NXP Semiconductors MPC860TCZQ50D4

Overview

MPC860TCZQ50D4 from NXP Semiconductors (formerly Freescale) is a PowerQUICC™ integrated communications processor combining a 32-bit Power Architecture™ CPU core and a RISC-based Communications Processor Module (CPM) in a single PBGA357 package. It delivers 50 MHz system clock operation, 4 KB instruction/4 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 carrier-grade DSLAMs, enterprise routers, and industrial protocol gateways.

For engineers reviewing the MPC860TCZQ50D4 datasheet, MPC860TCZQ50D4 pinout, MPC860TCZQ50D4 application, or MPC860TCZQ50D4 equivalent, key selection criteria include its dual-bus architecture (CPU + CPM), 32-bit address/32-bit data bus with dynamic sizing, 357-pin PBGA thermal profile (RθJB = 13°C/W), and support for boot-from-Flash, DRAM, SRAM, and PCMCIA socket interfaces.

Technical Context

The MPC860TCZQ50D4 implements a split-processor architecture: a 32-bit Power Architecture CPU core with MMU, instruction/data caches, and time base/RTC, paired with an autonomous CPM handling serial protocols (HDLC, UART, IrDA, BISYNC), ATM cell processing, and FEC offload. Its memory controller supports eight banks with programmable wait states, CAS/WE line control, and glueless interfacing to DRAM, Flash, and SRAM.

Timing-critical subsystems include four independent baud-rate generators tied to SCCs/SMCs, a TSA supporting T1/E1/PCM highway routing, and IEEE 1149.1 JTAG debug interface with eight hardware comparators. The device operates at 3.3 V with 5-V-tolerant I/O (except EXTAL/EXTCLK) and supports four low-power modes: Doze, Sleep, Deep Sleep, and Power Down.

Key Specifications

Pinout & Package

Package: 357-ball plastic ball grid array (PBGA), ZQ package code (Case No. 5058), 25 mm × 25 mm body, 1.27 mm ball pitch, 1.2 mm height. Thermal pad exposed on underside; requires solder connection to internal ground plane for optimal RθJB performance.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPC860PZP50D4, MPC860TCZQ50D4 offers lower junction-to-board thermal resistance for improved passive cooling on multilayer PCBs; versus MPC860TBCZQ50D4, it omits extended-temperature screening - reducing cost and qualification overhead for non-industrial deployments.

Availability

MPC860TCZQ50D4 is available at Aetrix Electronics and suitable for DSLAM line card control, industrial protocol gateway, and carrier-grade router management requiring stable component supply across long-lifecycle telecom infrastructure programs.

Supply support for MPC860TCZQ50D4 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 as a highly integrated communications controller targeting carrier-class networking equipment, DSLAMs, and protocol-conversion gateways - emphasizing CPU/CPM parallelism, multi-protocol serial support, and thermal efficiency in dense PCB layouts.

FAQ

What is the maximum operating frequency of the MPC860TCZQ50D4?

The MPC860TCZQ50D4 is rated for a maximum system clock frequency of 50 MHz, as confirmed by Freescale's Hardware Specifications Rev. 10. This speed grade is validated for stable operation with VDDH/VDDL = 3.135–3.465 V and defines its Ethernet throughput ceiling and ATM cell processing rate. Operating above 50 MHz violates the device's AC timing specifications and risks functional failure.

Does the MPC860TCZQ50D4 support IEEE 802.3u 100 Mbps Ethernet?

Yes, the MPC860TCZQ50D4 supports full IEEE 802.3u-compliant 10/100 Mbps Ethernet via its SCC1–SCC4 serial communication controllers, as documented in Section 2 Features and Table 1 of the MPC860 Hardware Specifications. This capability is enabled in hardware and does not require external PHY - though external magnetics and PHY IC remain necessary for physical layer compliance.

What package type and thermal characteristics apply to the MPC860TCZQ50D4?

The MPC860TCZQ50D4 uses a 357-ball PBGA package with ZQ designation (Case No. 5058), 25 mm × 25 mm body, and 1.27 mm pitch. Its key thermal parameter is RθJB = 13°C/W (junction-to-board), measured on a 2s2p test board - critical for PCB-level thermal design. The package includes an exposed thermal pad that must be soldered to the ground plane to achieve this rating.

Can the MPC860TCZQ50D4 operate with 5 V-tolerant I/O pins?

Most I/O pins on the MPC860TCZQ50D4 are 5 V tolerant (VIH up to 5.5 V), except EXTAL and EXTCLK, which accept only 0.7×VDDH to VDDH+0.3 V. However, all 5 V-tolerant inputs must remain within 2.5 V above VDDH during power-up and normal operation - exceeding this delta risks latch-up or permanent damage per Table 2 Maximum Tolerated Ratings.

How does the MPC860TCZQ50D4 handle low-power operation in embedded systems?

The MPC860TCZQ50D4 implements four distinct low-power modes: Doze (CPM active, core disabled), Sleep (RTC/PIT active), Deep Sleep (PLL off), and Power Down (PLL/RTC/PIT/time base active). In Power Down mode, current draw drops below 100 µA - enabling battery-backed operation in remote terminal units while retaining real-time clock and wake-on-interrupt capability.