MPC852TZT66A

Overview

The MPC852TZT66A is a 32-bit microprocessor based on the PowerQUICC family, utilizing an embedded MPC8xx core. It operates at a maximum core frequency of 100 MHz with a 66 MHz external bus interface. The device features a 1.8 V core voltage and 3.3 V I/O operation with 5-V TTL compatibility. Key specifications include 4-Kbyte instruction and data caches, a 32-entry TLB, and an integrated Fast Ethernet Controller (FEC). It incorporates a Communications Processor Module (CPM) with 8-Kbytes of dual-port RAM and supports various serial interfaces.

Feature Summary

• Integrates an MPC8xx processor core with MMUs and cache memory for efficient code execution
• Includes a dedicated Communications Processor Module (CPM) to offload communication tasks
• Features a Fast Ethernet Controller (FEC) supporting 10-Mbps operations
• Provides multiple serial communication controllers including SCCs, SMC, and SPI

Applications

• Ethernet routers and hubs
• VoIP clients
• WiFi access points
• CPE equipment

Procurement Notes

Verify the specific suffix 'ZT66A' against official NXP documentation to confirm the exact speed grade and package variant. Ensure that power supply sequencing meets the requirement where VDDL must not exceed VDDH during power-on reset. Confirm thermal management strategies align with the specified junction-to-ambient resistance values for the target operating temperature range.

Selection Notes

Select this component for applications requiring high integration of Ethernet and serial communication functions within a single chip. Consider the 1.8V core and 3.3V I/O requirements when designing the power delivery network. Evaluate the CPM capabilities if significant protocol processing overhead needs to be removed from the main CPU core. Ensure the PCB layout supports the necessary bypassing and trace length constraints for signal integrity.

Part Context

The MPC852T belongs to the PowerQUICC family derived from the MPC860 architecture. It is designed as a subset of the broader MPC866 family, focusing on controller applications. The device leverages PowerPC architecture technology to deliver communications processing performance suitable for networking infrastructure.

Replacement Considerations

Consult the MPC866 PowerQUICC Family Reference Manual for potential derivative comparisons. Verify functional compatibility with other MPC8xx series processors before substitution.