MPC8255AZUMHBB

Overview

The MPC8255AZUMHBB is a PowerQUICC II microprocessor utilizing the EC603e core. It features a 32-bit architecture with a maximum clock frequency of 266 MHz and operates on a 2.5 V core supply voltage. The device integrates 16 kB instruction cache, 16 kB data cache, and 24 kB RAM. It employs a 480-TBGA package and supports interfaces including Ethernet, I2C, and UART.

Feature Summary

• Dual-issue integer core supporting frequencies up to 300 MHz
• Integrated Communications Processor Module (CPM) for flexible protocol support
• Separate power supplies for internal logic and I/O
• Independent PLLs for G2 core and CPM operation

Applications

• Network routers and switches
• Multi-service access platforms
• Industrial communication gateways

Procurement Notes

Verify component authenticity through authorized channels as this part may be obsolete. Confirm RoHS compliance status and check for moisture sensitivity level requirements during storage and handling. Ensure ordering suffixes match specific hardware revisions to avoid functional discrepancies.

Selection Notes

Select based on required interface availability, specifically noting that the MPC8255 lacks PCI bridge functionality found in higher-end models. Evaluate thermal management needs given the power dissipation characteristics at target operating frequencies. Verify compatibility with existing memory controllers and bus configurations.

Part Context

This component belongs to the MPC826xA family, which includes devices like the MPC8260, MPC8264, MPC8265, and MPC8266. These processors are designed for high-performance communications applications using .25μm HiP4 technology. The MPC8255 represents a specific configuration within this series tailored for particular interface requirements.

Replacement Considerations

Direct substitutes include other members of the MPC82xxA family such as the MPC8260ACZUMHBB or MPC8264ACZUMHBB, provided interface differences like PCI presence are accounted for. Cross-referencing pinouts and electrical specifications is essential before substitution.