SST25VF032B-50-4C-S2AF – Serial NOR Flash (SPI) – Microchip

The SST25VF032B-50-4C-S2AF is a 32 Mbit (4 MByte) SPI Serial NOR Flash memory from SST (Microchip Technology) in an 8-lead SOIC (200 mil) package. This is an obsolete, hard-to-find device available for RFQ from Pacific Component Xchange.

The SST25VF032B-50-4C-S2AF is a 32 Mbit (4 MByte) SPI Serial NOR Flash memory manufactured by SST (Silicon Storage Technology), now part of Microchip Technology. Built on SST’s proprietary, high-performance CMOS SuperFlash technology, the SST25VF032B uses a split-gate cell design with a thick-oxide tunneling injector to deliver strong reliability and manufacturability in a low pin-count, four-wire SPI-compatible package that conserves board space. This -50-4C-S2AF variant is supplied in an 8-lead SOIC (200 mil) package. The “-50” speed code corresponds to an earlier datasheet revision of this family; current Microchip documentation lists the SST25VF032B at 66 MHz and 80 MHz operating-frequency grades, with the family rated for serial clock operation up to 80 MHz.

Because the SST25VF032B is now an obsolete / end-of-life (EOL) device, it is increasingly difficult to source through authorized channels. Pacific Component Xchange specializes in locating these legacy memory parts for engineering, repair, and production needs.

Key Features

• 32 Mbit (4 MByte) density SPI Serial NOR Flash
• SST SuperFlash technology (split-gate cell, thick-oxide tunneling injector)
• Single voltage read and write operation: 2.7V to 3.6V
• SPI-compatible serial interface (Mode 0 and Mode 3)
• High-speed clock frequency: up to 80 MHz (family); this part carries the legacy “-50” speed code
• Flexible erase: uniform 4 KByte sectors, 32 KByte overlay blocks, and 64 KByte overlay blocks
• Fast erase and byte-program: chip-erase 35 ms (typ.), sector-/block-erase 18 ms (typ.), byte-program 7 us (typ.)
• Auto Address Increment (AAI) word programming
• Hold (HOLD#) pin and Write Protect (WP#) pin; software block-protection bits
• End-of-Write detection via BUSY status bit / SO pin
• Endurance: 100,000 cycles; data retention greater than 100 years
• Low power: 10 mA active read current (typ.), 5 uA standby current (typ.)
• JEDEC Read-ID: BFh (manufacturer) / 25h (type) / 4Ah (device)
• 8-lead SOIC (200 mil) package; RoHS compliant

Applications

• Embedded firmware and boot code storage
• Networking and telecom equipment (routers, switches, set-top boxes)
• Industrial control and automation
• Consumer electronics and appliances
• Legacy system repair, maintenance, and end-of-life production runs

Why Source SST25VF032B-50-4C-S2AF from Pacific Component Xchange

The SST25VF032B-50-4C-S2AF is an obsolete, hard-to-find memory device with little to no authorized-distributor availability. Pacific Component Xchange is an independent distributor focused on locating discontinued, end-of-life, and allocation-constrained memory components. We help engineers and procurement teams keep legacy designs in production and complete repairs when standard supply channels have dried up.

Every order is backed by our commitment to authenticity and quality, with inspection and testing options available to protect against counterfeit risk. We ship worldwide and respond quickly to quote requests. Request a quote (RFQ) today for current pricing, available quantity, and lead time on the SST25VF032B-50-4C-S2AF.