NXP Semiconductors MC8641VJ1333JE

Overview

MC8641VJ1333JE from Freescale Semiconductor is a single-core Power Architecture® e600-based integrated host processor with 32-Kbyte L1 instruction and data caches, 1-Mbyte unified L2 cache with ECC, dual 64-bit DDR/DDR2 SDRAM controllers (72-bit with ECC), four enhanced three-speed Ethernet controllers (10/100/1000 Mbps), PCI Express 1.0a (x1/x2/x4/x8), Serial RapidIO 1.2 (1x/4x, 2.5 Gbps/lane), and integrated DMA, MPIC, I²C, DUART, and JTAG. It targets networking infrastructure, wireless base stations, and storage control applications.

For engineers reviewing the MC8641VJ1333JE datasheet, MC8641VJ1333JE pinout, MC8641VJ1333JE application, or MC8641VJ1333JE equivalent, this page delivers verified specifications, validated package mapping, confirmed pin functions, real-world use scenarios, and two technically documented alternative parts for embedded communications system design.

Technical Context

The MC8641VJ1333JE implements a superscalar e600 core with eleven execution units, separate MMUs for instruction and data, 36-bit real addressing, and hardware support for multiprocessing and performance monitoring. Its memory subsystem includes dual DDR/DDR2 controllers supporting up to 300-MHz clock rates and 600-MHz DDR2 operation, with cache line and page interleaving across controllers.

Connectivity is provided via four eTSECs compliant with IEEE 802.3/802.3u/802.3ab, supporting MII/RGMII/TBI interfaces and TCP/IP offload; one PCI Express 1.0a interface (2.5 Gbaud per lane); and one Serial RapidIO 1.2 interface (1.25–3.125 Gbaud, 1x/4x). The device uses a 1023-pin FC-CBGA package with Hi-CTE ceramic substrate.

Key Specifications

Pinout & Package

MC8641VJ1333JE is housed in a 1023-pin Flip-Chip Ceramic Ball Grid Array (FC-CBGA) with High Coefficient of Thermal Expansion (Hi-CTE) ceramic substrate, designed for high-reliability thermal cycling in telecom and industrial environments.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MC8641VJ1333JE, MPC8641DZQ1333JE adds a second e600 core but increases thermal design complexity, while P2020NXE2KFC shifts to DDR3 and drops RapidIO-making both alternatives suitable only for redesigned systems with updated power, thermal, and memory architecture.

Availability

MC8641VJ1333JE is available at Aetrix Electronics and suitable for wireless infrastructure, enterprise storage, and network security applications requiring stable component supply across extended product lifecycles.

Supply support for MC8641VJ1333JE 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 processing, analog, and connectivity solutions for automotive, industrial, and networking markets.

The MPC8641 product line was engineered as a high-performance integrated host processor for carrier-grade communications equipment, combining Power Architecture compute with multi-protocol I/O to replace discrete chipset solutions in base station and edge router designs.

FAQ

What is the maximum DDR2 data rate supported by the MC8641VJ1333JE?

The MC8641VJ1333JE supports DDR2 SDRAM at up to 600 MHz data rate (300 MHz clock), with dual 64-bit interfaces delivering up to 16 GB per channel. This is confirmed in Section 6 of the hardware specifications document, which states "Support of up to a 300-MHz clock rate and a 600-MHz DDR2 SDRAM." The MC8641VJ1333JE achieves this using SSTL-18 signaling with Dn_MVREF = Dn_GVDD/2 ± 1%.

Does the MC8641VJ1333JE support PCI Express Gen2?

No, the MC8641VJ1333JE supports only PCI Express 1.0a at 2.5 Gbaud per lane (2.0 Gbps per lane), as explicitly stated in Section 14 of the hardware specifications. It does not implement Gen2 (5.0 Gbaud) or Gen3 features. Any design requiring PCIe Gen2 must select a newer-generation processor, as the MC8641VJ1333JE's PCIe block is fixed to 1.0a compliance.

What is the function of the HRESET signal on the MC8641VJ1333JE?

HRESET is the active-low hard reset input that initiates full device initialization, including PLL relock, memory controller calibration, and register reset. Per Section 5, it must be asserted for ≥100 µs after power supplies stabilize, and configuration pins must meet setup/hold timing relative to HRESET negation. The MC8641VJ1333JE requires stable SYSCLK before HRESET deassertion and uses HRESET to synchronize boot sequencing across all internal modules.

Can the MC8641VJ1333JE operate with DDR2 memory only, without DDR support?

Yes, the MC8641VJ1333JE supports DDR2 exclusively in configurations where DDR is disabled. Section 6 confirms "Support for DDR, DDR2 SDRAM" as independent modes, and Table 2 specifies separate recommended voltages: 1.8 V ± 90 mV for DDR2 (vs 2.5 V ± 125 mV for DDR). The DDR/DDR2 controllers are logically distinct, allowing DDR2-only operation with D1_GVDD/D2_GVDD = 1.8 V and Dn_MVREF = 0.9 V ± 1%.

What thermal management guidance applies to the MC8641VJ1333JE?

The MC8641VJ1333JE has a maximum junction temperature of 105°C and requires a thermal solution capable of dissipating up to 23.2 W in maximum power mode at 1333 MHz (Table 6). Section 19 specifies thermal resistance values and recommends a copper-core heatsink with forced airflow. The FC-CBGA package uses Hi-CTE ceramic to match PCB expansion, reducing solder fatigue-critical for telecom base station deployments with wide ambient swings.