MPC852TZT80A

Overview

The MPC852TZT80A is a PowerQUICC derivative microprocessor based on the MPC8xx core. It operates at up to 100 MHz with a 66-MHz external bus, utilizing a 1.8-V core and 3.3-V I/O voltage with 5-V TTL compatibility. The device integrates an embedded MPC8xx processor, System Integration Unit (SIU), and Communications Processor Module (CPM). Key specifications include a 32-bit data bus, eight memory banks, Fast Ethernet Controller (FEC), PCMCIA interface, two Serial Communication Controllers (SCCs), one Serial Management Channel (SMC), and SPI support.

Feature Summary

• Integrates an embedded MPC8xx core with instruction and data caches for high-performance processing.
• Includes a versatile Communications Processor Module (CPM) with dual-port RAM and serial DMA channels.
• Features a Fast Ethernet Controller (FEC) optimized for Ethernet control applications.
• Provides multiple communication interfaces including PCMCIA, SCCs, SMC, and SPI.

Applications

• Ethernet routers and hubs
• VoIP clients
• WiFi access points
• Customer Premises Equipment (CPE)

Procurement Notes

Verify the specific suffix 'ZT80A' against official NXP documentation to confirm package type and temperature range. Confirm current availability status as older MPC852T variants may be discontinued or subject to long-lead times. Ensure power supply sequencing meets the requirement that VDDL does not exceed VDDH during power-on reset.

Selection Notes

Select this component for applications requiring integrated communications controllers with Ethernet capabilities. Consider the 1.8-V core and 3.3-V I/O requirements for power budgeting. Evaluate thermal performance using junction-to-ambient resistance values if operating in natural convection environments without active cooling.

Part Context

The MPC852T belongs to the Freescale/NXP PowerQUICC family of processors. It is a subset of the MPC860 Quad Integrated Communications Controller, designed specifically for controller applications. The architecture is based on the PowerPC standard, providing MMUs and cache coherence for efficient system integration.

Replacement Considerations

Consult official NXP/Freescale product summaries for direct substitutes within the MPC85xx family. Verify pinout and electrical compatibility before replacing with derivatives like MPC852TVR100.