NXP Semiconductors MPC860DEZQ80D4

Overview

MPC860DEZQ80D4 from NXP Semiconductors (formerly Freescale) is a PowerQUICC™ integrated communications controller combining a 32-bit Power Architecture™ CPU core with a dedicated RISC Communications Processor Module (CPM), supporting up to two 10/100 Mbps Ethernet channels, four SCCs, two SMCs, I²C, SPI, and PCMCIA interface. It operates at 80 MHz with 4 KB instruction and 4 KB data cache, targeting embedded networking and telecom control applications.

For engineers reviewing the MPC860DEZQ80D4 datasheet, MPC860DEZQ80D4 pinout, MPC860DEZQ80D4 application, or MPC860DEZQ80D4 equivalent, key selection considerations include its 357-pin PBGA package, IEEE 802.3u-compliant Ethernet support, dual-bus timing modes (1:1 and 2:1), CPM offloading capability for protocol processing, and industrial temperature range (–40°C to +95°C junction).

Technical Context

The MPC860DEZQ80D4 implements a dual-bus architecture: a 32-bit CPU bus operating up to 80 MHz and a separate CPM bus enabling concurrent protocol handling. Its CPM includes 8 KB dual-port RAM, 16 SDMA channels, and hardware acceleration for HDLC, UART, IrDA, BISYNC, and ATM cell processing (via UTOPIA or serial interface).

It integrates a system integration unit (SIU) with clock synthesizer, real-time clock, watchdog timer, and IEEE 1149.1 JTAG debug interface. Memory controller supports eight banks with programmable wait states, DRAM/SRAM/Flash interfacing, and boot-selectable 8/16/32-bit width - all operating at 3.3 V with 5-V-tolerant I/O (except EXTAL/EXTCLK).

Key Specifications

Pinout & Package

Package: 357-ball Plastic Ball Grid Array (PBGA), ZQ designation per Freescale case number 5058 (1103D-02), 25 mm × 25 mm body, 1.27 mm ball pitch, 1.2 mm profile. Thermal pad on underside requires solder connection to PCB ground plane for optimal thermal performance.

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 MPC860DEZQ80D4 uniquely balances dual-Ethernet capability, PCMCIA socket support, and full CPM feature set-making it optimal for compact, field-upgradable telecom edge devices where both wired LAN and removable media interfaces are essential.

Availability

MPC860DEZQ80D4 is available at Aetrix Electronics and suitable for DSLAM control, industrial gateways, telecom base station controllers, and secure RTUs requiring stable component supply across extended product lifecycles.

Supply support for MPC860DEZQ80D4 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 specializing in secure connectivity solutions for automotive, industrial, and communications markets, formed from the spin-off and acquisition of Freescale Semiconductor in 2015.

The MPC860DEZQ80D4 belongs to the PowerQUICC™ family, designed specifically for embedded communications infrastructure requiring real-time protocol offload, multi-interface integration, and long-term industrial reliability - not general-purpose computing.

FAQ

What is the maximum operating frequency of the MPC860DEZQ80D4 CPU core?

The MPC860DEZQ80D4 CPU core operates at a maximum frequency of 80 MHz. However, due to bus timing constraints, the external bus must run at 40 MHz when the CPU is at 80 MHz (2:1 mode). This configuration is explicitly supported in the hardware specification and validated for stable operation across the full industrial temperature range.

Does the MPC860DEZQ80D4 support IEEE 802.3u 100BASE-TX Ethernet?

Yes, the MPC860DEZQ80D4 supports full IEEE 802.3u-compliant 10/100 Mbps Ethernet on up to two SCC channels. The hardware specification confirms SCC1–SCC4 can be configured for 100 Mbps operation with MII-compatible timing, and the CPM provides hardware-assisted frame checksumming and FIFO buffering to sustain line-rate throughput.

What package type and thermal characteristics apply to the MPC860DEZQ80D4?

The MPC860DEZQ80D4 uses a 357-ball PBGA package with ZQ designation (25×25 mm, 1.27 mm pitch, 1.2 mm height). Its thermal resistance is RθJA = 34°C/W on a single-layer board and RθJB = 13°C/W on a four-layer board, with junction-to-case RθJC = 8°C/W - all measured per JEDEC JESD51 standards and documented in the official hardware specification Rev. 10.

Can the MPC860DEZQ80D4 operate in low-power modes while maintaining real-time clock functionality?

Yes, the MPC860DEZQ80D4 supports five low-power modes. In Sleep, Deep Sleep, and Power Down modes, the real-time clock (RTC) remains fully operational alongside the periodic interrupt timer (PIT) and time base decrementer - enabling wake-on-alarm, scheduled task resumption, and accurate timekeeping without CPU intervention.

Is the MPC860DEZQ80D4 pin-compatible with other MPC860 family members like the MPC860T or MPC860DP?

No, the MPC860DEZQ80D4 is not pin-compatible with MPC860T or MPC860DP. While all share the same 357-ball PBGA footprint, signal assignments differ significantly - particularly for Ethernet PHY interface pins, PCMCIA control lines, and ATM-related signals. Board-level redesign is required when substituting between these variants due to incompatible pin multiplexing and function mapping.