SST26VF040AT-104I/SN Microchip Integrated Circuit (Small Outline Packages) In Stock
The SST26VF040AT-104I/SN is a 4 Mbit NOR Flash memory from Microchip supporting SPI, SDI, and SQI interfaces at up to 104 MHz on a 2.3 V to 3.6 V supply in an 8-pin SOIC package. It provides 100,000 write-erase cycle endurance and 100-year data retention for embedded code storage.
- Manufacturer
- Microchip
- Package
- Small Outline Packages
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- SST26VF040AT-104I/SN Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 4 Mbit NOR Flash with SPI, SDI, and Quad I/O (SQI) interface support at up to 104 MHz for fast firmware boot
- 2.3 V to 3.6 V supply range with 100,000 write/erase cycle endurance and 100-year minimum data retention
- Compact 8-pin SOIC package with RoHS-compliant Pb-free construction, compatible with standard 25 MHz SPI Flash footprints
Applications
The SST26VF040AT-104I/SN is used as code storage and firmware update memory in microcontroller-based IoT devices, wearables, and industrial sensor nodes that require fast 104 MHz SQI boot times. Its Quad I/O mode quadruples effective read bandwidth compared to standard SPI, making it suitable for execute-in-place (XIP) scenarios in resource-constrained embedded systems. The 8-pin SOIC footprint and low 2.3 V minimum supply make it an easy drop-in for battery-powered products upgrading from older 3.3 V SPI Flash devices.
Specifications
| Manufacturer Package Code | SOIC-8 |
| Factory Lead Time | 6Weeks |
| YTEOL | 18 |
| Clock Frequency-Max (fCLK) | 104MHz |
| Data Retention Time-Min | 100 |
| Endurance | 100000 Write/Erase Cycles |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Memory Density | 4194304bit |
| Memory IC Type | FLASH |
| Memory Width | 1 |
| Number of Functions | 1 |
| Number of Ports | 1 |
| Number of Words | 4194304words |
| Number of Words Code | 4000000 |
| Operating Mode | SYNCHRONOUS |
| Organization | 4MX1 |
| Output Characteristics | 3-STATE |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.23 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Parallel/Serial | SERIAL |
| Peak Reflow Temperature (Cel) | 260 |
| Programming Voltage | 3V |
| Serial Bus Type | SPI |
| Standby Current-Max | 0.00002A |
| Supply Current-Max | 0.025mA |
| Supply Voltage-Max (Vsup) | 3.6V |
| Supply Voltage-Min (Vsup) | 2.7V |
| Supply Voltage-Nom (Vsup) | 3V |
| Surface Mount | YES |
| Technology | CMOS |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Type | NOR TYPE |
| Write Protection | HARDWARE/SOFTWARE |
| ## SST26VF040AT-104I/SN Alternates Showing results | Image |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | 3A991.B.1.A |
| HTS Code | 8542.32.00.51 |
| Country of Origin | Thailand |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for SST26VF040AT-104I/SN:
Microchip Technology Inc Flash, 4MX1, PDSO8
suggested
Frequently Asked Questions
What interface modes does the SST26VF040AT-104I/SN support, and what peak read throughput does Quad I/O (SQI) provide at 104 MHz?
The SST26VF040AT-104I/SN supports standard SPI (1-bit), SDI (2-bit dual I/O), and SQI (4-bit Quad I/O) modes. In SQI mode at 104 MHz the device transfers 4 bits per clock, yielding a peak read throughput of approximately 52 MB/s, which significantly shortens firmware load times compared to standard SPI at 13 MB/s.
How does the 100,000 write/erase cycle endurance of the SST26VF040AT-104I/SN hold up for OTA firmware update scenarios?
100,000 erase cycles at the sector level means a device updating firmware once per day would take over 270 years to exhaust sector endurance, far exceeding typical product lifetimes. For OTA applications that update a 4 KB sector on every boot or configuration change, endurance is not a practical concern even in high-frequency update scenarios.
What supply voltage does the SST26VF040AT-104I/SN require, and can it operate directly from a 3.3 V LDO in a typical microcontroller circuit?
The SST26VF040AT-104I/SN operates from 2.3 V to 3.6 V, placing a standard 3.3 V regulated supply well within its operating window. No dedicated Flash power supply is needed; the device shares the same 3.3 V rail used by most ARM Cortex-M and PIC microcontrollers, simplifying power supply design and PCB layout.
For a firmware storage design, when should an engineer choose the 4 Mbit SST26VF040AT over an 8 Mbit part?
The 4 Mbit (512 KB) capacity suits microcontrollers with under 256 KB internal Flash that need external code shadow storage, or IoT nodes with a compressed firmware image under 400 KB. Choosing the smaller 4 Mbit device reduces unit cost and lowers active current consumption compared to larger 8 Mbit alternatives, which is important in battery-powered designs with a 3.3 V supply budget measured in milliamperes.
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