NXP Semiconductors MPC880CVR66

Overview

MPC880CVR66 from Freescale Semiconductor is a 32-bit Power Architecture™ microprocessor with integrated communications peripherals, featuring an 8-Kbyte instruction cache, 8-Kbyte data cache, dual 10/100 Mbps Fast Ethernet controllers (FEC), USB 2.0 full-/low-speed interface, and serial communication controllers (SCCs/SMCs) - designed for ATM edge routers, DSLAMs, and embedded networking gateways.

For engineers reviewing the MPC880CVR66 datasheet, MPC880CVR66 pinout, MPC880CVR66 application, or MPC880CVR66 equivalent, key selection criteria include its 66 MHz core frequency, 1.8-V core / 3.3-V I/O operation, 357-pin PBGA package, IEEE 1149.1 JTAG debug support, and absence of on-chip security engine - distinguishing it from the MPC885 variant.

Technical Context

The MPC880CVR66 implements a single-issue MPC8xx core with MMU, two-way set-associative caches (8 KB each), and 32-entry ITLB/DTLB supporting 4/16/512 KB and 8 MB page sizes. Its system integration unit (SIU) provides clock synthesis, periodic interrupt timer, software watchdog, and bus monitoring.

Communications are handled by a dedicated CPM with 8 KB dual-port RAM, four baud rate generators, and support for HDLC, UART, IrDA, BISYNC, and serial ATM protocols. Unlike the MPC885, the MPC880CVR66 omits the hardware security engine (AESU/DEU/MDEU) and one SCC, retaining only two Fast Ethernet controllers and serial ATM/UTOPIA capability via SCC4.

Key Specifications

Pinout & Package

The MPC880CVR66 is housed in a 357-ball PBGA package with exposed thermal pad. Ball assignment follows Freescale's standard MPC880 layout per Document MPC885EC Rev. 7, with dedicated VDDL/VDDH/GND banks, differential clock inputs (EXTAL/EXTCLK), JTAG (TCK/TMS/TDO/TDI/TRST), and multiplexed address/data bus (A[0:31]/D[0:31]).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPC885CVR66, MPC880CVR66 removes security acceleration and one SCC but retains identical cache, bus, and FEC performance - making it optimal for cost-sensitive ATM/Ethernet edge devices. Against MPC875VR66, MPC880CVR66 adds critical dual-FEC and USB connectivity for modern broadband infrastructure.

Availability

MPC880CVR66 is available at Aetrix Electronics and suitable for DSLAM line cards, ATM edge routers, industrial protocol gateways, and remote access servers requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for MPC880CVR66 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) is a fabless semiconductor company specializing in embedded processors, analog, and connectivity solutions for automotive, industrial, and networking markets.

The MPC880CVR66 belongs to the PowerQUICC family - designed specifically for integrated communications processing in carrier-class and enterprise networking equipment where deterministic real-time performance and peripheral integration are critical.

FAQ

What is the maximum operating junction temperature for the MPC880CVR66?

The MPC880CVR66 has a maximum junction temperature (TJ) of +100 °C under extended temperature grade operation. This rating is validated per Freescale's thermal characterization data in MPC885EC Rev. 7, Table 3, and assumes proper PCB thermal design with a 2s2p board and thermal vias to ground plane. Exceeding this limit risks permanent degradation of the MPC880CVR66's cache coherency logic and CPM timing margins.

Does the MPC880CVR66 support USB host mode, and what are its limitations?

Yes, the MPC880CVR66 supports USB host controller mode per its hardware specifications, enabling control, bulk, interrupt, and isochronous transfers at 12 Mbps or 1.5 Mbps. However, low-speed (1.5 Mbps) host operation requires an external hub, and the on-chip USB PHY lacks integrated ULPI or UTMI+ interface - limiting direct connection to standard USB 2.0 transceivers. The MPC880CVR66 USB host does not support OTG negotiation.

How does the MPC880CVR66 differ from the MPC885CVR66 in terms of security functionality?

The MPC880CVR66 omits the hardware security engine entirely - meaning it lacks the AESU, DEU, and MDEU accelerators present in the MPC885CVR66. Consequently, the MPC880CVR66 cannot perform hardware-accelerated DES/3DES, AES-128/192/256, SHA-1/256, or MD5 operations. All cryptographic processing for protocols like IPsec or SSL must be implemented in software on the MPC880CVR66, increasing CPU load and reducing throughput compared to the MPC885CVR66.

What power supply sequencing is required for reliable startup of the MPC880CVR66?

The MPC880CVR66 requires VDDL (1.8 V) to ramp no faster than VDDH (3.3 V) during power-up and power-down; VDDL must never exceed VDDH. Freescale specifies a maximum 100 mV difference between VDDL and VDDSYN. Violating this causes forward biasing of internal ESD diodes, risking latch-up or long-term reliability failure. A discrete sequencing circuit using MUR420 Schottky diodes (per Figure 5 in MPC885EC Rev. 7) is recommended for systems lacking tightly regulated supplies.

Can the MPC880CVR66 operate in 2:1 bus mode at 66 MHz core frequency?

No - the MPC880CVR66's 66 MHz core frequency only supports 1:1 bus mode, where CPU and external bus clocks run synchronously. The 2:1 mode (CPU clock = 2 × bus clock) is reserved for the 133 MHz core variant per Table 5 in MPC885EC Rev. 7. Attempting 2:1 mode at 66 MHz would violate timing constraints on the MPC880CVR66's memory controller and CPM interface, leading to data corruption or bus lockup.