SST39VF400A-70-4I-C1QE

Memory IC Overview

The SST39VF400A-70-4I-C1QE is a 4 Mbit (256K x 16) CMOS Multi-Purpose Flash manufactured using SuperFlash technology. It operates on a single voltage supply of 2.7V to 3.6V and features an asynchronous parallel interface with a typical access time of 70 ns. The device supports sector, block, and chip erase operations, along with word programming. It includes hardware and software data protection schemes, automatic write timing, and end-of-write detection via Toggle Bit or Data# Polling.

Memory IC Feature Summary

• SuperFlash Technology for enhanced reliability and lower power consumption during erase and program operations
• Uniform sector architecture supporting 2 KWord sectors and 32 KWord blocks
• Integrated Software Data Protection and Hardware Write Inhibit modes to prevent inadvertent writes
• JEDEC standard pinouts and command sets compatible with x16 memories

Memory IC Applications

• System applications requiring economical updating of program memory
• Configuration storage in embedded systems
• Data storage requiring high endurance and long retention

Memory IC Procurement Notes

Verify the specific package type associated with the C1QE suffix against official Microchip documentation, as datasheet references primarily list TSOP and TFBGA options. Confirm that the industrial temperature range (-40°C to +85°C) aligns with system requirements. Ensure compatibility with the 2.7V to 3.6V operating voltage range for both read and write operations.

Memory IC Selection Notes

Select this component for designs needing a 16-bit wide parallel interface with 4 Mbit capacity. It is suitable for applications demanding fast word-program times and robust data protection. Consider the available packages such as 48-lead TSOP or 48-ball TFBGA based on board space constraints. Verify that the host system can support the required command sequences for sector and block erasure.

Memory IC Part Context

This part belongs to the SST39VF series of Multi-Purpose Flash memories from Microchip Technology. It utilizes proprietary SuperFlash technology, which offers superior reliability compared to alternative flash technologies. The series is designed for convenient and economical updating of program, configuration, or data memory in various electronic systems.

Memory IC Replacement Considerations

SST39LF400A-70-4I-C1QE requires a 3.0V to 3.6V supply voltage instead of 2.7V to 3.6V.