SST49LF080A-33-4C-NHE-T

Memory IC Overview

The SST49LF080A-33-4C-NHE-T is an 8 Mbit (1024K x 8) LPC Interface Flash manufactured by Microchip Technology using SuperFlash technology. It operates on a single 3.0V to 3.6V supply and supports two modes: Low Pin Count (LPC) for in-system operation and Parallel Programming (PP) for production programming. The device features uniform 4 KByte sectors, 64 KByte overlay blocks, and a 64 KByte Top Boot Block with hardware write protection via TBL# and WP# pins. It complies with Intel LPC Interface Specification 1.0 and offers fast sector-erase and byte-program operations.

Memory IC Feature Summary

• Supports dual interface modes including LPC for system operation and Parallel Programming for fast production programming.
• Provides flexible erase capability with uniform 4 KByte sectors and 64 KByte overlay blocks.
• Includes hardware write protection for the top boot block and entire chip via dedicated control pins.
• Utilizes proprietary SuperFlash technology for superior reliability and low power consumption.

Memory IC Applications

• PC and Internet Appliance applications compliant with Intel LPC Interface Specification 1.0
• In-system firmware storage and updates
• Production programming environments

Memory IC Procurement Notes

Verify that the specific ordering suffix matches the required package type, as this part number is available in both 32-lead PLCC and 32-lead TSOP configurations. Confirm the temperature grade corresponds to your operational environment requirements. Ensure compatibility with the host system's LPC bus protocol and voltage levels before integration.

Memory IC Selection Notes

Select this component when an 8 Mbit capacity is required for LPC-compliant systems. It is suitable for designs needing hardware write protection for boot code. Consider the package availability if surface-mount constraints apply. Verify that the host controller supports the necessary ID strapping for multiple device selection if expanding memory density.

Memory IC Part Context

This device belongs to the SST49LF series of LPC Flash memories. It is designed to replace older parallel flash devices in modern PC architectures by reducing pin count while maintaining high performance. The SuperFlash technology differentiates it from standard NOR flash by offering better endurance and lower energy consumption during program and erase cycles.

Memory IC Replacement Considerations

Direct replacements must support the same 8 Mbit density and LPC interface. Check for compatible packages such as 32-lead PLCC or TSOP. Ensure the substitute device supports the same voltage range and command set for seamless migration.