Microchip Technology SST25VF080B-80-4C-SAE-T

Overview

SST25VF080B-80-4C-SAE-T from Microchip Technology is an 8 Mbit SPI serial flash memory IC with 80 MHz high-speed read capability, 2.7–3.6 V single-supply operation, and SuperFlash® technology enabling 100,000 program/erase cycles and >100-year data retention. It serves as nonvolatile code/data storage in microcontroller boot loaders, firmware update buffers, and embedded configuration memory.

For engineers reviewing the SST25VF080B-80-4C-SAE-T datasheet, SST25VF080B-80-4C-SAE-T pinout, SST25VF080B-80-4C-SAE-T application, or SST25VF080B-80-4C-SAE-T equivalent, key selection criteria include SPI Mode 0/3 compatibility, 4 KByte sector + 32/64 KByte block erase granularity, hardware/software end-of-write detection, HOLD#/WP# control pins, and industrial temperature range (–40°C to +85°C) support.

Technical Context

The SST25VF080B-80-4C-SAE-T implements a four-wire SPI interface (SCK, SI, SO, CE#) with dual-mode clock polarity support (Mode 0 and Mode 3), enabling interoperability with diverse host controllers. Its SuperFlash® split-gate CMOS architecture delivers faster erase times (18 ms sector/block, 35 ms chip) and lower active current (10 mA typical) versus conventional NOR flash.

It supports Auto Address Increment (AAI) word-programming for efficient sequential writes, hardware RY/BY# status output via SO during AAI (enabled by EBSY command), and flexible software/hardware write protection using BP3–BP0 bits and WP#-controlled BPL lock-down. Memory organization comprises 2048 uniform 4 KByte sectors, grouped into 64 KByte blocks and 32 KByte overlay blocks.

Key Specifications

Pinout & Package

Package: 8-contact WSON (6 mm × 5 mm), RoHS-compliant, moisture-sensitive level 3.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar SPI serial flash memory applications.

Compared with SST25VF080B-80-4C-SAE-T, W25Q80DVSSIG offers higher bandwidth but removes HOLD# and hardware status signaling, while MX25L8006EM1I-12G adds configurability via SFDP at the cost of losing AAI efficiency and increasing active power.

Availability

SST25VF080B-80-4C-SAE-T is available at Aetrix Electronics and suitable for industrial HMIs, automotive body control modules, and IoT edge node firmware storage requiring stable component supply, long-lifecycle assurance, and RoHS-compliant packaging.

Supply support for SST25VF080B-80-4C-SAE-T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Microchip Technology is a global provider of microcontrollers, analog components, and memory solutions, acquired Silicon Storage Technology (SST) in 2010 to strengthen its serial flash portfolio.

The SST25VF080B-80-4C-SAE-T belongs to Microchip's legacy SST25 serial flash product line, engineered specifically for cost-sensitive, space-constrained embedded systems needing reliable, low-power nonvolatile storage with industrial-grade temperature tolerance.

FAQ

What is the maximum operating frequency of the SST25VF080B-80-4C-SAE-T?

The SST25VF080B-80-4C-SAE-T supports up to 80 MHz for High-Speed Read operations using the 0BH command with a dummy byte. This is confirmed in Table 14 of the DS25045A datasheet and distinguishes it from the -50 variant (66 MHz) and -40 variant (50 MHz). The 80 MHz rating applies only to read cycles; write/erase timing remains governed by internal self-timed algorithms.

Does the SST25VF080B-80-4C-SAE-T support both SPI Mode 0 and Mode 3?

Yes, the SST25VF080B-80-4C-SAE-T explicitly supports both SPI Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1), as stated in the "Device Operation" section of the DS25045A datasheet. This dual-mode compatibility ensures interoperability with a wide range of microcontrollers and FPGAs without requiring hardware-level clock polarity inversion.

What package type does the SST25VF080B-80-4C-SAE-T use?

The SST25VF080B-80-4C-SAE-T uses an 8-contact WSON package measuring 6 mm × 5 mm, as indicated by the "SAE" suffix in the part number and confirmed in Figure 2 and Table 1 of the DS25045A datasheet. This compact, leadless package provides thermal and electrical performance advantages over SOIC variants while maintaining surface-mount compatibility.

How does the HOLD# pin function on the SST25VF080B-80-4C-SAE-T?

The HOLD# pin on the SST25VF080B-80-4C-SAE-T suspends an ongoing SPI transaction without deselecting the device or resetting internal state. As detailed in the "Hold Operation" section, HOLD# must be asserted low while CE# is active low and synchronized to the SCK idle state; SO enters high-impedance, allowing the host to service interrupts before resuming communication.

What is the purpose of the WP# pin on the SST25VF080B-80-4C-SAE-T?

The WP# pin on the SST25VF080B-80-4C-SAE-T controls the Block-Protection-Lock (BPL) bit in the status register. When WP# is driven low, the BPL bit becomes active and locks BP3–BP0 write protection bits; when WP# is high, those bits remain freely programmable. This enables hardware-enforced write lockdown for critical firmware or calibration sectors.