SST25VF512A-33-4I-QAE

Memory IC Overview

The SST25VF512A-33-4I-QAE is a 512 Kbit SPI Serial Flash memory manufactured by Microchip Technology using SuperFlash technology. It operates on a single 2.7V to 3.6V supply and supports a maximum clock frequency of 33 MHz via SPI Mode 0 and Mode 3. The device features a 64K x 8 organization with uniform 4 KByte sectors and 32 KByte overlay blocks. It includes software write protection, an Auto Address Increment (AAI) programming mode, and a Hold pin for serial sequence suspension. Industrial temperature range coverage extends from -40°C to +85°C.

Memory IC Feature Summary

• SuperFlash technology providing superior reliability and low power consumption
• Flexible erase capability with uniform sector and block structures
• Software write protection with lock-down functionality via status register bits
• Hold pin support to suspend serial communication without resetting the device

Memory IC Applications

• Embedded systems requiring non-volatile code storage
• Industrial control applications needing wide temperature operation
• Consumer electronics utilizing compact WSON packaging

Memory IC Procurement Notes

Verify component authenticity through authorized Microchip distributors or direct factory channels. Confirm the specific ordering suffix matches the required package and temperature grade. Request original datasheets and compliance documentation upon receipt. Inspect packages for physical damage before integration into designs.

Memory IC Selection Notes

Select this part for designs requiring high-speed SPI access up to 33 MHz within a small footprint. Ensure the system voltage remains within the 2.7V to 3.6V operational window. Consider the industrial temperature rating for environments exceeding commercial limits. Verify that the 8-contact WSON package fits the available board space constraints.

Memory IC Part Context

This component belongs to the SST25VF series of SPI Serial Flash memories. It utilizes split-gate cell design and thick-oxide tunneling injectors for enhanced manufacturability. The device is part of Microchip's portfolio following the acquisition of Silicon Storage Technology, maintaining compatibility with standard SPI protocols.

Memory IC Replacement Considerations

SST25VF512A-33-4I-QAF

Memory IC FAQ

How does the Hold pin function during serial operations?

The HOLD# pin pauses serial communication without resetting the device. It activates when SCK is low and HOLD# goes low, suspending data output until HOLD# returns high while SCK is low.

What is the purpose of the AAI programming mode?

Auto Address Increment (AAI) allows multiple bytes to be programmed sequentially without re-entering addresses, reducing total programming time for full array writes.