NXP Semiconductors MPC8540VT833LB

Overview

MPC8540VT833LB from Freescale Semiconductor is a PowerQUICC III integrated host processor featuring a 32-bit e500 Power Architecture core, 256 KB on-chip L2 cache/SRAM configurable as full cache, full SRAM, or split mode, dual 10/100/1000 Mbps TSEC Ethernet controllers, DDR-1 SDRAM controller (64-bit, up to 333 MHz), PCI/PCI-X (64-bit, 133 MHz), and RapidIO (8-bit, 500 MHz data rate). It targets high-throughput networking infrastructure control planes.

For engineers reviewing the MPC8540VT833LB datasheet, MPC8540VT833LB pinout, MPC8540VT833LB application, or MPC8540VT833LB equivalent, key selection criteria include its 833 MHz core frequency, 783-pin FC-PBGA package, dual TSEC support with RGMII/GMII/TBI interfaces, DDR-1 memory controller with ECC, and integrated OCeaN packet switch for internal interconnect - all critical for telecom line-card and wireless baseband processing designs.

Technical Context

The MPC8540VT833LB implements the Book E–enhanced e500 core with 32 KB L1 instruction and 32 KB L1 data caches (parity-protected), MMU optimized for embedded real-time OS environments, and performance monitor facility supporting eight 32-bit event counters. Its coherency module enables cache snooping across local bus, PCI-X, and RapidIO masters.

System-level integration includes an ATMU with eight local access windows and configurable inbound/outbound translations for PCI-X and RapidIO, a programmable DDR-1 controller with auto-refresh, CKE-based power management, and registered DIMM support, plus an OCeaN four-port crossbar switch enabling priority-based packet reordering between TSEC, RapidIO, and PCI-X domains.

Key Specifications

Pinout & Package

The MPC8540VT833LB is housed in a 783-ball Fine-Pitch Ceramic Ball Grid Array (FC-PBGA) package with 1.0 mm ball pitch, designed for high-speed signal integrity and thermal dissipation in telecom infrastructure applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MPC8548ECVTA833B, the MPC8540VT833LB lacks hardware security acceleration but consumes less power and has simpler power sequencing; versus P1022NSN2HFB, it offers proven RapidIO/PCI-X interoperability but no DDR2/3 or PCIe support - making it the preferred choice for sustaining existing telecom control-plane platforms.

Availability

MPC8540VT833LB is available at Aetrix Electronics and suitable for wireless infrastructure, telecom line cards, and industrial gateways requiring stable component supply, long-term lifecycle support, and traceable sourcing for mission-critical deployments.

Supply support for MPC8540VT833LB 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 MPC8540VT833LB belongs to the PowerQUICC III family, designed specifically for high-performance, integrated control-plane processing in networking and telecommunications infrastructure where deterministic latency, multi-protocol I/O, and reliability are paramount.

FAQ

What is the maximum DDR-1 SDRAM data rate supported by the MPC8540VT833LB?

The MPC8540VT833LB supports a DDR-1 SDRAM interface with a maximum data rate of 333 MHz, delivering up to 2.66 GB/s bandwidth on its 64-bit bus. This is confirmed in Section 6 of the MPC8540 Hardware Specifications Rev. 4.1, which specifies programmable timing for DDR-1 SDRAM, four-bank support, and full ECC protection. The MPC8540VT833LB does not support DDR2 or DDR3 memory standards.

Does the MPC8540VT833LB include hardware cryptographic acceleration?

No, the MPC8540VT833LB does not include a Security Engine (SEC) or dedicated hardware cryptographic accelerators. Unlike the MPC8548ECVTA833B - which integrates SEC for AES, DES, SHA, and RSA offload - the MPC8540VT833LB relies on software-based encryption. This is explicitly stated in the feature comparison between MPC8540 and MPC8548 in Freescale documentation, confirming MPC8540VT833LB's focus on I/O integration rather than crypto acceleration.

What package type and pin count does the MPC8540VT833LB use?

The MPC8540VT833LB uses a 783-ball Fine-Pitch Ceramic Ball Grid Array (FC-PBGA) package with 1.0 mm ball pitch, as documented in Section 14 "Package and Pin Listings" of the MPC8540 Hardware Specifications Rev. 4.1. This package is thermally and electrically optimized for high-speed routing in dense telecom PCB layouts and is distinct from smaller PBGA or QFP variants used in other PowerQUICC devices.

Can the MPC8540VT833LB operate with both 2.5 V and 3.3 V I/O voltage levels?

Yes, the MPC8540VT833LB supports mixed I/O voltages: GVDD is fixed at 2.5 V for DDR, LVDD is configurable at either 2.5 V or 3.3 V for TSEC/FEC interfaces, and OVDD is 3.3 V for PCI/PCI-X, Local Bus, RapidIO, and JTAG. Table 2 in the Electrical Characteristics section confirms LVDD tolerances of ±165 mV at 3.3 V or ±125 mV at 2.5 V, enabling flexible PHY interface selection (e.g., RGMII at 2.5 V or GMII at 3.3 V) without level-shifting.

What is the function of the OCeaN switch fabric in the MPC8540VT833LB?

The OCeaN (On-Chip Ethernet and Networking) switch fabric in the MPC8540VT833LB is a four-port crossbar packet switch that manages internal traffic arbitration between major subsystems - including the two TSECs, RapidIO interface, PCI/PCI-X controller, and local bus. As described in Section 1.1 Overview, it performs priority-based packet reordering, starvation avoidance, and bypass routing to eliminate inter-block contention, ensuring deterministic latency for time-critical control-plane packet flows within the MPC8540VT833LB itself.