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Home > Products > Integrated Circuits (ICs) > Memory > Memory

Microchip Technology SST25VF032B-80-4I-S2AF-T

Name: SST25VF032B-80-4I-S2AF-T
Brand: Microchip Technology
SKU: SST25VF032B-80-4I-S2AF-T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: SST25VF032B-80-4I-S2AF-T

Manufacturer:: Microchip Technology

Category:: Memory

Package:: 8-SOIC (0.209", 5.30mm Width)

Datasheet:: SST25VF032B-80-4I-S2AF-T.pdf

Description:: IC FLASH 32MBIT SPI 80MHZ 8SOIC

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Product details

Overview

SST25VF032B-80-4I-S2AF-T from Microchip Technology is a 32 Mbit (4 MB) SPI serial flash memory IC with single-supply operation (2.7–3.6 V), 80 MHz high-speed read capability, uniform 4 KByte sector/32 KByte/64 KByte block erase architecture, and industrial temperature range (–40°C to +85°C). It serves as nonvolatile program/data storage in microcontroller-based embedded systems requiring fast boot code loading and firmware updates.

For engineers reviewing the SST25VF032B-80-4I-S2AF-T datasheet, SST25VF032B-80-4I-S2AF-T pinout, SST25VF032B-80-4I-S2AF-T application, or SST25VF032B-80-4I-S2AF-T equivalent, key selection considerations include SPI Mode 0/3 compatibility, Auto Address Increment (AAI) programming support, hardware-ready/busy status via SO pin, and software/hardware write protection granularity across 4 KByte sectors.

Technical Context

The SST25VF032B-80-4I-S2AF-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 technology uses split-gate cells and thick-oxide tunneling for enhanced endurance (100,000 cycles) and data retention (>100 years).

It supports three erase granularities-4 KByte sectors, 32 KByte blocks, and 64 KByte blocks-and features dedicated HOLD# and WP# pins for real-time serial communication suspension and hardware-enabled block-protection lock-down. The device integrates a software-configurable status register with BUSY, WEL, BP0–BP3, AAI, and BPL bits for precise control over memory access and programming flow.

Key Specifications

Parameter	Value and Actual Design Meaning
Memory Density	32 Mbit (4,194,304 bytes); sufficient for full MCU boot images and field-upgradable firmware binaries.
Interface	SPI-compatible 4-wire bus (SCK/SI/SO/CE#); supports both Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1).
Max Clock Frequency	80 MHz during High-Speed Read (0BH command); enables ≤50 ns effective read access time for latency-sensitive boot sequences.
Erase Granularity	Uniform 4 KByte sectors, 32 KByte blocks, and 64 KByte blocks; allows fine-grained firmware partitioning without full-chip erasure.
Endurance & Retention	100,000 program/erase cycles; >100 years data retention at +85°C - suitable for long-lifecycle industrial deployments.
Supply Voltage	2.7–3.6 V single supply; compatible with 3.3 V logic domains and eliminates need for auxiliary voltage rails.
Operating Temp	–40°C to +85°C industrial grade; validated for use in automotive body control modules and industrial HMIs.

Pinout & Package

Package: 8-lead SOIC (200 mils), RoHS-compliant. Pin assignments conform to standard SPI serial flash layout with dedicated HOLD# and WP# control inputs.

Pin/Terminal	Circuit Role	Design Meaning
CE#	Chip Enable	Active-low device select; must remain low throughout command execution; deassertion terminates ongoing operations and returns device to standby.
SCK	Serial Clock	Provides timing reference; commands/addresses sampled on rising edge; SO data shifted out on falling edge.
SI	Serial Data Input	Accepts opcodes, addresses, and data; MSB-first; latched on SCK rising edge.
SO	Serial Data Output / RY/BY#	Outputs read data or hardware-ready/busy status (when configured via EBSY/DBSY commands during AAI mode).
WP#	Write Protect	Enables/disables lock-down of Block-Protection bits (BP3–BP0) in status register; low = BPL bit active.
HOLD#	Hold	Suspends SPI communication mid-sequence without deselecting device; preserves internal address pointer and state.
VDD	Power Supply	2.7–3.6 V supply input; powers core logic and memory array; decoupling capacitor required per layout guidelines.
VSS	Ground	Reference ground for all I/O and internal circuitry; requires low-impedance connection to system GND plane.

Key Features

Feature	Design Value
Auto Address Increment (AAI) Programming	Reduces total programming time by eliminating repeated address transmission for sequential word writes - critical for rapid firmware patching.
Hardware Ready/Busy via SO Pin	Enables real-time status monitoring during AAI programming without polling; reduces CPU overhead and improves deterministic timing.
Flexible Block Protection	Software-controlled BP0–BP3 bits allow selective write protection of memory regions (none to full chip), preventing accidental corruption of boot code or calibration data.
Low-Power Operation	10 mA typical active read current and 5 µA standby current enable energy-efficient operation in battery-backed or always-on embedded nodes.
High-Speed Read at 80 MHz	Supports fast instruction fetch from external memory, reducing boot time and enabling XIP (execute-in-place) configurations in resource-constrained MCUs.

Applications

Industrial PLC Firmware Storage	Automotive Instrument Cluster Boot Memory
Use Scenario: Storing and updating firmware for programmable logic controllers operating in harsh factory environments with wide temperature swings and electrical noise. IC Role / Device Role / Timing Role: Nonvolatile code storage with fast read access for deterministic boot and secure field updates via SPI. Use Value: 100,000-cycle endurance and >100-year data retention ensure reliable operation over 15+ year product lifecycles without memory degradation.	Use Scenario: Holding boot loader and display graphics assets in digital instrument clusters where rapid startup (<500 ms) and functional safety compliance are mandatory. IC Role / Device Role / Timing Role: SPI-connected external flash providing XIP-capable code storage synchronized to MCU clock domain. Use Value: 80 MHz High-Speed Read (0BH) and uniform 4 KByte sector erase enable sub-second boot and atomic firmware upgrades without system interruption.
Medical Device Configuration Storage	Smart Energy Meter Firmware Archive
Use Scenario: Retaining calibrated sensor parameters, user preferences, and regulatory audit logs in Class II medical equipment requiring traceable, tamper-resistant storage. IC Role / Device Role / Timing Role: Secure, write-protected nonvolatile memory with hardware (WP#) and software (BP bits) lock-down for critical configuration data. Use Value: Dual-layer write protection prevents unauthorized modification while maintaining field-serviceability through controlled unlock procedures.	Use Scenario: Archiving firmware revisions and utility-specific calibration tables in ANSI C12.22-compliant smart meters deployed in remote grid infrastructure. IC Role / Device Role / Timing Role: Long-life, low-power serial flash supporting over-the-air (OTA) updates and rollback-safe dual-bank firmware storage. Use Value: 32 KByte/64 KByte block erase granularity allows independent update of application and communication stacks without erasing metering algorithms.

Industrial PLC Firmware Storage

Automotive Instrument Cluster Boot Memory

Use Scenario: Storing and updating firmware for programmable logic controllers operating in harsh factory environments with wide temperature swings and electrical noise.

IC Role / Device Role / Timing Role: Nonvolatile code storage with fast read access for deterministic boot and secure field updates via SPI.

Use Value: 100,000-cycle endurance and >100-year data retention ensure reliable operation over 15+ year product lifecycles without memory degradation.

Use Scenario: Holding boot loader and display graphics assets in digital instrument clusters where rapid startup (<500 ms) and functional safety compliance are mandatory.

IC Role / Device Role / Timing Role: SPI-connected external flash providing XIP-capable code storage synchronized to MCU clock domain.

Use Value: 80 MHz High-Speed Read (0BH) and uniform 4 KByte sector erase enable sub-second boot and atomic firmware upgrades without system interruption.

Medical Device Configuration Storage

Smart Energy Meter Firmware Archive

Use Scenario: Retaining calibrated sensor parameters, user preferences, and regulatory audit logs in Class II medical equipment requiring traceable, tamper-resistant storage.

IC Role / Device Role / Timing Role: Secure, write-protected nonvolatile memory with hardware (WP#) and software (BP bits) lock-down for critical configuration data.

Use Value: Dual-layer write protection prevents unauthorized modification while maintaining field-serviceability through controlled unlock procedures.

Use Scenario: Archiving firmware revisions and utility-specific calibration tables in ANSI C12.22-compliant smart meters deployed in remote grid infrastructure.

IC Role / Device Role / Timing Role: Long-life, low-power serial flash supporting over-the-air (OTA) updates and rollback-safe dual-bank firmware storage.

Use Value: 32 KByte/64 KByte block erase granularity allows independent update of application and communication stacks without erasing metering algorithms.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
Winbond W25Q32JVSSIQ	32 Mbit, 104 MHz max read, Quad SPI support, no HOLD#/WP# pin-level control - relies on software status register only.	Lacks hardware HOLD# suspension; requires tighter timing margins for high-frequency reads; no dedicated RY/BY# output on SO.	Prefer when Quad SPI bandwidth is needed and host controller supports QPI; avoid if hardware hold/resume or SO-as-RY/BY# is required.
Macronix MX25L3233FZBI-10G	32 Mbit, 104 MHz max read, standard SPI only, 1.65–3.6 V supply, built-in security registers (UID, OTP).	Wider VDD range enables direct interfacing with 1.8 V hosts; includes one-time-programmable area for device identity binding.	Select when dual-voltage compatibility or cryptographic binding (e.g., secure boot key storage) is required; verify HOLD#/WP# timing alignment with existing design.

Compared with SST25VF032B-80-4I-S2AF-T, W25Q32JVSSIQ offers higher speed but sacrifices hardware suspend/resume and configurable RY/BY# signaling, while MX25L3233FZBI-10G adds security features and wider voltage tolerance at the cost of slightly higher standby current and different block protection mapping.

Availability

SST25VF032B-80-4I-S2AF-T is available at Aetrix Electronics and suitable for industrial automation controllers, automotive instrument clusters, medical diagnostic interfaces, and smart grid metering systems requiring stable component supply and long-term lifecycle assurance.

Supply support for SST25VF032B-80-4I-S2AF-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 manufacturer specializing in microcontrollers, analog devices, and memory solutions, with strong focus on industrial, automotive, and aerospace reliability standards.

The SST25VF032B-80-4I-S2AF-T belongs to Microchip's legacy SST25 serial flash product line, designed specifically for cost-sensitive, high-reliability embedded applications demanding robust SPI flash performance with minimal pin count and power consumption.

FAQ

What is the maximum supported SPI clock frequency for SST25VF032B-80-4I-S2AF-T during read operations?

The SST25VF032B-80-4I-S2AF-T supports up to 80 MHz during High-Speed Read (0BH command), which delivers significantly faster data throughput than standard Read (03H) at 25 MHz. This 80 MHz rating is guaranteed across the full industrial temperature range (–40°C to +85°C) and 2.7–3.6 V supply, making SST25VF032B-80-4I-S2AF-T suitable for time-critical boot and firmware streaming applications.

Does SST25VF032B-80-4I-S2AF-T support both SPI Mode 0 and Mode 3?

Yes, SST25VF032B-80-4I-S2AF-T explicitly supports both SPI Mode 0 (CPOL = 0, CPHA = 0) and Mode 3 (CPOL = 1, CPHA = 1), as confirmed in the official Microchip datasheet DS20005071B. This dual-mode compatibility ensures seamless integration with a broad range of microcontrollers and FPGAs without requiring hardware-level SPI mode adaptation for SST25VF032B-80-4I-S2AF-T.

How does the HOLD# pin function in SST25VF032B-80-4I-S2AF-T, and what is its timing requirement?

The HOLD# pin in SST25VF032B-80-4I-S2AF-T suspends ongoing SPI communication without deselecting the device or resetting internal state. Hold activation requires CE# to be low and HOLD# to fall coincident with SCK's active-low phase; exit occurs on HOLD# rise aligned with SCK low. During hold, SO enters high-impedance while SI/SCK remain valid - preserving address pointer integrity for SST25VF032B-80-4I-S2AF-T in multi-master or interrupt-driven systems.

Can SST25VF032B-80-4I-S2AF-T perform byte-level programming, and what is the typical programming time?

Yes, SST25VF032B-80-4I-S2AF-T supports Byte-Program (02H command) with a typical programming time of 7 µs per byte. Each target byte must be in erased state (0xFF) prior to programming, and the Write-Enable (WREN) instruction must precede every write operation. SST25VF032B-80-4I-S2AF-T also supports faster Auto Address Increment (AAI) Word-Program for sequential writes, reducing overall programming latency in firmware update scenarios.

What write protection mechanisms are implemented in SST25VF032B-80-4I-S2AF-T?

SST25VF032B-80-4I-S2AF-T implements three-tiered write protection: (1) hardware via WP# pin to lock Block-Protection bits (BP3–BP0), (2) software via BP bits in status register to define protected memory regions (none to full chip), and (3) software-only via Write-Disable (WRDI) and Write-Enable (WREN) instructions. These layers ensure robust safeguarding of boot code and calibration data in SST25VF032B-80-4I-S2AF-T deployments.

SST25VF032B-80-4I-S2AF-T Specifications

Product attributes: Attribute value

Manufacturer:: Microchip Technology

Series:: SST25

Package/Case:: 8-SOIC (0.209", 5.30mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Programmable:: Verified

Memory Type:: Non-Volatile

Memory Format:: FLASH

Technology:: FLASH

Memory Size:: 32Mbit

Memory Organization:: 4M x 8

Memory Interface:: SPI

Clock Frequency:: 80 MHz

Write Cycle Time - Word, Page:: 10µs

Access Time:: -

Voltage - Supply:: 2.7V ~ 3.6V

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SOIC

SST25VF032B-80-4I-S2AF-T FAQ

1.How can I place an order for SST25VF032B-80-4I-S2AF-T through Aetrix?

Please submit a Request for Quotation (RFQ) for SST25VF032B-80-4I-S2AF-T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for SST25VF032B-80-4I-S2AF-T reliable?

The price and inventory of SST25VF032B-80-4I-S2AF-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST25VF032B-80-4I-S2AF-T is usually 5 days.

3.What payment methods are accepted for SST25VF032B-80-4I-S2AF-T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST25VF032B-80-4I-S2AF-T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for SST25VF032B-80-4I-S2AF-T?

SST25VF032B-80-4I-S2AF-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your SST25VF032B-80-4I-S2AF-T order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for SST25VF032B-80-4I-S2AF-T?

For technical support, including SST25VF032B-80-4I-S2AF-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST25VF032B-80-4I-S2AF-T requirements.

6.How does Aetrix verify that SST25VF032B-80-4I-S2AF-T is sourced from the original manufacturer or authorized distributors?

All SST25VF032B-80-4I-S2AF-T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SST25VF032B-80-4I-S2AF-T meets industry standards.

7.What is the process for return or replacement of SST25VF032B-80-4I-S2AF-T?

All SST25VF032B-80-4I-S2AF-T units undergo pre-shipment inspection (PSI). If there is an issue with SST25VF032B-80-4I-S2AF-T, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The SST25VF032B-80-4I-S2AF-T part is unused and in its original packaging.

Return procedure for SST25VF032B-80-4I-S2AF-T:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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