SST49LF008A-33-4C-NHE-T

Memory IC Overview

The SST49LF008A-33-4C-NHE-T is an 8 Mbit (1024K x 8) SuperFlash memory device manufactured by Microchip Technology. It operates on a single 3.0V to 3.6V supply and supports two interface modes: Firmware Hub (FWH) for in-system programming and Parallel Programming (PP) for factory use. The FWH mode utilizes a 5-signal interface with a 33 MHz clock, while PP mode uses an 11-pin multiplexed address and 8-bit data I/O. Key electrical parameters include a typical active read current of 6 mA and standby current of 10 µA. Endurance is rated at 100,000 cycles with over 100 years data retention.

Memory IC Feature Summary

• Supports Firmware Hub Interface mode for in-system operation and Parallel Programming mode for fast production programming.
• Features flexible erase capability with uniform 4 KByte sectors, 64 KByte overlay blocks, and top boot block protection.
• Provides hardware write protection via WP# and TBL# pins alongside software data protection schemes.
• Includes five general-purpose inputs for system design flexibility and four ID pins for multi-chip selection.

Memory IC Applications

• PC-BIOS applications requiring read-compatibility with Intel 82802 Firmware Hub devices.
• In-system programming of firmware and code storage.
• Fast factory programming of PC-BIOS applications using parallel programming mode.

Memory IC Procurement Notes

Verify the specific package type required, as the SST49LF008A is available in 32-lead PLCC, 32-lead TSOP, and 40-lead TSOP configurations. Confirm that the ordering suffix corresponds to the desired lead-free and RoHS compliant status. Ensure the IC pin configuration matches the intended operational mode before integration into the design.

Memory IC Selection Notes

Select this component when read-compatibility with Intel Firmware Hub architectures is necessary. It is suitable for designs requiring high reliability with superior endurance compared to alternative flash technologies. Consider the power consumption benefits of SuperFlash technology for low-power applications. Verify that the system voltage range aligns with the 3.0V to 3.6V operating specification.

Memory IC Part Context

This device belongs to the SST49LF008A series of 8 Mbit Firmware Hub memories. It is part of Microchip's portfolio of non-volatile storage solutions designed for embedded systems. The SuperFlash technology offers improved performance and reliability over traditional flash memory approaches, making it a robust choice for critical code and data storage in industrial and consumer electronics.

Memory IC Replacement Considerations

The datasheet states the device is designed to be read-compatible with the Intel 82802 Firmware Hub device. No other specific substitute part numbers are provided in the source material.