MPC8264ACZUMIBB

Overview

The MPC8264ACZUMIBB is a PowerQUICC II integrated communications processor from the MPC826xA family. It features a dual-issue EC603e core with an FPU, operating at frequencies up to 300 MHz. The device includes a 32-bit Communications Processor Module (CPM) with 32-Kbyte dual-port RAM and ATM TC layer hardware for inverse multiplexing. Key interfaces include a 64-bit 60x bus, a 32-bit local bus, three Fast Communications Controllers (FCCs), two Multichannel Controllers (MCCs), four Serial Communications Controllers (SCCs), and eight TDM ports.

Feature Summary

• Integrated ATM TC layer hardware supporting inverse multiplexing capabilities
• Dual-issue integer core with floating-point unit and separate power supplies
• Communications Processor Module with dedicated DMA and serial channels
• Multiple high-speed serial controllers including FCCs, MCCs, and SCCs

Applications

• ATM network infrastructure equipment
• High-performance telecommunications gateways
• Digital signal processing systems requiring TDM interfaces

Procurement Notes

Verify the specific ordering suffix against official NXP documentation to confirm package type, temperature range, and lead-free status. Ensure compatibility with required voltage levels and clock configurations before procurement. Cross-reference datasheet revision numbers to validate electrical characteristics.

Selection Notes

Select this component for applications requiring integrated ATM processing and high-throughput serial communication. Consider the separate PLLs for independent core and CPM frequency optimization. Evaluate thermal requirements as power dissipation increases significantly at higher clock speeds.

Part Context

This part belongs to the MPC826xA family of PowerQUICC II processors. It shares architectural similarities with the MPC8260, MPC8255, and MPC8265 but offers specific feature sets such as the ATM TC layer not present in all family members. It is designed for embedded communications environments.

Replacement Considerations

Consult official substitution lists for compatible devices within the MPC82xx series. Verify pinout and register compatibility when considering alternatives like the MPC8260 or MPC8265.