PM7389-BI

Overview

The PM7389-BI is an Application Specific Microcontroller manufactured by PMC-Sierra, designed for embedded control applications. It features a single-chip multi-channel HDLC controller architecture. The device utilizes CMOS technology and operates at a nominal supply voltage of 3.3 V. It is housed in a PBGA-352 package with dimensions of 35 x 35 mm and a height of 1.45 mm. The component supports an industrial temperature range from -40 °C to 85 °C and contains 352 terminals with a pitch of 1.27 mm.

Feature Summary

• Integrates a single-chip multi-channel HDLC controller for embedded communication tasks
• Utilizes CMOS technology for efficient signal processing within the microcontroller architecture

Applications

• Embedded system control
• HDLC communication interface management

Procurement Notes

Verify the specific revision level and manufacturing date code upon procurement to ensure compatibility with existing system designs. Confirm that the SBGA-352 package footprint matches the PCB layout requirements. Check for RoHS compliance status as indicated in the official datasheet to meet environmental regulations. Ensure proper handling procedures are followed due to the moisture sensitivity level associated with the plastic/epoxy package material.

Selection Notes

Select this component when a dedicated hardware solution for multi-channel HDLC protocol handling is required within an embedded environment. Consider the 3.3 V operating voltage and industrial temperature range (-40 °C to 85 °C) against system constraints. Evaluate the physical space available for the 35 x 35 mm PBGA-352 package during the initial design phase to accommodate the 352-terminal grid array structure.

Part Context

The PM7389-BI belongs to the PMC-Sierra portfolio of application-specific integrated circuits. It serves as a specialized controller for high-level data link control protocols. The part is distinct from general-purpose microcontrollers by its focus on HDLC channel management. It represents a legacy solution from PMC-Sierra, which was later acquired by Microsemi and subsequently by Microchip Technology.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Due to the specialized nature of the HDLC controller and the acquisition history of PMC-Sierra, direct pin-to-pin replacements may require verification through official Microchip or Microsemi technical support channels.