MPC855TZQ66D4

Microprocessors Overview

The MPC855TZQ66D4 is a microprocessor from the PowerQUICC III family, manufactured by NXP Semiconductors following the acquisition of Freescale Semiconductor. It integrates a single-core PowerPC processor with a 32-bit data bus width and operates at a maximum clock frequency of 66 MHz. The device utilizes a PBGA-357 package for surface mount installation. It features 4 kB L1 instruction cache and 4 kB L1 data cache. The operating supply voltage is 3.3 V, with an I/O voltage of 3.3 V. The component supports interfaces including Ethernet, I2C, SPI, and UART. It includes four timers/counters and a watchdog timer. The operational temperature range spans from 0°C to +95°C.

Microprocessors Feature Summary

• Integrates a PowerPC core within the PowerQUICC III embedded processor family
• Supports industry-standard communication interfaces such as Ethernet, I2C, SPI, and UART
• Includes system-level logic for networking and telecommunications infrastructure applications

Microprocessors Applications

• Networking infrastructure systems
• Telecommunications equipment
• Wireless infrastructure applications

Microprocessors Procurement Notes

Verify part authenticity through authorized channels due to potential obsolescence status. Confirm package integrity and pin alignment for the PBGA-357 form factor. Ensure compatibility with existing 3.3 V power domains and interface protocols. Review official documentation for any errata or hardware revisions affecting functionality. Validate thermal performance within the specified 0°C to +95°C operating range during integration.

Microprocessors Selection Notes

Select this component for applications requiring integrated communications processing capabilities within the Power Architecture ecosystem. Consider the 66 MHz clock speed and 3.3 V operation when designing power and timing constraints. Evaluate the PBGA-357 package size against board space limitations. Verify that the available L1 cache sizes meet the real-time processing requirements of the target application.

Microprocessors Part Context

This microprocessor belongs to the PowerQUICC III series, which combines PowerPC processor cores with system logic for embedded communications. The brand transitioned from Freescale Semiconductor to NXP Semiconductors after the merger completed in late 2015. Devices in this family are designed for high-performance networking and telecom roles, offering a balance of processing power and peripheral integration.

Microprocessors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material.