72221L10PFGI8

Overview

The 72221L10PFGI8 is a 1K x 9 synchronous FIFO memory device manufactured by Renesas Electronics Corporation. It operates with independent read and write clocks, supporting dual-clock asynchronous operation or single-clock synchronization. The component features a zero fall-through time architecture and provides programmable Almost-Empty and Almost-Full flags for buffer management. It is available in a 32-pin TQFP package and supports an industrial temperature range of –40°C to +85°C.

Feature Summary

• Dual-port zero fall-through time architecture allows simultaneous independent read and write operations without data loss.
• Programmable status flags enable precise monitoring of buffer levels through configurable Almost-Empty and Almost-Full signals.
• Flexible clocking supports both single-clock and asynchronous dual-clock modes for diverse system timing requirements.

Applications

• Graphics data buffering
• Local area network interfaces
• Interprocessor communication

Procurement Notes

Verify the specific suffix 'GI8' against official Renesas documentation to confirm the exact temperature grade and lead-free status, as suffixes define these critical manufacturing attributes. Confirm current production status, as this part number may be obsolete or subject to replacement notices. Ensure compatibility with existing PCB footprints for the 32-pin TQFP package before procurement.

Selection Notes

Select this component when a 1K x 9 depth is required for synchronous data buffering with independent clock domains. The industrial temperature range makes it suitable for harsh environments. Consider the zero fall-through latency for applications requiring immediate data availability upon read assertion. Verify voltage supply requirements align with the 5.0V specification typical for this series.

Part Context

This device belongs to the 72221 SyncFIFO family, designed for high-speed data buffering. It shares architectural similarities with other members like the 72221L10J but differs in package type (TQFP vs PLCC) and potentially temperature rating. The family is characterized by its simple interface and reliable FIFO logic for temporary data storage between asynchronous systems.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided source material. Consult official Renesas PCN documents for potential obsolescence replacements.