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Microchip Technology SST25VF512-20-4C-SAE — Discrete Semiconductors

Microchip SST25VF512-20-4C-SAE SPI Flash, 512Kbit, 20 MHz

MPNSST25VF512-20-4C-SAE
End of Life

Microchip Technology SST25 series, SPI Flash memory, 512Kbit, 20 MHz clock, 8-SOIC package, Tube, 2.7V-3.6V supply, 0°C to 70°C.

$0.61Ref. price · indicative, final on quote
Microchip Technology SST25VF512-20-4C-SAE datasheet (PDF)
Packaging8-SOIC (0.154", 3.90mm Width)
RoHSROHS3 Compliant
SeriesSST25
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

SST25VF512-20-4C-SAE specifications
ParameterValue
SeriesSST25
Memory typeNon-Volatile
MountingSurface Mount
Supply voltage2.7V ~ 3.6V
Clock frequency20 MHz
Memory interfaceSPI
Operating temperature0°C ~ 70°C (TA)
PackageTube
TechnologyFLASH
Memory size512Kbit
Memory formatFLASH
Case8-SOIC (0.154\", 3.90mm Width)
Memory organization64K x 8
Write cycle time - word, page20µs

Product details

Memory organization and write performance

The SST25VF512-20-4C-SAE: Organized as 64K x 8 bits, the device uses a standard SPI interface for read and write operations. The page write cycle time is 20 µs, which means a full 64 KB page can be programmed in roughly 1.3 seconds at the bus limit — fast enough for firmware updates or configuration storage in embedded systems.

8-SOIC package and board integration

The supplier device package is 8-SOIC, so the PCB layout matches the common 150-mil body width used across many SPI Flash and EEPROM parts.

Frequently asked questions

What is the closest functional second-source to SST25VF512-20-4C-SAE?

The 23K640-I/SN is a 64 Kbit SRAM with an SPI interface in the same 8-SOIC package, but it is volatile memory — it loses data on power loss. The SST25VF512-20-4C-SAE is non-volatile Flash, so they are not drop-in replacements. For a non-volatile alternative, look at other SPI Flash parts in the same package with similar supply voltage.