NXP Semiconductors MPC860ENCZQ66D4

Overview

MPC860ENCZQ66D4 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 66 MHz CPU operation, 4 KB instruction/4 KB data cache, IEEE 802.3-compliant 10/100 Mbps Ethernet on SCC1–4, four serial communications controllers (SCCs), two serial management channels (SMCs), one SPI, one I²C port, and UTOPIA-level ATM support - deployed in carrier-grade DSLAMs, enterprise routers, and industrial protocol gateways.

For engineers reviewing the MPC860ENCZQ66D4 datasheet, MPC860ENCZQ66D4 pinout, MPC860ENCZQ66D4 application, or MPC860ENCZQ66D4 equivalent, key selection criteria include its 357-pin PBGA package (ZQ), 3.135–3.465 V supply at >40 MHz, 95 °C max junction temperature, dual-bus architecture supporting DRAM/SRAM/Flash, and integrated real-time clock with IEEE 1149.1 JTAG debug interface.

Technical Context

The MPC860ENCZQ66D4 implements a split-processor architecture: a 32-bit Power Architecture CPU core with MMU, instruction/data caches, and branch prediction handles general-purpose tasks, while the independent CPM offloads communications-intensive functions including HDLC, UART, IrDA, BISYNC, and ATM cell processing. 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 PCMCIA sockets.

Timing-critical peripherals-including four SCCs, two SMCs, four baud-rate generators, and TSA-operate autonomously under CPM control, synchronized via shared dual-port RAM and SDMA channels. The SIU provides system-level services: PIT, RTC, watchdog, clock synthesizer, and low-power stop/sleep/deep-sleep modes, all coordinated through a unified interrupt controller with 23 internal sources and seven external IRQ lines.

Key Specifications

Pinout & Package

357-pin Plastic Ball Grid Array (PBGA) package designated ZQ per Freescale case number 5058 (1103D-02), 25 mm × 25 mm footprint, 1.27 mm ball pitch, 1.2 mm height. Thermal design relies on soldered thermal balls connected to PCB ground plane.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPC860T and MPC855T, the MPC860ENCZQ66D4 offers balanced feature density: full 4-SCC Ethernet capability like MPC860T but excludes UTOPIA PHY control, and retains more comms flexibility than MPC855T while avoiding its single-SCC limitation - ideal for mid-tier industrial gateways requiring multiple isolated serial protocols plus 10/100 LAN.

Availability

MPC860ENCZQ66D4 is available at Aetrix Electronics and suitable for DSLAM line cards, industrial protocol gateways, enterprise branch routers, and secure remote terminal units requiring stable component supply across extended product lifecycles.

Supply support for MPC860ENCZQ66D4 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 markets, with roots in Freescale's embedded processing heritage.

The MPC860 family was designed as the foundational PowerQUICC™ platform for carrier-class communications equipment - integrating CPU, CPM, memory controller, and PHY-agnostic serial interfaces to replace multi-chip controller solutions in networking edge devices.

FAQ

What is the maximum operating frequency of the MPC860ENCZQ66D4?

The MPC860ENCZQ66D4 operates at a maximum CPU frequency of 66 MHz in 2:1 mode (CPU clock twice the bus clock). At this speed, the bus runs at 33 MHz. Running above 66 MHz violates AC timing specifications - the device must be configured in half-speed bus mode for any CPU frequency exceeding 66 MHz, such as 80 MHz operation requiring a 40 MHz bus interface.

Does the MPC860ENCZQ66D4 support IEEE 802.3 10/100 Mbps Ethernet?

Yes, the MPC860ENCZQ66D4 supports full IEEE 802.3u 10/100 Mbps Ethernet on all four serial communications controllers (SCC1–SCC4). This capability is implemented in hardware within the CPM and does not require external PHYs beyond standard magnetics - the SCCs provide MII-compatible signaling and handle MAC-layer framing, CRC generation, and collision detection.

What package type and thermal characteristics apply to the MPC860ENCZQ66D4?

The MPC860ENCZQ66D4 uses a 357-pin PBGA package designated ZQ (case number 5058), measuring 25 mm × 25 mm × 1.2 mm with 1.27 mm ball pitch. Its thermal resistance is characterized as RθJB = 13 °C/W on a 4-layer board (2s2p), enabling reliable operation up to 95 °C junction temperature when board-level thermal design follows Freescale layout guidelines for thermal ball grounding and bypass capacitor placement.

Can the MPC860ENCZQ66D4 support ATM cell processing?

The MPC860ENCZQ66D4 includes ATM support compliant with ATM Forum UNI 4.0, including AAL0/AAL5 per-VC handling, cell multiplexing/demultiplexing, and APC scheduling for CBR/UBR traffic. However, it lacks the UTOPIA PHY interface control logic found in MPC860T - so while it processes ATM cells internally, it cannot directly drive UTOPIA-level physical layer devices without external glue logic or a companion framer IC.

What debug and test interfaces are available on the MPC860ENCZQ66D4?

The MPC860ENCZQ66D4 integrates a full IEEE 1149.1 JTAG test access port (TMS, TCK, TDI, TDO, TRST) for boundary scan and emulation, plus an advanced on-chip emulation debug mode with eight hardware watchpoint comparators - four for instruction address, two for data address, and two for data value matching - enabling precise breakpoint insertion and non-intrusive runtime analysis of both CPU and CPM execution.