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Microchip Technology SST25VF020-20-4I-SAE — Memory (DRAM / SRAM / Flash / EEPROM)
Microchip Technology

SST25VF020-20-4I-SAE 2Mbit SPI Flash, 20 MHz, 8-SOIC

MPNSST25VF020-20-4I-SAE
End of Life

Microchip SST25 series, SST25VF020-20-4I-SAE, 2Mbit SPI Flash, 20 MHz clock, 2.7-3.6V supply, -40°C to 85°C, 8-SOIC.

$1.0Ref. price · indicative, final on quote
SST25VF020-20-4I-SAE datasheet
Packaging8-SOIC (0.154", 3.90mm Width)
StockContact for availability
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Specifications

SST25VF020-20-4I-SAE Technical Specifications
ParameterValue
SeriesSST25
Memory typeNon-Volatile
Mounting typeSurface Mount
Voltage2.7V ~ 3.6V
Frequency20 MHz
Memory interfaceSPI
Operating temperature-40°C ~ 85°C (TA)
PackageTube
TechnologyFLASH
Memory size2Mbit
Memory formatFLASH
Case8-SOIC (0.154\", 3.90mm Width)
Memory organization256K x 8
Write cycle time - word, page20µs

Product details

The Microchip SST25VF020-20-4I-SAE is a 2 Mbit serial flash memory organized as 256K x 8 bits, accessed through an SPI bus at up to 20 MHz.

Package and mounting

The 20 MHz clock rate sets the read throughput for code shadowing or data logging — at that speed, a 256-byte page reads in roughly 102 µs, which is fast enough for most microcontroller boot loads. The 20 µs page write time (word or page) means a full 256-byte page programs in the same 20 µs, not multiplied by the byte count, so firmware updates or parameter writes complete quickly. This write speed is typical for the SST25 family and keeps the part competitive for non-volatile storage where the host processor can pipeline the SPI transaction.

If your board sees under-hood heat or extended cold soak, this temperature grade is the one you want.

Frequently asked questions

Is there a direct drop-in replacement for SST25VF020-20-4I-SAE?

The closest functional sibling is the SST25VF010A-33-4I-QAE, which is a 1 Mbit device (half the density) in the same SST25 family with a 33 MHz clock, but it comes in a different package (8-WSON). For a density match, the SST25VF016B-50-4C-QAF-T offers 16 Mbit at 50 MHz but in a different package and commercial temperature range only. Neither is a drop-in — verify footprint and density before substituting.

Is SST25VF020-20-4I-SAE compatible with 3.3V systems?

Yes. The SPI bus levels are 3.3 V tolerant, so it interfaces without level shifters to most 3.3 V microcontrollers and SoCs.