NXP Semiconductors KMPC8280ZUUPEA

Overview

KMPC8280ZUUPEA from Freescale Semiconductor is a PowerQUICC II integrated communications processor featuring a dual-issue G2_LE core (Power Architecture® compliant), 16 KB I-Cache and 16 KB D-Cache, three Fast Communication Controllers (FCCs), four Serial Communications Controllers (SCCs), PCI bridge, USB 2.0 controller, and two Multichannel Controllers (MCCs). It operates at up to 450 MHz and targets high-reliability embedded networking applications including ATM edge routers and TDM-based access gateways.

For engineers reviewing the KMPC8280ZUUPEA datasheet, KMPC8280ZUUPEA pinout, KMPC8280ZUUPEA application, or KMPC8280ZUUPEA equivalent, key selection criteria include its 480-pin TBGA (leaded) package, dual PLL architecture enabling independent core/CPM clocking, UTOPIA II interface support, IMA capability, and TC layer hardware-features confirmed for the ZU package variant per MPC8280EC Rev. 2.

Technical Context

The KMPC8280ZUUPEA integrates a 32-bit G2_LE microprocessor core with separate 16 KB instruction and data caches, physically addressed and four-way set associative, coupled with a dedicated 32 KB dual-port CPM RAM and RISC-based communications processor. Its clock system employs two independent PLLs-one for the core (2:1 to 8:1 multipliers) and one for the CPM (2:1 to 8:1 multipliers)-enabling asynchronous operation at up to 450 MHz core and 292 MHz CPM frequencies.

It supports three 10/100-Mbps Ethernet interfaces via MII/RMII, two UTOPIA II ports for ATM SAR protocols (155 Mbps full-duplex), eight TDM interfaces, inverse multiplexing for ATM (IMA), and a transmission convergence (TC) layer-all explicitly documented as present in the MPC8280 ZU package. The 60x bus provides 64-bit data/32-bit address at up to 100 MHz, while the local bus operates at 32-bit/18-bit up to 100 MHz.

Key Specifications

Pinout & Package

The KMPC8280ZUUPEA is housed in a 480-ball thin BGA (TBGA) package with leaded solder balls (ZU code), measuring 27 mm × 27 mm with 1.27 mm ball pitch. Thermal resistance is RθJA = 16°C/W (natural convection, single-layer board) and RθJB = 6°C/W, indicating primary heat dissipation through the PCB substrate.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPC8275VR and MPC8270ZU, KMPC8280ZUUPEA uniquely delivers UTOPIA II, TC layer, IMA, and dual MCCs in the ZU package-making it the only option for new ATM/TDM convergence designs requiring hardware-accelerated cell processing and eight TDM ports without layout change.

Availability

KMPC8280ZUUPEA is available at Aetrix Electronics and suitable for ATM edge routers, TDM access gateways, industrial Ethernet switches, and secure remote terminal units requiring stable component supply across extended product lifecycles.

Supply support for KMPC8280ZUUPEA 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

Freescale Semiconductor (now part of NXP Semiconductors) was a leading designer of embedded processors and analog/mixed-signal ICs for automotive, industrial, and networking markets.

The KMPC8280ZUUPEA belongs to the PowerQUICC II family, engineered specifically for integrated communications processing in telecom infrastructure-combining a high-performance Power Architecture core with a flexible CPM for protocol offload and hardware-accelerated TDM/ATM functions.

FAQ

What is the maximum operating frequency of the KMPC8280ZUUPEA core?

The KMPC8280ZUUPEA supports a maximum core frequency of 450 MHz, achieved using the internal PLL with an 8:1 multiplication ratio applied to a 56.25 MHz CLKIN source. This frequency is validated under recommended operating conditions (VDD = 1.45–1.60 V, TA = 0–70°C, junction temperature ≤105°C) per MPC8280EC Rev. 2. The KMPC8280ZUUPEA achieves 855 Dhrystone MIPS at this speed, confirming sustained integer throughput for real-time packet processing tasks.

Does the KMPC8280ZUUPEA support USB 2.0 device mode with isochronous transfers?

Yes, the KMPC8280ZUUPEA USB controller supports full-speed (12 Mbps) and low-speed (1.5 Mbps) operation in both host and device modes, including isochronous, bulk, interrupt, and control transfers. In device mode, it implements four independent endpoints with automatic retransmission on transmit error, CRC16/CRC5 checking, and NRZI encoding/decoding with bit stuffing - all confirmed in Section 1.1 Features of MPC8280EC Rev. 2. The KMPC8280ZUUPEA does not support high-speed (480 Mbps) USB.

Is the KMPC8280ZUUPEA pin-compatible with the MPC8270ZU?

No, the KMPC8280ZUUPEA is not pin-compatible with the MPC8270ZU. Although both use the 480-ball ZU TBGA package, Table 2 of MPC8280EC Rev. 2 shows functional differences in pin assignments: KMPC8280ZUUPEA dedicates pins to UTOPIA II, TC layer signals, and second MCC resources absent in MPC8270ZU. Pinout diagrams in Section 8 confirm distinct signal mappings - e.g., UTOPIA_DA[0–7] and TC-specific control lines exist only on KMPC8280ZUUPEA.

What thermal management is required for KMPC8280ZUUPEA at 450 MHz operation?

At 450 MHz, KMPC8280ZUUPEA power dissipation reaches 1.65 W (maximum, VDD = 1.60 V, 100 MHz bus), requiring active thermal management. With RθJA = 16°C/W (natural convection), junction temperature would exceed 105°C ambient limit without enhancement. Recommended practices include using a four-layer PCB with thermal vias under the package, grounding thermal balls to inner ground planes, and adding a small heatsink or forced airflow (≥1 m/s) - per Section 4.1 and Table 6 of MPC8280EC Rev. 2. The KMPC8280ZUUPEA's RθJB = 6°C/W confirms PCB conduction is the dominant cooling path.

Does KMPC8280ZUUPEA include hardware security acceleration such as encryption engines?

No, the KMPC8280ZUUPEA does not include a Security Engine (SEC) or hardware cryptographic accelerators. Table 1 of MPC8280EC Rev. 2 explicitly lists "Security engine (SEC)" as "-" for all MPC8280 family members, including KMPC8280ZUUPEA. Encryption, authentication, and secure boot must be implemented in software on the G2_LE core or via external co-processors. Later PowerQUICC III devices (e.g., MPC8548) introduced SEC; KMPC8280ZUUPEA relies on software-based security stacks.