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Microchip Technology SST25VF032B-80-4I-S2AF
- Part No.:
- SST25VF032B-80-4I-S2AF
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
SST25VF032B-80-4I-S2AF.pdf
- Description:
- IC FLASH 32MBIT SPI 80MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SST25VF032B-80-4I-S2AF from Microchip is a 32 Mbit SPI serial flash memory IC with single-supply 2.7–3.6 V operation, 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), used for firmware storage and code execution in embedded microcontroller systems.
For engineers reviewing the SST25VF032B-80-4I-S2AF datasheet, SST25VF032B-80-4I-S2AF pinout, SST25VF032B-80-4I-S2AF application, or SST25VF032B-80-4I-S2AF equivalent, key selection considerations include SPI Mode 0/3 compatibility, AAI word-programming support, hardware-ready/busy status via SO pin, and software/hardware write protection granularity across 32 Mbit address space.
Technical Context
The SST25VF032B-80-4I-S2AF 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 and data retention.
It supports three erase granularities-4 KByte sectors, 32 KByte blocks, and 64 KByte blocks-and features Auto Address Increment (AAI) word programming to reduce sequential write latency. End-of-write detection is available via software polling of BUSY bit or hardware RY/BY# output on SO during AAI mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 32 Mbit (4 MByte), organized as uniform 4 KByte sectors with overlay 32 KByte and 64 KByte erasable blocks |
| Max Read Speed | 80 MHz using High-Speed Read (0BH) instruction with dummy cycle; enables fast boot and real-time code fetch |
| Erase/Program Performance | Chip-erase: 35 ms typical; sector/block-erase: 18 ms typical; byte-program: 7 µs typical; reduces firmware update time |
| Endurance & Retention | 100,000 program/erase cycles; >100 years data retention at 85°C - suitable for long-life industrial deployments |
| Supply Voltage | 2.7–3.6 V single supply - compatible with 3.3 V logic domains without level shifting |
| Operating Temperature | –40°C to +85°C industrial grade - validated for use in automotive body control, industrial HMIs, and network edge devices |
| Write Protection | Hardware WP# pin + software BP0–BP3 bits + BPL lock-down - enables hierarchical, field-updatable memory partitioning |
Pinout & Package
Package: 8-lead SOIC (200 mils), RoHS-compliant, surface-mountable with standard reflow profile.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CE# | Chip Enable | Active-low device select; must remain low throughout command sequence; deassertion terminates ongoing operation |
| SO | Serial Data Output / RY/BY# (in AAI mode) | Outputs read data on falling SCK edge; configurable as hardware ready/busy indicator during AAI programming |
| WP# | Write Protect | Enables/disables lock-down of Block-Protection bits (BP0–BP3); low = BPL bit controls write access to status register |
| HOLD# | Hold | Suspends SPI communication without deselecting device; allows host to service higher-priority interrupts mid-sequence |
| SCK | Serial Clock | Provides timing reference; rising edge latches input (SI), falling edge outputs data (SO); supports Mode 0 and Mode 3 |
| SI | Serial Data Input | Accepts opcodes, addresses, and data; MSB-first, sampled on rising SCK edge |
| VDD | Power Supply | 2.7–3.6 V supply; powers core logic and memory array; decoupling capacitor required per layout guidelines |
| VSS | Ground | Reference return path; must be low-impedance connection to minimize noise coupling into SPI signaling |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash Technology | Split-gate cell + thick-oxide tunneling injector delivers lower program current and shorter erase time vs. conventional flash |
| Auto Address Increment (AAI) | Reduces total programming time for sequential writes by eliminating repeated address transmission overhead |
| Dual SPI Mode Support | Native compatibility with both Mode 0 (CPOL=0, CPHA=0) and Mode 3 (CPOL=1, CPHA=1) hosts - no protocol translation needed |
| Flexible Block Protection | Software-configurable BP0–BP3 bits protect 1/64 to full 32 Mbit array; BPL bit prevents accidental modification of protection settings |
| Hardware RY/BY# Output | SO pin doubles as ready/busy status during AAI programming - eliminates need for status register polling and saves CPU cycles |
Applications
| Firmware Storage in MCU-Based Systems | Boot Code Execution in Industrial Controllers |
|---|---|
|
Use Scenario: Storing bootloader, application firmware, and configuration parameters in resource-constrained microcontroller units with external flash expansion. IC Role / Device Role / Timing Role: Non-volatile code/data storage device interfaced via SPI; provides deterministic 80 MHz read access for XIP (execute-in-place) or fast load-to-RAM boot sequences. Use Value: Enables secure, field-upgradable firmware with 100,000-cycle endurance and >100-year data retention - critical for unattended industrial gateways. |
Use Scenario: Hosting boot images and runtime assets for programmable logic controllers (PLCs), motor drives, and HMI panels operating in harsh environments. IC Role / Device Role / Timing Role: Primary boot memory mapped to processor's external memory bus; leverages high-speed read and sector-erase for rapid firmware patching during maintenance windows. Use Value: Uniform 4 KByte sector erase allows atomic updates of individual functional modules without disrupting entire system image - improves update reliability. |
| Configuration Storage in Network Edge Devices | Firmware Recovery in Automotive Body Modules |
|
Use Scenario: Persisting network stack parameters, security keys, and calibration data in Wi-Fi/BLE gateways and cellular IoT endpoints. IC Role / Device Role / Timing Role: Secure parameter store with hardware WP# and software BP bits; supports encrypted read/write via host-side crypto acceleration. Use Value: Block-protection hierarchy prevents unauthorized overwrite of critical configuration zones while permitting dynamic updates to user-defined sections. |
Use Scenario: Storing redundant firmware images and recovery routines in automotive body control modules (BCM) requiring ASIL-B capable fail-safe behavior. IC Role / Device Role / Timing Role: Dual-image storage medium supporting AAI programming for fast recovery image loading after power loss or corruption event. Use Value: Chip-erase time of 35 ms (typical) enables sub-100 ms recovery initiation - meets automotive diagnostic response time requirements. |
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 AAI mode, different status register layout | Lacks AAI programming and hardware RY/BY# on SO; requires host-side address increment management | Preferred when quad I/O bandwidth or faster read speed is prioritized over AAI efficiency and legacy SPI simplicity |
| Macronix MX25L3233FZNI-10G | 32 Mbit, 104 MHz max read, standard SPI only, no HOLD# pin, different sector protection scheme | Missing HOLD# pin limits interrupt handling flexibility; BP bits cover different memory regions than SST25VF032B | Selected where board space constraints favor smaller WSON-8 package and HOLD# functionality is not required |
Compared with W25Q32JVSSIQ and MX25L3233FZNI-10G, the SST25VF032B-80-4I-S2AF uniquely combines AAI word programming, configurable RY/BY# on SO, and HOLD# suspend capability - delivering lower host CPU overhead and higher determinism in real-time embedded firmware update paths.
Availability
SST25VF032B-80-4I-S2AF is available at Aetrix Electronics and suitable for firmware storage, boot code execution, and configuration persistence requiring stable component supply in industrial automation, automotive electronics, and network infrastructure designs.
Supply support for SST25VF032B-80-4I-S2AF 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 Inc. is a leading provider of microcontrollers, analog components, and memory solutions, with emphasis on reliability, longevity, and embedded system integration.
The SST25VF032B-80-4I-S2AF belongs to Microchip's SST25 serial flash product line, designed specifically for cost-sensitive, low-pin-count embedded applications demanding robust non-volatile storage with SPI simplicity and industrial-grade endurance.
FAQ
What is the maximum clock frequency supported by SST25VF032B-80-4I-S2AF for read operations?
The SST25VF032B-80-4I-S2AF supports up to 80 MHz for High-Speed Read (0BH instruction) with a dummy cycle, and 25 MHz for standard Read (03H instruction). This 80 MHz capability enables fast code execution and reduces boot latency in microcontroller-based systems. The device maintains timing compliance across its full industrial temperature range (–40°C to +85°C) and 2.7–3.6 V supply voltage window.
Does SST25VF032B-80-4I-S2AF support both SPI Mode 0 and Mode 3?
Yes, the SST25VF032B-80-4I-S2AF 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 wide range of microcontrollers and FPGAs without requiring protocol translation or additional glue logic.
How does the Auto Address Increment (AAI) feature work in SST25VF032B-80-4I-S2AF?
The SST25VF032B-80-4I-S2AF implements AAI word programming using the ADH (1010 1101b) instruction to program two bytes per command without retransmitting the address. After the initial address and first two data bytes, subsequent AAI commands auto-increment the address by two. This reduces host SPI transaction overhead and accelerates bulk programming - especially beneficial for firmware updates in resource-limited embedded systems.
What write protection mechanisms are available on SST25VF032B-80-4I-S2AF?
The SST25VF032B-80-4I-S2AF provides layered write protection: hardware-level via the WP# pin (enabling BPL lock-down), and software-level via BP0–BP3 bits in the status register. These bits define protected memory regions from 1/64 to full 32 Mbit array. Once BPL = 1, BP bits become read-only - preventing accidental or malicious modification of protection settings during field operation.
Is SST25VF032B-80-4I-S2AF still in active production?
No - the SST25VF032B-80-4I-S2AF is an obsolete (EOL) device per Microchip's official documentation (DS20005071B, April 2015). While Aetrix Electronics maintains limited legacy inventory and offers lifecycle support, design-ins should consider qualified alternatives such as Winbond W25Q32JVSSIQ or Macronix MX25L3233FZNI-10G, with careful validation of timing, command set, and protection behavior against SST25VF032B-80-4I-S2AF.
SST25VF032B-80-4I-S2AF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST25
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tube
- 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 FAQ
1.How can I place an order for SST25VF032B-80-4I-S2AF through Aetrix?
Please submit a Request for Quotation (RFQ) for SST25VF032B-80-4I-S2AF 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 reliable?
The price and inventory of SST25VF032B-80-4I-S2AF 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 is usually 5 days.
3.What payment methods are accepted for SST25VF032B-80-4I-S2AF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST25VF032B-80-4I-S2AF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST25VF032B-80-4I-S2AF?
SST25VF032B-80-4I-S2AF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST25VF032B-80-4I-S2AF 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?
For technical support, including SST25VF032B-80-4I-S2AF 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 requirements.
6.How does Aetrix verify that SST25VF032B-80-4I-S2AF is sourced from the original manufacturer or authorized distributors?
All SST25VF032B-80-4I-S2AF 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 meets industry standards.
7.What is the process for return or replacement of SST25VF032B-80-4I-S2AF?
All SST25VF032B-80-4I-S2AF units undergo pre-shipment inspection (PSI). If there is an issue with SST25VF032B-80-4I-S2AF, 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 part is unused and in its original packaging.
Return procedure for SST25VF032B-80-4I-S2AF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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