SST39VF040-70-4I-WHE-T

Memory IC Overview

The Microchip Technology SST39VF040-70-4I-WHE-T is a 4 Mbit (512K x 8) CMOS Multi-Purpose Flash memory manufactured using SuperFlash technology. It operates with a single voltage supply of 2.7V to 3.6V and features an asynchronous parallel interface with a maximum access time of 70 ns. The device supports uniform 4 KByte sector erasure, byte-programming, and chip erasure via software command sequences. It includes hardware and software data protection schemes, end-of-write detection through Toggle Bit and Data# Polling, and is housed in a 32-lead TSOP package suitable for industrial temperature ranges.

Memory IC Feature Summary

• Utilizes proprietary SuperFlash technology with split-gate cell design for enhanced reliability and manufacturability compared to alternative approaches.
• Supports fast asynchronous read access times and provides sector erase, chip erase, and byte program operations initiated by standard microprocessor write sequences.
• Incorporates comprehensive data protection mechanisms including noise/glitch protection, VDD power up/down detection, and JEDEC approved Software Data Protection schemes.

Memory IC Applications

• Applications requiring convenient and economical updating of program, configuration, or data memory.
• Systems needing low power consumption during erase and program operations.
• Industrial environments requiring reliable non-volatile storage with wide operating temperature ranges.

Memory IC Procurement Notes

Verify the specific ordering suffix 'WHE-T' against the manufacturer's current documentation to confirm package type and tape-and-reel availability. Ensure that the industrial temperature range (-40°C to +85°C) and 2.7V-3.6V supply requirements align with the target system design specifications before procurement.

Memory IC Selection Notes

Select this component when a 4 Mbit capacity with 70 ns access speed is required for parallel interface applications. It is suitable for designs utilizing 2.7V to 3.6V logic levels and requiring robust data retention and endurance characteristics typical of SuperFlash technology.

Memory IC Part Context

This part belongs to the SST39VF series of Multi-Purpose Flash memories from Microchip Technology. It shares architectural similarities with the SST39LF series but differs in its lower voltage operation capability, allowing write operations at 2.7V to 3.6V compared to the 3.0V to 3.6V requirement of the LF variants.

Memory IC Replacement Considerations

SST39VF040-70-4C-WHE-T