Microchip Technology SST25VF080B-80-4I-QAE-T

Overview

SST25VF080B-80-4I-QAE-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 industrial temperature range (–40°C to +85°C). It uses SuperFlash technology for enhanced reliability, supports uniform 4 KByte sectors and 64 KByte blocks, and is commonly used in firmware storage for embedded microcontrollers and boot code retention in industrial control systems.

For engineers reviewing the SST25VF080B-80-4I-QAE-T datasheet, SST25VF080B-80-4I-QAE-T pinout, SST25VF080B-80-4I-QAE-T application, or SST25VF080B-80-4I-QAE-T equivalent, key selection considerations include its 80 MHz high-speed read mode, AAI word-programming support, hardware busy status via SO pin during AAI, industrial-grade temperature rating, and WSON-8 (6 mm × 5 mm) package compatibility with space-constrained PCB layouts.

Technical Context

The SST25VF080B-80-4I-QAE-T implements a four-wire SPI interface compliant with Mode 0 and Mode 3, enabling low-pin-count integration into host MCU systems. Its internal SuperFlash architecture features split-gate cells and thick-oxide tunneling injectors, delivering superior endurance (100,000 program/erase cycles) and data retention (>100 years).

It supports three erase granularities-4 KByte sectors, 32 KByte blocks, and 64 KByte blocks-and includes Auto Address Increment (AAI) programming for efficient multi-word writes. End-of-write detection is available via software polling of the BUSY bit or hardware RY/BY# output on the SO pin when enabled using EBSY (70H) command.

Key Specifications

Pinout & Package

Package: 8-contact WSON (6 mm × 5 mm), leadless, exposed pad - optimized for thermal performance and compact layout in space-constrained industrial modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with W25Q80DVSSIG and MT25QL80BA8ESF-0SIT, the SST25VF080B-80-4I-QAE-T uniquely balances 80 MHz read speed, AAI programming, HOLD# suspend, and WSON-8 packaging - making it optimal for cost-sensitive, space-constrained industrial MCU designs requiring robust field update capability without architectural changes.

Availability

SST25VF080B-80-4I-QAE-T is available at Aetrix Electronics and suitable for industrial control systems, medical diagnostics equipment, and automotive telematics modules requiring stable component supply, long-lifecycle assurance, and RoHS-compliant sourcing.

Supply support for SST25VF080B-80-4I-QAE-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 semiconductor company specializing in microcontrollers, analog devices, and memory solutions, with emphasis on reliability and long-term product availability for industrial and automotive markets.

The SST25VF080B-80-4I-QAE-T belongs to Microchip's legacy SST25 serial flash product line, designed specifically for cost-effective, high-reliability firmware and configuration storage in resource-constrained embedded systems.

FAQ

What is the maximum clock frequency supported by SST25VF080B-80-4I-QAE-T in High-Speed Read mode?

The SST25VF080B-80-4I-QAE-T supports up to 80 MHz in High-Speed Read mode (command 0BH with dummy byte), as confirmed in Table 14 of DS25045A. This is specific to the "-80" speed grade; the "-50" variant supports only 66 MHz. The 80 MHz operation requires proper PCB layout with controlled impedance and termination to maintain signal integrity.

Does SST25VF080B-80-4I-QAE-T support both SPI Mode 0 and Mode 3?

Yes, the SST25VF080B-80-4I-QAE-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 DS25045A. This dual-mode compatibility ensures interoperability with a wide range of microcontroller SPI peripherals without requiring hardware or firmware adaptation.

What package type is used for SST25VF080B-80-4I-QAE-T?

The SST25VF080B-80-4I-QAE-T uses an 8-contact WSON package measuring 6 mm × 5 mm with an exposed pad, as indicated by the "QAE" suffix per Microchip's ordering code convention and confirmed in Figure 2 and Table 1 of DS25045A. This package provides superior thermal performance and board-space efficiency compared to SOIC variants.

How does the HOLD# pin function during active SPI communication?

The HOLD# pin on the SST25VF080B-80-4I-QAE-T suspends an ongoing SPI sequence without resetting internal state or requiring CE# deassertion. As detailed in Figure 4 and the "Hold Operation" section, HOLD# activation occurs when its falling edge coincides with SCK's active-low state, placing SO in high-impedance while preserving address and command context for seamless resumption.

Can SST25VF080B-80-4I-QAE-T be used in applications requiring data retention beyond 10 years?

Yes - the SST25VF080B-80-4I-QAE-T guarantees greater than 100 years of data retention at +25°C (and proportionally longer at lower temperatures), as specified in the "Superior Reliability" section of DS25045A. This exceeds typical industrial requirements and supports long-life deployments such as smart metering infrastructure and railway signaling systems.