS execution, while the independent CPM offloads serial communications, HDLC/SDLC framing, Ethernet MAC, ATM cell processing, and time-slot assignment - enabling deterministic real-time packet handling without CPU intervention. Its memory controller supports eight banks with programmable wait states, dynamic bus sizing (8/16/32-bit), and glueless interfacing to DRAM, SRAM, Flash, and EPROM.

Timing-critical peripherals-including four SCCs, two SMCs, SPI, I²C, TSA, and FEC-are synchronized to the CPM's internal clock domain, decoupled from CPU frequency scaling. The device operates at 50 MHz system clock (confirmed by part suffix '50'), requiring 3.135–3.465 V supply for >40 MHz operation, and integrates IEEE 1149.1 JTAG for boundary-scan and on-chip emulation debug.

Key Specifications

Pinout & Package

Package: 357-pin Plastic Ball Grid Array (PBGA), ZQ package code (Case No. 5058, 25×25×1.2 mm, 1.27 mm pitch), RoHS-compliant, lead-free finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPC860PCZQ50D4, MPC860PZP50D4 offers marginally better board-level thermal performance in identical layouts, while MPC860TBCZQ50D4 trades higher complexity and power for standardized Ethernet PHY support - making MPC860PCZQ50D4 optimal for cost-sensitive, thermally constrained telecom edge applications relying on discrete PHYs or legacy framing.

Availability

MPC860PCZQ50D4 is available at Aetrix Electronics and suitable for DSL access multiplexers, industrial protocol gateways, and legacy telecom edge routers requiring stable component supply across extended product lifecycles.

Supply support for MPC860PCZQ50D4 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 is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications, formed from the acquisition of Freescale Semiconductor in 2015.

The MPC860 PowerQUICC family was designed specifically for embedded communications infrastructure - integrating CPU, CPM, and peripheral sets to replace multi-chip controller designs in networking, telecom, and industrial gateway applications.

FAQ

What is the maximum operating frequency of the MPC860PCZQ50D4?

The MPC860PCZQ50D4 is rated for 50 MHz system clock operation, as indicated by the '50' in its part number. This frequency enables full-speed 10/100 Mbps Ethernet and ATM cell processing up to 70 Mbps. Operation above 50 MHz is not supported - the device must be configured for half-speed bus mode if used with higher CPU clocks, but MPC860PCZQ50D4 itself is specified only up to 50 MHz.

Does the MPC860PCZQ50D4 support IEEE 802.3u-compliant 100 Mbps Ethernet?

Yes, the MPC860PCZQ50D4 supports IEEE 802.3u-compliant 10/100 Mbps Ethernet through its four Serial Communications Controllers (SCCs), configurable for MII or RMII interfaces. However, full PHY-level compliance depends on external PHY selection and layout - the MPC860PCZQ50D4 provides MAC functionality and timing control, not physical layer signaling.

What package type does the MPC860PCZQ50D4 use, and is it RoHS-compliant?

The MPC860PCZQ50D4 uses a 357-pin Plastic Ball Grid Array (PBGA) package with ZQ designation (25×25 mm, 1.2 mm height, 1.27 mm pitch). It is RoHS-compliant and lead-free, per Freescale/NXP documentation and ordering information in the MPC860 hardware specifications Rev. 10.

Can the MPC860PCZQ50D4 operate with a 5 V input supply?

No - the MPC860PCZQ50D4 requires 3.135–3.465 V for operation at 50 MHz. While its I/O pins are 5 V-tolerant (VIH up to 5.5 V), the core and I/O power supplies (VDDH, VDDL, VDDSYN) must be 3.3 V ±3.5%. Applying 5 V to any supply pin will cause permanent damage.

What debugging interfaces are available on the MPC860PCZQ50D4?

The MPC860PCZQ50D4 includes IEEE 1149.1 (JTAG) test access port for boundary-scan and on-chip emulation, plus eight hardware comparators for instruction/data address and value watchpoints. These enable non-intrusive real-time debugging, breakpoint insertion, and memory access tracing without halting the CPU or CPM.