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Microchip Technology SST25WF010-40-5I-SAF
- Part No.:
- SST25WF010-40-5I-SAF
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
SST25WF010-40-5I-SAF.pdf
- Description:
- IC FLASH 1MBIT SPI 40MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,246
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Product details
Overview
SST25WF010-40-5I-SAF from Microchip Technology is a 1 Mbit (128 KByte) SPI serial flash memory IC operating at 1.65–1.95 V, supporting 40 MHz high-speed read via SPI Mode 0/3 interface, with uniform 4 KByte sector erase and 100,000 program/erase cycles - used for firmware storage in space-constrained industrial microcontroller boot systems.
For engineers reviewing the SST25WF010-40-5I-SAF datasheet, SST25WF010-40-5I-SAF pinout, SST25WF010-40-5I-SAF application, or SST25WF010-40-5I-SAF equivalent, key selection considerations include 1.8V single-supply operation, hardware reset vs. hold pin configuration, AAI programming support, SO-as-RY/BY# capability during write operations, and industrial temperature range compliance (-40°C to +85°C).
Technical Context
The SST25WF010-40-5I-SAF implements a four-wire SPI-compatible interface (SCK, SI, SO, CE#) with dual-mode clocking (Mode 0 and Mode 3), enabling interoperability with standard SPI controllers. It uses SST's proprietary SuperFlash technology with split-gate cell architecture and thick-oxide tunneling injector for enhanced reliability.
It supports Auto Address Increment (AAI) word-programming to reduce sequential write overhead, and provides end-of-write detection via both software polling of the BUSY bit and hardware-ready status on the SO pin when configured as RY/BY#. The RST#/HOLD# pin defaults to hardware reset but can be reconfigured via instruction to suspend serial communication without deselecting the device.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 1 Mbit (128 KByte) organized as uniform 4 KByte sectors |
| Supply Voltage | 1.65–1.95 V - enables direct integration with 1.8V logic domains without level shifting |
| Max Clock Frequency | 40 MHz - supports high-throughput firmware reads in time-critical boot sequences |
| Endurance | 100,000 program/erase cycles - suitable for field-upgradable embedded applications |
| Data Retention | Greater than 100 years - ensures long-term firmware integrity in unpowered storage |
| Erase Granularity | Uniform 4 KByte sectors only - no 32/64 KByte blocks (not supported in 1 Mbit variant) |
| Active Read Current | 2 mA typical @ 20 MHz - low power draw during active firmware execution |
| Standby Current | 2 µA typical - minimal quiescent consumption in system sleep modes |
Pinout & Package
Package: 8-lead SOIC (150 mils), RoHS-compliant, industrial temperature grade (-40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CE# | Chip Enable | Active-low chip select; must remain low throughout command sequence to prevent premature termination |
| SO | Serial Data Output / RY/BY# | Primary data output; configurable as ready/busy status pin during AAI programming for hardware flow control |
| WP# | Write Protect | Enables lock-down of Block-Protection bits (BP2–BP0, BPL) in status register when driven low |
| VSS | Ground | Reference return path for all I/O and core circuitry |
| VDD | Power Supply | 1.65–1.95 V supply input; powers internal logic, memory array, and I/O buffers |
| RST#/HOLD# | Reset or Hold Control | Defaults to hardware reset (RST#); programmable to HOLD# to pause SPI transactions mid-sequence without deselection |
| SCK | Serial Clock | Timing reference for SPI transfers; sampled on rising edge for inputs, drives outputs on falling edge |
| SI | Serial Data Input | Command, address, and data input path; latched on rising edge of SCK |
Key Features
| Feature | Design Value |
|---|---|
| SuperFlash Technology | Split-gate cell with thick-oxide tunneling injector delivers higher endurance and lower program energy vs. conventional flash |
| AAI Word Programming | Reduces total programming time for sequential writes by eliminating repeated address transmission per word |
| Dual SPI Modes (0 & 3) | Ensures compatibility with diverse host controllers regardless of idle SCK polarity requirement |
| Flexible Write Protection | Software-configurable block protection (BP2–BP0) plus hardware-enabled lock-down (BPL) prevents accidental firmware overwrite |
| Hardware Reset / Hold Pin | Single-pin dual-function design saves PCB real estate while supporting both system initialization and SPI transaction suspension |
Applications
| Industrial PLC Firmware Storage | Medical Device Boot Code Retention |
|---|---|
Use Scenario: Storing bootloader and application firmware in programmable logic controllers deployed in factory automation environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: Non-volatile code storage device interfaced via SPI to ARM Cortex-M7 MCU; provides deterministic read latency under 20 MHz and reliable erase/write at -40°C to +85°C. Use Value: 100-year data retention and 100,000-cycle endurance ensure firmware integrity over full product lifecycle without field replacement. | Use Scenario: Holding certified boot images and calibration data in portable diagnostic equipment requiring regulatory-compliant long-term data stability. IC Role / Device Role / Timing Role: SPI-connected flash memory serving as secure, tamper-resistant storage for FDA-cleared boot code; operates within strict 1.65–1.95 V supply window of medical-grade PMIC. Use Value: Hardware WP# and software BP bits enable immutable boot partitioning, preventing unauthorized firmware modification during service updates. |
| Smart Energy Meter Boot Memory | Automotive Body Control Module (BCM) Configuration |
Use Scenario: Storing metering firmware and tariff tables in ANSI C12.22-compliant smart meters exposed to outdoor thermal cycling and EMI-rich substations. IC Role / Device Role / Timing Role: Low-power SPI flash providing 2 µA standby current and 40 MHz high-speed read for rapid firmware validation during cold start. Use Value: SO-as-RY/BY# capability allows hardware handshaking during AAI programming, reducing MCU polling overhead and improving update reliability. | Use Scenario: Storing vehicle-specific configuration parameters (e.g., door lock behavior, lighting profiles) in BCMs where EEPROM wear-out is a concern. IC Role / Device Role / Timing Role: SPI serial flash replacing legacy EEPROM; leverages AAI programming to write multi-byte config sets atomically without intermediate erase. Use Value: Uniform 4 KByte sector erase enables safe in-field parameter updates with guaranteed atomicity and no partial-write corruption risk. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar SPI serial flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT25DF021-SSH-T | 2 Mbit density, 3.3 V supply (2.7–3.6 V), no AAI programming, 85 MHz max clock | Requires level-shifting for 1.8 V systems; lacks hardware RY/BY# on SO pin | Select only if higher density and 3.3 V compatibility outweigh loss of AAI and 1.8 V native operation |
| W25Q80DVSSIG | 8 Mbit density, 3.3 V supply, Quad SPI support, 105 MHz clock, 100K endurance | Not pin-compatible; requires QSPI controller and different command set; higher voltage incompatible with 1.8 V domain | Choose only for designs migrating to quad-I/O interfaces and needing >1 Mbit capacity with no voltage constraint |
Compared with AT25DF021-SSH-T and W25Q80DVSSIG, the SST25WF010-40-5I-SAF uniquely delivers 1.8 V native operation, AAI programming, and SO-as-RY/BY# functionality in an industry-standard 8-lead SOIC - making it optimal for space- and power-constrained 1.8 V embedded systems requiring deterministic firmware update behavior.
Availability
SST25WF010-40-5I-SAF is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device boot code retention, and smart energy meter boot memory requiring stable component supply across extended product lifecycles.
Supply support for SST25WF010-40-5I-SAF 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 broad industrial and automotive qualification coverage.
The SST25WF010-40-5I-SAF belongs to the Serial Flash 25 Series, designed specifically for low-voltage, high-reliability embedded firmware and configuration storage in resource-constrained 1.8 V systems.
FAQ
What is the maximum clock frequency supported by the SST25WF010-40-5I-SAF during high-speed read operations?
The SST25WF010-40-5I-SAF supports up to 40 MHz during High-Speed Read operations using the 0BH command with a dummy byte. This is confirmed in the official Microchip datasheet DS20005016C, Table 9. Standard Read (03H) is limited to 20 MHz. The 40 MHz capability enables faster boot code loading in time-sensitive applications, and the device maintains timing compliance across its full industrial temperature range (-40°C to +85°C).
Does the SST25WF010-40-5I-SAF support 32 KByte or 64 KByte block erase commands?
No, the SST25WF010-40-5I-SAF does not support 32 KByte or 64 KByte block erase. As specified in the datasheet DS20005016C, Section "Memory Organization" and Table 9, only uniform 4 KByte sector erase (20H) and chip erase (60H/C7H) are available for the 1 Mbit variant. Larger block erases (52H, D8H) apply exclusively to SST25WF020 and SST25WF040 devices per Tables 9 and 10.
How is the RST#/HOLD# pin configured on the SST25WF010-40-5I-SAF at power-on?
At power-on, the RST#/HOLD# pin on the SST25WF010-40-5I-SAF defaults to hardware reset (RST#) functionality. It can be reconfigured to HOLD# mode via the Enable-Hold (AAH) instruction, but this change persists only until the next power cycle. After power-off and power-on, the pin automatically reverts to RST# mode, as documented in DS20005016C, Section "Reset/Hold Mode".
What write protection mechanisms are implemented in the SST25WF010-40-5I-SAF?
The SST25WF010-40-5I-SAF implements dual-layer write protection: hardware-based via the WP# pin (enabling BPL bit lock-down) and software-based via Block-Protection bits BP2–BP0 in the status register. When WP# is low, the BPL bit controls whether BP bits are read-only. Default power-up state sets BP2–BP0 = 11b, protecting the full 1 Mbit memory space (000000H–01FFFFH), per Table 6 in DS20005016C.
Is the SST25WF010-40-5I-SAF still in active production or marked obsolete?
The SST25WF010-40-5I-SAF is an obsolete device per Microchip's official documentation (DS20005016C, title page: "EOL Data Sheet"). However, Aetrix Electronics maintains strategic inventory and supply chain continuity support for this part, including lifecycle coordination and traceable sourcing, to serve existing industrial and medical designs dependent on this specific 1.8 V, 1 Mbit SPI flash variant.
SST25WF010-40-5I-SAF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- SST25
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 1Mbit
- Memory Organization:
- 128K x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 40 MHz
- Write Cycle Time - Word, Page:
- 60µs
- Access Time:
- -
- Voltage - Supply:
- 1.65V ~ 1.95V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
SST25WF010-40-5I-SAF FAQ
1.How can I place an order for SST25WF010-40-5I-SAF through Aetrix?
Please submit a Request for Quotation (RFQ) for SST25WF010-40-5I-SAF 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 SST25WF010-40-5I-SAF reliable?
The price and inventory of SST25WF010-40-5I-SAF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SST25WF010-40-5I-SAF is usually 5 days.
3.What payment methods are accepted for SST25WF010-40-5I-SAF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SST25WF010-40-5I-SAF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SST25WF010-40-5I-SAF?
SST25WF010-40-5I-SAF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SST25WF010-40-5I-SAF 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 SST25WF010-40-5I-SAF?
For technical support, including SST25WF010-40-5I-SAF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SST25WF010-40-5I-SAF requirements.
6.How does Aetrix verify that SST25WF010-40-5I-SAF is sourced from the original manufacturer or authorized distributors?
All SST25WF010-40-5I-SAF 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 SST25WF010-40-5I-SAF meets industry standards.
7.What is the process for return or replacement of SST25WF010-40-5I-SAF?
All SST25WF010-40-5I-SAF units undergo pre-shipment inspection (PSI). If there is an issue with SST25WF010-40-5I-SAF, 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 SST25WF010-40-5I-SAF part is unused and in its original packaging.
Return procedure for SST25WF010-40-5I-SAF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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