NXP Semiconductors MPC860DEZQ50D4R2

Overview

MPC860DEZQ50D4R2 from NXP Semiconductors (formerly Freescale) is a PowerQUICC™ integrated communications controller combining a 32-bit Power Architecture™ CPU core with a RISC-based Communications Processor Module (CPM), supporting up to two 10/100 Mbps Ethernet channels, four SCCs, two SMCs, I²C, SPI, and PCMCIA. It operates at 50 MHz with 4 KB instruction and 4 KB data caches, targeting embedded networking and telecom control applications.

For engineers reviewing the MPC860DEZQ50D4R2 datasheet, MPC860DEZQ50D4R2 pinout, MPC860DEZQ50D4R2 application, or MPC860DEZQ50D4R2 equivalent, key selection considerations include its 357-pin PBGA package, 3.3 V core/I/O operation, IEEE 802.3u-compliant Ethernet support, UTOPIA-level ATM capability, and dual-bus architecture enabling simultaneous memory and peripheral access in industrial gateways and protocol-conversion systems.

Technical Context

The MPC860DEZQ50D4R2 implements a split-architecture design: a 32-bit Power Architecture™ CPU core with MMU, instruction/data caches, and a separate CPM handling serial, Ethernet, and ATM traffic offloading. Its memory controller supports eight banks with dynamic bus sizing (8/16/32-bit), programmable wait states, and glueless interfacing to DRAM, SRAM, Flash, and EPROM.

It integrates four Serial Communications Controllers (SCCs) configurable for HDLC, UART, IrDA, or Ethernet; two Serial Management Channels (SMCs); one I²C port; one SPI interface; and a Time-Slot Assigner (TSA) for TDM routing. The system integration unit provides PIT, RTC, watchdog, JTAG debug, and clock synthesis - all operating under a unified 3.3 V supply with 5 V-tolerant I/O (except EXTAL/EXTCLK).

Key Specifications

Pinout & Package

Package: 357-pin PBGA (ZQ designation), 25 mm × 25 mm footprint, 1.27 mm ball pitch, 1.2 mm package height per Freescale case no. 5058 (1103D-02). 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 MPC860DEZQ50D4R2 delivers balanced Ethernet/serial throughput with full four-SCC support and 50 MHz deterministic timing - making it optimal for dual-interface industrial gateways where ATM is unnecessary but multi-protocol serial coexistence is critical.

Availability

MPC860DEZQ50D4R2 is available at Aetrix Electronics and suitable for industrial protocol gateways, DSLAM line cards, secure RTUs, and legacy telecom interface modules requiring stable component supply across long-lifecycle deployments.

Supply support for MPC860DEZQ50D4R2 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, with deep heritage in Power Architecture™ microcontrollers.

The MPC860 family was designed as the foundational PowerQUICC™ platform for embedded communications controllers - integrating CPU, CPM, and peripheral interfaces into a single chip to replace multi-chip QUICC-based designs in networking and telecom infrastructure.

FAQ

What is the maximum operating frequency of the MPC860DEZQ50D4R2?

The MPC860DEZQ50D4R2 is rated for a maximum system clock frequency of 50 MHz. It supports both 1:1 (CPU and bus at 50 MHz) and 2:1 (CPU at 100 MHz, bus at 50 MHz) configurations. Operation above 50 MHz requires configuration in half-speed bus mode per Freescale hardware specifications, and the MPC860DEZQ50D4R2 datasheet confirms 50 MHz as its specified maximum rated frequency.

Does the MPC860DEZQ50D4R2 support IEEE 802.3u 100 Mbps Ethernet?

Yes, the MPC860DEZQ50D4R2 supports full IEEE 802.3u-compliant 10/100 Mbps Ethernet on its SCC1–SCC4 channels. Table 1 in the MPC860 family hardware specification explicitly lists "10/100" under the Ethernet column for MPC860DE, and the features section confirms full 10-Mbps operation with optional 100-Mbps capability on specially programmed devices - a capability inherent to the MPC860DEZQ50D4R2 variant.

What package type and pin count does the MPC860DEZQ50D4R2 use?

The MPC860DEZQ50D4R2 uses a 357-pin Plastic Ball Grid Array (PBGA) package with ZQ designation (Freescale case number 5058, 1103D-02), measuring 25 mm × 25 mm with 1.27 mm ball pitch. This matches the mechanical data in Section 14 of the MPC860 Hardware Specifications Rev. 10, confirming ZQ as the correct package code for this speed grade and variant.

Can the MPC860DEZQ50D4R2 operate with a 3.3 V supply only, or does it require multiple voltage rails?

The MPC860DEZQ50D4R2 operates from a single 3.3 V supply for VDDH, VDDL, and VDDSYN, with KAPWR referenced to VDDH – 0.4 V in active modes. DC specifications confirm 3.135–3.465 V operation at >40 MHz, and all I/Os (except EXTAL/EXTCLK) are 5 V tolerant. No auxiliary voltage rails are required - simplifying power design versus multi-rail controllers.

Is the MPC860DEZQ50D4R2 pin-compatible with other MPC860 family members like the MPC860T or MPC855T?

The MPC860DEZQ50D4R2 shares the same 357-pin PBGA ZQ package and pinout with MPC860T and MPC855T, as confirmed by Freescale's mechanical data tables and package cross-reference documentation. However, functional differences exist: MPC860T adds ATM support and different SCC configurations, while MPC855T reduces SCC count. Pin compatibility enables drop-in replacement only when peripheral usage aligns with the specific variant's enabled features.