NXP Semiconductors MPC860TZQ66D4

Overview

MPC860TZQ66D4 from NXP Semiconductors (formerly Freescale) is a PowerQUICC™ integrated communications controller combining a 32-bit Power Architecture™ CPU core and a dedicated RISC communications processor module (CPM). It operates at up to 66 MHz, integrates 4 KB instruction and 4 KB data caches, supports 10/100 Mbps Ethernet via SCCs, and targets embedded networking control applications in industrial gateways and telecom edge devices.

For engineers reviewing the MPC860TZQ66D4 datasheet, MPC860TZQ66D4 pinout, MPC860TZQ66D4 application, or MPC860TZQ66D4 equivalent, key selection considerations include its 357-pin PBGA package, IEEE 802.3u-compliant Ethernet support, UTOPIA-level ATM interface capability, and dual-bus architecture with independent CPU and CPM clock domains.

Technical Context

The MPC860TZQ66D4 implements a dual-processor architecture: a 32-bit Power Architecture™ CPU core with MMU, instruction/data caches, and branch prediction; and a separate RISC-based Communications Processor Module (CPM) handling serial protocols, Ethernet framing, and ATM cell processing. The CPM includes 8 KB dual-port RAM, 16 SDMA channels, and four SCCs supporting HDLC, UART, IrDA, and IEEE 802.3.

It features a programmable memory controller supporting DRAM, SRAM, Flash, and PCMCIA; four BRGs for flexible baud-rate generation; I²C and SPI interfaces; and system-level functions including RTC, PIT, watchdog, JTAG debug, and low-power stop/sleep modes. The device requires 3.3 V operation with 5-V-tolerant I/O (except EXTAL/EXTCLK).

Key Specifications

Pinout & Package

Package: 357-pin 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 package height.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPC860PZP80D4, the MPC860TZQ66D4 trades peak frequency and cache size for lower power and thermal footprint in space-constrained enclosures; versus MPC855TZQ66D4, it adds three extra SCCs and full UTOPIA/ATM capability at the cost of higher pin count and firmware overhead.

Availability

MPC860TZQ66D4 is available at Aetrix Electronics and suitable for industrial protocol gateways, DSLAM edge nodes, secure RTUs, and telecom signaling gateways requiring stable component supply across extended product lifecycles.

Supply support for MPC860TZQ66D4 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 roots in Freescale's embedded processing heritage.

The MPC860TZQ66D4 belongs to the PowerQUICC™ family, designed specifically for integrated communications control in resource-constrained networking equipment where deterministic real-time performance and multi-protocol flexibility are critical.

FAQ

What is the maximum operating frequency of the MPC860TZQ66D4?

The MPC860TZQ66D4 is rated for a maximum CPU and bus frequency of 66 MHz in 1:1 mode. When operated at higher internal clock speeds (e.g., 80 MHz), it must be configured in 2:1 mode (CPU at 80 MHz, bus at 40 MHz) to meet timing specifications. This constraint is defined in the hardware specifications Rev. 10, Table 5, and applies directly to the MPC860TZQ66D4's ZQ-package silicon revision D.4.

Does the MPC860TZQ66D4 support IEEE 802.3u 100 Mbps Ethernet?

Yes, the MPC860TZQ66D4 supports full-duplex 10/100 Mbps Ethernet via its four Serial Communications Controllers (SCCs), compliant with IEEE 802.3u. However, this capability is disabled when the UTOPIA interface is used for ATM - the hardware specification explicitly states "10/100 Mbps Ethernet support … (not available when using ATM over UTOPIA interface)." The MPC860TZQ66D4 implements this restriction in silicon.

What package type and pin count does the MPC860TZQ66D4 use?

The MPC860TZQ66D4 uses a 357-pin Plastic Ball Grid Array (PBGA) package with ZQ designation (case number 5058, 1103D-02), measuring 25 mm × 25 mm with 1.27 mm ball pitch and 1.2 mm height. This matches the mechanical data in Section 14 of the MPC860 Hardware Specifications Rev. 10 and distinguishes it from the ZP-package variants (e.g., MPC860PZP80D4).

Can the MPC860TZQ66D4 operate with a 5 V input signal on its I/O pins?

Most I/O pins on the MPC860TZQ66D4 tolerate 5 V inputs, but with strict constraints: input voltage must not exceed VDDH + 2.5 V at any time, including power-up sequences. The DC specifications (Table 6) confirm VIH up to 5.5 V for non-EXTAL/EXTCLK pins, yet caution that exceeding VDDH + 2.5 V risks reliability degradation. EXTAL and EXTCLK pins are excluded and require 0.7×VDDH to VDDH+0.3 V.

What is the role of the Communications Processor Module (CPM) in the MPC860TZQ66D4?

The CPM in the MPC860TZQ66D4 is a dedicated RISC co-processor that handles serial communications offloading - managing SCCs, SMCs, SPI, I²C, and ATM/UTOPIA protocols independently of the main CPU. It includes 8 KB dual-port RAM and 16 SDMA channels, enabling zero-CPU-intervention frame reception/transmission for HDLC, Ethernet, and ATM, which is essential for deterministic latency in the MPC860TZQ66D4's target applications.