MPC850CZQ50BU

Overview

The MPC850CZQ50BU is a PowerQUICC integrated communications processor featuring an embedded single-issue, 32-bit MPC8xx core operating at 50 MHz. It utilizes a 256-pin PBGA package and supports 3.3V I/O with 5-V TTL compatibility. The device integrates a Communications Processor Module (CPM) with up to 8 Kbytes of dual-port RAM, offloading peripheral tasks from the main core. Key peripherals include Ethernet support, USB 1.x, PCMCIA-ATA, and multiple serial controllers.

Feature Summary

• Integrates a high-performance embedded MPC8xx core with Harvard architecture caches and MMU for efficient instruction and data processing.
• Features a dedicated 32-bit RISC Communications Processor Module (CPM) that handles protocol-specific tasks via independent command sets.
• Supports versatile memory interfaces including glueless connections to DRAM, SDRAM, SRAM, and flash EPROM with programmable block sizes.
• Includes comprehensive communication channels such as Ethernet, USB, PCMCIA-ATA, and multiple serial controllers (SCCs, SMCs, SPI, I2C).

Applications

• Cost-sensitive remote-access networking equipment
• Telecommunications controller applications
• Communications and networking products requiring integrated peripheral handling

Procurement Notes

Verify component authenticity through authorized NXP distributors or certified supply chain partners. Confirm the specific suffix 'ZQ50BU' matches the required package type and speed grade. Check for RoHS compliance status as indicated in official documentation, noting potential variations between manufacturing sites. Ensure storage conditions adhere to moisture sensitivity level requirements prior to soldering.

Selection Notes

Select this component when a balance of processing power and integrated communication peripherals is required for cost-sensitive designs. The MPC850 is suitable for applications needing Ethernet and USB connectivity without external bridge chips. Consider the static design capabilities and low-power modes if energy efficiency during idle states is a critical system requirement.

Part Context

The MPC850 belongs to the PowerQUICC family of integrated communications processors designed by Freescale Semiconductor (now NXP). It shares functional similarities with the MPC860 but offers specific enhancements such as USB support and a larger dual-port RAM configuration. This series targets the embedded communications market with high integration levels.

Replacement Considerations

Consult official NXP documentation for direct pin-to-pin replacements or upgraded successors within the MPC8xx family. Verify software compatibility and peripheral register mappings before substituting with other variants like the MPC850DE or MPC850SR.