MPC850DECVR66BU

Overview

The MPC850DECVR66BU is a PowerQUICC integrated communications processor featuring an embedded single-issue, 32-bit MPC8xx core. It includes two serial communications controllers (SCCs), one USB channel, two serial management controllers (SMCs), one I2C port, and one SPI interface. The device integrates an 8-Kbyte dual-port RAM, a 2-Kbyte instruction cache, and a 1-Kbyte data cache. Operating at 66 MHz with a 3.3 V supply, it utilizes a PGBA-256 package.

Feature Summary

• Integrates a specialized independent RISC communications processor to off-load peripheral tasks from the main core.
• Supports Ethernet, ATM, HDLC, PPP, AppleTalk, UART, IrDA, and transparent modes via its serial controllers.
• Features a universal serial bus controller supporting host and slave modes for high-speed connectivity.
• Includes a versatile memory controller compatible with DRAM, SRAM, and flash EPROM.

Applications

• Cost-sensitive remote-access networking products
• Telecommunications equipment
• Controller applications requiring protocol processing

Procurement Notes

Verify the specific suffix 'DE' indicates dual SCC support against official documentation. Confirm the 'V' speed grade corresponds to the required 66 MHz operational frequency. Ensure the 'BU' package designation matches the target PCB footprint requirements. Check current availability status as this component may be discontinued or subject to long lead times.

Selection Notes

Select this model when dual serial communications controllers are required alongside USB support. Compare against the standard MPC850 if only a single SCC is needed. Consider the MPC850SR or DSL variants if ATM support is necessary. Verify that the 8-Kbyte internal RAM meets system buffer requirements before selecting external memory solutions.

Part Context

This component belongs to the MPC850 family of PowerQUICC processors designed by Freescale Semiconductor. The family targets communications and networking markets with varying levels of peripheral integration. The MPC850DECVR66BU represents a specific configuration within this series optimized for multi-channel serial communication tasks.

Replacement Considerations

MPC850CVR66BU

FAQ

What distinguishes the MPC850DE from the standard MPC850?

The MPC850DE variant supports two serial communications controllers (SCCs), whereas the standard MPC850 supports only one.

Does the MPC850DECVR66BU support Asynchronous Transfer Mode (ATM)?

No, according to the functionality matrix, the MPC850DE does not support ATM; this feature is reserved for the MPC850SR and MPC850DSL models.