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Serial Flash

SST26 – Serial SPI/SQI™ NOR Flash Devices

The SST26 series is the latest family of serial Flash devices with SuperFlash® technology. These devices utilize a 4-bit multiplexed I/O serial interface to boost performance while maintaining the compact form factor of standard serial Flash devices.


  • x1/x2/x4 Serial Peripheral Interface (SPI) and SQI Flash device protocols
  • 104 MHz clock frequency
  • Industry's fastest erase times
  • One-Time Programmable (OTP) secure ID with 64-bit unique factory programmed ID
  • Low-power consumption with Deep Power Down mode
  • Write suspend
  • Serial Flash Discoverable Parameters (SFDP)
  • 100 years data retention
  • 100,000 erase/write cycle endurance

SST25 – Serial SPI NOR Flash

The SST25 series products utilize SuperFlash technology and operate with a standard serial SPI interface at speeds of up to 80 MHz.


  • Serial Peripheral Interface (SPI) protocol
  • Up to 80 MHz clock frequency
  • Fast program and erase times
  • Low power consumption
  • 100 years data retention
  • 100,000 erase/write cycle endurance

Voltage Ranges

Flash memory has a narrower operating voltage range than other memory technologies such as EEPROM. Therefore, Flash products are typically designed specifically for 1.8V, 3.0V, or 5.0V applications. The voltage range is designated in the part number by two letters following the series name:

Series VoltageOperating RangeExamples
WF (1.8V)1.65V to 1.95VSST25WFxx, SST26WFxx
VF (3V)2.7V to 3.6VSST25VFxx, SST26VFxx
PF (3V extended)2.3V to 3.6VSST25PFxx, SST26PFxx
LF (3.3V)3.0V to 3.6VSST25LFxx


Technical Briefs

TitleDate PublishedSize
SST25VF064C to SST26VF064B/064BA Migration11/05/14111 KB

Flash Development Tools

TitlePart NumberDescription
Serial SuperFlash® Kit 2AC243008The Serial SuperFlash® Kit 2 allows evaluation of Microchip's Serial Flash Devices which are made using the SST SuperFlash® technology.Buy Now
SQI SuperFlash® Kit 1AC243009The SQI SuperFlash Kit 1 contains three Serial Flash Daughter Boards.Buy Now
Parallel SuperFlash Technology Kit 1AC243006-1This evaluation kit contains two Parallel Flash PICtail™ Plus Daughter Boards which are designed to interface with the PICtail Plus connector on the Explorer 16 Development Board.Buy Now