NXP Semiconductors MPC860DTCZQ50D4

Overview

MPC860DTCZQ50D4 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), 4 KB instruction/4 KB data cache, 10/100 Mbps Ethernet MAC, and ATM UTOPIA interface. It operates at 50 MHz, supports up to 32-bit data bus width, and targets embedded networking control in DSLAMs, enterprise routers, and industrial gateways.

For engineers reviewing the MPC860DTCZQ50D4 datasheet, MPC860DTCZQ50D4 pinout, MPC860DTCZQ50D4 application, or MPC860DTCZQ50D4 equivalent, key selection criteria include its dual-core architecture (CPU + CPM), IEEE 802.3u-compliant Ethernet support, UTOPIA Level 1 master capability, 357-pin PBGA package, and extended temperature range (–40°C to 95°C junction).

Technical Context

The MPC860DTCZQ50D4 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 protocol processing for serial interfaces (SCCs, SMCs), I²C, SPI, and ATM cell handling. Its memory controller supports eight banks with programmable wait states and glueless interfacing to DRAM, SRAM, Flash, and PCMCIA.

Timing-critical functions-including Ethernet MAC, UTOPIA ATM, SCC/SMC serial protocols, and real-time clock-are managed by dedicated hardware blocks synchronized to the 50 MHz system clock. The SIU provides clock synthesis, watchdog, PIT, JTAG debug, and low-power modes (Doze, Sleep, Deep Sleep), enabling deterministic real-time response in communication infrastructure applications.

Key Specifications

Pinout & Package

Package: 357-pin Plastic Ball Grid Array (PBGA), ZQ package code (Case No. 5058), 25 mm × 25 mm footprint, 1.27 mm ball pitch, 1.2 mm height.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPC860T and MPC860DP, the MPC860DTCZQ50D4 offers optimized cost-performance balance for 50 MHz deterministic control tasks, retaining full peripheral compatibility while reducing cache-related power consumption and thermal output.

Availability

MPC860DTCZQ50D4 is available at Aetrix Electronics and suitable for DSLAM line card control, industrial protocol gateway, enterprise branch router, and secure remote access appliance applications requiring stable component supply across extended product lifecycles.

Supply support for MPC860DTCZQ50D4 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 company formed from the spin-off of Freescale Semiconductor and NXP's standard products division, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.

The MPC860DTCZQ50D4 belongs to the PowerQUICC™ family, designed specifically for embedded communications infrastructure requiring hardware-accelerated protocol processing, deterministic real-time response, and long-term industrial reliability.

FAQ

What is the maximum operating frequency of the MPC860DTCZQ50D4?

The MPC860DTCZQ50D4 is rated for a maximum system clock frequency of 50 MHz. This speed governs CPU instruction execution, CPM serial channel baud rates, Ethernet MAC timing, and UTOPIA ATM cell processing. Operating above 50 MHz violates the device's AC timing specifications and may cause data corruption or functional failure. The MPC860DTCZQ50D4 datasheet confirms this rating in Table 5 (Power Dissipation) and Section 9 (Bus Signal Timing).

Does the MPC860DTCZQ50D4 support both Ethernet and ATM simultaneously?

No, the MPC860DTCZQ50D4 does not support concurrent 10/100 Mbps Ethernet and UTOPIA ATM operation. As stated in Section 2 (Features) of the hardware specification, "10/100 Mbps Ethernet support [...] is not available when using ATM over UTOPIA interface." Resource sharing between the Ethernet MAC and UTOPIA physical layer prevents simultaneous activation; designers must choose one interface per system configuration.

What package type and pin count does the MPC860DTCZQ50D4 use?

The MPC860DTCZQ50D4 uses a 357-pin Plastic Ball Grid Array (PBGA) package with ZQ package code (Case No. 5058), measuring 25 mm × 25 mm with 1.27 mm ball pitch. This matches the mechanical data in Table 3 of the MPC860 hardware specification. The ZQ designation distinguishes it from the thinner ZP variant and confirms compatibility with standard PBGA reflow profiles and 4-layer PCB layouts.

What is the operating temperature range for the MPC860DTCZQ50D4?

The MPC860DTCZQ50D4 is specified for an extended industrial temperature range: ambient temperature (TA) from –40°C to 0°C (minimum) and junction temperature (Tj) up to 95°C (maximum). This is documented in Table 2 (Maximum Tolerated Ratings) under "Temperature (extended)" and validated by thermal resistance data in Table 4. The rating supports deployment in telecom cabinets and factory environments without active cooling.

How much on-chip cache memory does the MPC860DTCZQ50D4 include?

The MPC860DTCZQ50D4 integrates 4 KB of instruction cache and 4 KB of data cache, both physically addressed and two-way set-associative. This configuration is confirmed in Table 1 (MPC860 Family Functionality) and Section 2 (Features), which specifies "4- or 8-Kbyte data cache and 4- or 16-Kbyte instruction cache" and identifies the MPC860DT variant (to which MPC860DTCZQ50D4 belongs) as having 4 KB/4 KB.