SST39VF400A-70-4C-B3KE

Memory IC Overview

The SST39VF400A-70-4C-B3KE is a 4 Mbit (256K x 16) CMOS Multi-Purpose Flash memory manufactured using SuperFlash technology. It features a parallel asynchronous interface with a typical access time of 70 ns. The device operates on a single voltage supply ranging from 2.7 V to 3.6 V for both read and write operations. It supports sector, block, and chip erase capabilities with uniform sizes. The component is housed in a 48-ball TFBGA package.

Memory IC Feature Summary

• SuperFlash Technology: Utilizes split-gate cell design and thick oxide tunneling injector for enhanced reliability and manufacturability compared to alternative approaches.
• Sector/Block Erase Capability: Supports uniform 2 KWord sectors and 32 KWord blocks for flexible data management.
• Automatic Write Timing: Features internal Vpp generation and end-of-write detection via Toggle Bit or Data# Polling.
• Software Data Protection: Includes JEDEC approved software protection schemes to prevent inadvertent writes during program and erase operations.

Memory IC Applications

• Applications requiring convenient and economical updating of program, configuration, or data memory.
• System applications needing improved performance and reliability while lowering power consumption.
• Program, data, and configuration storage applications where flexibility and cost reduction are priorities.

Memory IC Procurement Notes

Verify the specific suffix 'B3KE' corresponds to the 48-ball TFBGA package and commercial temperature range (0°C to +70°C). Confirm that the '4C' designation aligns with the required operating conditions. Ensure compatibility with the 2.7V to 3.6V single-voltage supply requirement for both read and write cycles.

Memory IC Selection Notes

Select this component when a 4 Mbit capacity with a 16-bit data bus width is required. It is suitable for designs needing a 70 ns access time and a parallel interface. Consider the TFBGA package for surface mount requirements. Verify that the 2.7V minimum operating voltage meets the system's power supply specifications.

Memory IC Part Context

This part belongs to the SST39VF series of Multi-Purpose Flash memories. It shares architectural similarities with the SST39LF series but differs in its lower operating voltage range (2.7V vs 3.0V minimum). Both series utilize the same SuperFlash technology and command sets, ensuring functional compatibility within their respective voltage constraints.

Memory IC Replacement Considerations

SST39VF400A-70-4I-B3KE

Memory IC FAQ

How does the SST39VF400A detect the completion of a Program or Erase operation?

The device provides two software means to detect the completion of a write cycle: Data# Polling (DQ7) and Toggle Bit (DQ6).

What is the organization of the memory array in the SST39VF400A?

The memory is organized as 256K words by 16 bits, providing a total capacity of 4 Mbits.