MPC850SRZQ50BU

Overview

The MPC850SRZQ50BU is a PowerQUICC integrated communications processor featuring an embedded 32-bit MPC8xx core operating at 50 MHz. It includes two Serial Communications Controllers (SCCs) supporting Ethernet, ATM, and HDLC protocols. The device integrates a USB 1.x controller, dual-port RAM, and a Communications Processor Module (CPM). It utilizes a 256-pin PBGA package with 3.3V I/O levels.

Feature Summary

• Integrates a high-performance embedded MPC8xx core with independent Communications Processor Module for peripheral offloading
• Supports multiple serial protocols including Ethernet, Asynchronous Transfer Mode, and High-Level Data Link Control via dual SCCs
• Includes Universal Serial Bus controller compatible with host and slave modes
• Features versatile memory controller supporting DRAM, SRAM, and flash interfaces

Applications

• Telecommunications equipment
• Remote access systems
• Cost-sensitive networking products

Procurement Notes

Verify the specific suffix ZQ50BU against official NXP documentation to confirm pinout, speed grade, and package dimensions. Confirm RoHS compliance status as historical data may vary by manufacturing date. Ensure thermal management design accounts for junction temperature limits specified in the datasheet.

Selection Notes

Select this component when system requirements include ATM support alongside standard Ethernet connectivity. The dual SCC architecture allows flexible protocol handling for telecommunications applications. Verify that the 50 MHz clock speed meets real-time processing demands for the intended communication stack.

Part Context

This part belongs to the MPC850 family of PowerQUICC processors designed for embedded communications. It shares architectural similarities with the MPC860 but adds USB support and enhanced dual-port RAM capabilities. The SR variant specifically denotes support for Asynchronous Transfer Mode protocols.

Replacement Considerations

Consult official NXP substitution guides for verified alternatives. Generic cross-references are not supported due to specific peripheral configurations.