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Microchip Technology SST25WF080B-40E/SN
- Part No.:
- SST25WF080B-40E/SN
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SST25WF080B-40E/SN.pdf
- Description:
- IC FLASH 8MBIT SPI 80MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,138
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Product details
Overview
SST25WF080B-40E/SN from Microchip Technology is an 8 Mbit, 1.8V SPI serial flash memory IC with SuperFlash technology, supporting dual I/O and fast-read modes up to 40 MHz. It operates from 1.65–1.95 V, delivers 4 mA typical active read current, and features uniform 4 KByte sectors and 64 KByte blocks for flexible firmware storage in space-constrained embedded systems.
For engineers reviewing the SST25WF080B-40E/SN datasheet, SST25WF080B-40E/SN pinout, SST25WF080B-40E/SN application, or SST25WF080B-40E/SN equivalent, key selection criteria include its AEC-Q100 qualification, industrial/extended temperature range (–40°C to +125°C), dual-output/fast-read instruction support (3BH/BBH), and ultra-low deep power-down current (2 µA).
Technical Context
This SPI flash uses Microchip's proprietary SuperFlash split-gate cell architecture with thick-oxide tunneling injector, enabling superior endurance (100,000 cycles) and >20-year data retention versus conventional NOR flash. Its four-wire interface supports both SPI Mode 0 and Mode 3, with CE#, SCK, SI/SIO0, SO/SIO1, WP#, and HOLD# pins enabling robust command sequencing and suspend/resume capability.
The device implements software-controlled block protection via BP0–BP2, TB, and BPL bits in a non-volatile status register, allowing selective write-protection of top or bottom memory regions. End-of-write detection is handled via BUSY-bit polling, eliminating need for fixed timing delays during erase/program operations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 8 Mbit (1 MByte), organized as 256 × 4 KByte sectors and 16 × 64 KByte overlay blocks |
| Supply Voltage | 1.65–1.95 V - enables direct integration with 1.8 V logic domains without level shifting |
| Max Clock Frequency | 40 MHz - supports high-throughput firmware reads using High-Speed Read (0BH) or Fast-Read Dual I/O (BBH) |
| Page Size | 256 bytes - defines minimum programmable unit; partial-page writes wrap within boundary |
| Endurance | 100,000 program/erase cycles - suitable for field-upgradable firmware with frequent updates |
| Data Retention | >20 years at +85°C - validated reliability for automotive and industrial deployments |
| Power Consumption | 2 µA deep power-down current - enables battery-backed operation in always-on edge nodes |
Pinout & Package
Available in 8-lead SOIC (150 mil) and 8-contact USON (2 mm × 3 mm) packages. Both variants share identical pin functions and electrical characteristics.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CE# | Chip Enable | Active-low device select; must remain low throughout command sequence; drives device into standby when high |
| SCK | Serial Clock | Timing reference for SPI interface; samples SI on rising edge, outputs SO on falling edge (Mode 0/3 compatible) |
| SI / SIO0 | Serial Input / Dual I/O Lane 0 | Primary input for commands/addresses/data; in Dual I/O mode, carries even-address bits and even-data bits |
| SO / SIO1 | Serial Output / Dual I/O Lane 1 | Primary output for read data; in Dual I/O mode, carries odd-address bits and odd-data bits |
| WP# | Write Protect | Enables lock-down of Block-Protection bits (BPL); low = BPL controls WRSR execution per Table 4-1 |
| HOLD# | Hold Control | Suspends ongoing SPI transaction without deselecting device; requires CE# low and synchronized SCK edge |
| VDD | Power Supply | 1.65–1.95 V supply input; powers internal logic, charge pumps, and I/O buffers |
| VSS | Ground | Reference return path for all internal circuits and I/O signals |
Key Features
| Feature | Design Value |
|---|---|
| Dual I/O Fast-Read Support | Enables 40 MHz reads using BBH instruction with 2-bit-per-clock address input and dual-lane data output - cuts random-access latency by ~50% vs standard SPI read |
| Flexible Erase Granularity | Independent 4 KByte sector and 64 KByte block erase - allows precise firmware partitioning (e.g., bootloader + application + config) without full-chip erasure |
| Hardware-Assisted Write Protection | WP# pin + BPL bit combination prevents accidental status register modification - critical for preventing corruption of protected boot code regions |
| Ultra-Low Deep Power-Down | 2 µA typical current draw in DPD mode (B9H) - extends battery life in intermittently active IoT sensors and telematics modules |
| AEC-Q100 Qualified | Validated for automotive applications per Grade 2 (–40°C to +105°C) and extended Grade 3 (–40°C to +125°C) requirements - supports infotainment, ADAS, and body control units |
Applications
| Automotive Infotainment Boot Storage | Industrial PLC Firmware Image |
|---|---|
Use Scenario: Stores boot loader and OS kernel for head-unit microprocessor requiring secure, fast startup after ignition cycle. IC Role / Device Role / Timing Role: Non-volatile boot memory with AEC-Q100 qualification and <20-year data retention; provides deterministic 40 MHz read access via High-Speed Read (0BH) instruction. Use Value: Enables sub-500 ms cold-boot time while meeting automotive reliability standards - eliminates need for external voltage supervisors or redundant storage. |
Use Scenario: Holds field-upgradable firmware and configuration parameters in programmable logic controllers deployed in factory automation environments. IC Role / Device Role / Timing Role: SPI-configurable flash memory supporting over-the-air updates; leverages sector-erase (40 ms) and page-program (0.8 ms/256B) for atomic patch deployment. Use Value: Reduces update downtime by enabling in-place firmware revision without full reflash - verified endurance supports >100 annual updates over 10+ year product lifecycle. |
| Medical Device Parameter Storage | Smart Meter Firmware Vault |
Use Scenario: Retains calibration coefficients, usage logs, and safety-critical settings in portable diagnostic equipment operating across wide ambient temperatures. IC Role / Device Role / Timing Role: Temperature-stable serial flash with –40°C to +125°C extended grade rating; uses HOLD# to pause transactions during ESD events without corrupting active writes. Use Value: Guarantees data integrity under thermal stress and transient interference - meets IEC 60601-1 leakage and retention requirements for Class II devices. |
Use Scenario: Secures metering firmware and tariff tables in ANSI C12.22-compliant smart electricity meters with tamper-resistant design requirements. IC Role / Device Role / Timing Role: Hardware- and software-protected flash memory; BP bits + WP# pin prevent unauthorized modification of billing logic or cryptographic keys stored in top-block protected region. Use Value: Achieves FIPS 140-2 Level 2 alignment for firmware authenticity - eliminates need for external secure elements in cost-sensitive meter designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Winbond W25Q80DVSSIG | Same density (8 Mbit), 1.65–1.95 V, 104 MHz max clock (quad I/O), but lacks AEC-Q100 qualification and has higher deep power-down current (1 µA vs 2 µA) | Targeted at consumer electronics; not validated for automotive temperature cycling or vibration profiles | Select only if quad-I/O bandwidth >40 MHz is required and AEC-Q100 compliance is unnecessary |
| Cypress S25FL008K0XMFI011 | 8 Mbit, 1.7–2.0 V, 80 MHz max clock (quad I/O), AEC-Q100 qualified, but uses different status register layout and lacks HOLD# pin | Requires firmware adaptation for suspend/resume; no hardware hold capability increases risk of bus collision during interrupt handling | Prefer when migrating from legacy Cypress platforms; avoid if HOLD# functionality is architecturally required |
Compared with W25Q80DVSSIG and S25FL008K0XMFI011, SST25WF080B-40E/SN uniquely combines AEC-Q100 qualification, dedicated HOLD# pin for transaction suspension, and 2 µA deep power-down - making it optimal for automotive and battery-powered industrial firmware storage where reliability and low quiescent power are non-negotiable.
Availability
SST25WF080B-40E/SN is available at Aetrix Electronics and suitable for automotive infotainment, industrial PLC firmware, and medical diagnostics requiring stable component supply, long-term lifecycle support, and AEC-Q100 compliance.
Supply support for SST25WF080B-40E/SN 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 embedded control and reliability-critical applications.
The SST25WF080B-40E/SN belongs to Microchip's Serial Flash 25 Series, designed specifically for automotive, industrial, and medical systems needing high-reliability, low-voltage, SPI-compatible non-volatile storage with extended temperature operation.
FAQ
What is the maximum clock frequency supported by SST25WF080B-40E/SN?
The SST25WF080B-40E/SN supports up to 40 MHz for High-Speed Read (0BH), Fast-Read Dual-Output (3BH), and Fast-Read Dual I/O (BBH) instructions. Standard Read (03H) is limited to 30 MHz. This 40 MHz capability enables faster firmware loading and real-time parameter access in time-sensitive applications like automotive boot sequences.
Does SST25WF080B-40E/SN support dual I/O mode, and how is it enabled?
Yes, SST25WF080B-40E/SN supports dual I/O mode via the Fast-Read Dual I/O instruction (BBH). It requires no configuration register setting - activation occurs automatically upon issuing the BBH opcode followed by address and dummy cycles. SI/SIO0 and SO/SIO1 then operate bidirectionally for simultaneous address input and data output, doubling effective throughput versus single I/O mode.
What is the purpose of the HOLD# pin on SST25WF080B-40E/SN?
The HOLD# pin on SST25WF080B-40E/SN suspends an ongoing SPI transaction without deselecting the device or resetting internal state. When asserted low (with CE# active), it places SO in high-impedance and pauses clock synchronization - allowing host processors to service higher-priority interrupts while preserving flash command context. Resuming requires deasserting HOLD# while maintaining CE# low.
How does write protection work on SST25WF080B-40E/SN?
SST25WF080B-40E/SN implements layered write protection: hardware-level via WP# pin controlling BPL bit lock-down, and software-level via BP0–BP2 and TB bits in the status register. When WP# is low and BPL=1, the block protection bits become read-only. Protection granularity ranges from 1/16 to full memory array, configurable for top or bottom blocks - critical for safeguarding bootloader sections.
Is SST25WF080B-40E/SN qualified for automotive applications?
Yes, SST25WF080B-40E/SN is AEC-Q100 qualified and rated for extended temperature operation from –40°C to +125°C. It meets automotive reliability requirements including endurance (100,000 cycles), data retention (>20 years at +85°C), and robustness against thermal cycling and voltage transients - making it suitable for infotainment, ADAS, and body control module firmware storage.
SST25WF080B-40E/SN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST25
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 8Mbit
- Memory Organization:
- 1M x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 80 MHz
- Write Cycle Time - Word, Page:
- 1ms
- Access Time:
- -
- Voltage - Supply:
- 1.65V ~ 1.95V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
SST25WF080B-40E/SN FAQ
1.How can I place an order for SST25WF080B-40E/SN through Aetrix?
Please submit a Request for Quotation (RFQ) for SST25WF080B-40E/SN 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 SST25WF080B-40E/SN reliable?
The price and inventory of SST25WF080B-40E/SN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST25WF080B-40E/SN is usually 5 days.
3.What payment methods are accepted for SST25WF080B-40E/SN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST25WF080B-40E/SN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST25WF080B-40E/SN?
SST25WF080B-40E/SN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST25WF080B-40E/SN 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 SST25WF080B-40E/SN?
For technical support, including SST25WF080B-40E/SN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST25WF080B-40E/SN requirements.
6.How does Aetrix verify that SST25WF080B-40E/SN is sourced from the original manufacturer or authorized distributors?
All SST25WF080B-40E/SN 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 SST25WF080B-40E/SN meets industry standards.
7.What is the process for return or replacement of SST25WF080B-40E/SN?
All SST25WF080B-40E/SN units undergo pre-shipment inspection (PSI). If there is an issue with SST25WF080B-40E/SN, 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 SST25WF080B-40E/SN part is unused and in its original packaging.
Return procedure for SST25WF080B-40E/SN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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