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Microchip Technology AT25F4096W-10SU-2.7
- Part No.:
- AT25F4096W-10SU-2.7
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT25F4096W-10SU-2.7.pdf
- Description:
- IC FLASH 4MBIT SPI 33MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,431
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Product details
Overview
AT25F4096W-10SU-2.7 from Atmel (now Microchip) is a 4 Mbit serial Flash memory IC optimized for low-voltage embedded systems. It delivers SPI-compatible nonvolatile storage with 2.7–3.6 V operation, 33 MHz clock rate, and sector-based architecture comprising eight 64 KB sectors. It supports byte/page programming and hardware/software write protection via WP pin and status register - used in industrial control firmware storage and boot code retention.
For engineers reviewing the AT25F4096W-10SU-2.7 datasheet, AT25F4096W-10SU-2.7 pinout, AT25F4096W-10SU-2.7 application, or AT25F4096W-10SU-2.7 equivalent, key selection criteria include verified 8-lead EIAJ SOIC package compatibility, self-timed 30 µs/byte program cycle, 1 s/sector erase timing, sector-level block protection (1/8 to full array), and SPI Mode 0/3 interoperability with microcontroller peripherals.
Technical Context
The AT25F4096W-10SU-2.7 implements a synchronous SPI slave interface with dedicated SI/SO lines, CS-controlled selection, and HOLD suspension capability. Its instruction set includes WREN/WRDI for write enable/disable, RDSR/WRSR for status register access, and SECTOR ERASE/CHIP ERASE for nonvolatile memory management.
It uses an 8-bit instruction register with MSB-first data transfer and supports programmable block protection via BP0–BP2 bits in the status register. Hardware write protection is conditional on WPEN bit state and WP pin voltage, enabling selective lockdown of top 1/8, 1/4, 1/2, or entire 4 Mbit array without requiring external logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4,194,304 bits (524,288 × 8), sufficient for firmware images up to ~512 KB |
| Supply Voltage Range | 2.7 V to 3.6 V - enables direct integration with 3.3 V microcontrollers without level shifting |
| SPI Clock Frequency | 33 MHz maximum - supports high-speed read/write in bandwidth-constrained embedded hosts |
| Program Cycle Time | 30 µs per byte typical - enables rapid field updates of configuration or calibration data |
| Erase Cycle Time | 1 second per 64 KB sector typical - balances speed and endurance for infrequent reprogramming |
| Endurance | 10,000 write cycles typical - suitable for applications requiring moderate reconfiguration over product lifetime |
| Data Retention | 20 years at +85°C - ensures long-term reliability in industrial temperature environments |
Pinout & Package
AT25F4096W-10SU-2.7 is packaged in an 8-lead EIAJ SOIC (package code 8S2), 0.209" body width, gull-wing lead form, RoHS-compliant with NiPdAu finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; device ignores SI/SO when high; initiates instruction decoding on falling edge |
| SCK | Serial Clock Input | Synchronizes all data transfers; supports SPI Modes 0 and 3; max 33 MHz frequency |
| SI | Serial Data Input | Receives op-codes, addresses, and program data; MSB-first, sampled on SCK rising edge (Mode 0) |
| SO | Serial Data Output | Drives read data and status bits; high-impedance when CS high or during internal write cycles |
| GND | Ground Reference | Primary return path for VCC and I/O signals; must be low-impedance for noise immunity |
| VCC | Power Supply | 2.7–3.6 V supply; powers core logic and I/O buffers; decoupling capacitor required near pin |
| WP | Write Protect Input | Hardware lockout for status register writes when WPEN = 1 and WP = low; prevents accidental configuration changes |
| HOLD | Communication Suspend | Pauses ongoing SPI transaction without resetting sequence; requires SCK low before assertion |
Key Features
| Feature | Design Value |
|---|---|
| Sector Architecture | Eight independent 64 KB sectors enable granular firmware partitioning and selective update without full chip erase |
| Block Write Protection | Configurable via status register to lock top 1/8 (Sector 8), 1/4 (Sectors 7–8), 1/2 (Sectors 5–8), or full array - prevents corruption during power loss |
| Self-Timed Operations | No external timing control needed: 30 µs/byte program and 1 s/sector erase execute autonomously after command initiation |
| Hardware + Software Protection | WP pin and WRSR instruction jointly enforce write security - WP blocks status register writes when enabled; software sets sector lock bits |
| Industrial Temperature Range | –40°C to +85°C operation confirmed - validated for use in motor drives, PLCs, and outdoor telemetry nodes |
Applications
| Industrial Firmware Storage | Embedded Boot Code Retention |
|---|---|
Use Scenario: Storing firmware images and parameter tables in programmable logic controllers (PLCs) operating in factory-floor environments with wide temperature swings and electrical noise. IC Role / Device Role / Timing Role: Nonvolatile storage for bootloader and application binaries; accessed via SPI during cold start and field upgrade sequences. Use Value: 20-year data retention and 10,000 write cycles ensure reliable operation across multi-year maintenance intervals without degradation. |
Use Scenario: Holding secure boot code and cryptographic keys in medical diagnostic devices where tamper resistance and long-term integrity are critical. IC Role / Device Role / Timing Role: Primary boot memory mapped to microcontroller's reset vector; protected by BP bits and WP pin to prevent unauthorized modification. Use Value: Sector-level write protection prevents overwrite of boot sector while allowing safe updates to application partitions - no risk of bricking the device. |
| IoT Edge Node Configuration | Automated Test Equipment (ATE) Calibration Data |
Use Scenario: Storing sensor calibration coefficients and network credentials in battery-powered wireless sensors deployed in remote locations. IC Role / Device Role / Timing Role: Low-power serial Flash accessed intermittently via SPI; standby current <10 µA minimizes quiescent drain. Use Value: 2.7 V minimum supply allows direct connection to Li-ion or coin-cell sources without regulators - extends battery life. |
Use Scenario: Archiving per-unit calibration constants and test history logs in benchtop ATE systems requiring traceable, nonvolatile records. IC Role / Device Role / Timing Role: High-reliability data logger with sector-erase granularity - each DUT's calibration data written to dedicated 64 KB sector. Use Value: 1 s/sector erase time enables fast reprogramming between test batches; 33 MHz SPI supports rapid log retrieval during diagnostics. |
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 W25Q40EWUXIE | 4 Mbit density, same 8-lead USON package, but operates at 1.65–1.95 V or 2.7–3.6 V; supports Quad SPI and DTR modes not available on AT25F4096W-10SU-2.7 | Enables higher throughput in new designs using QSPI controllers; not drop-in compatible due to command set differences and dual-die architecture | Select if migrating to newer platforms with QSPI support and need lower voltage headroom; verify timing and instruction mapping. |
| Micron MT25QL04AABIMF-0SIT | 4 Mbit, 8-lead SOIC, 2.7–3.6 V, supports standard SPI + Quad SPI; features 100,000 write cycles and 20-year retention - higher endurance than AT25F4096W-10SU-2.7 | Superior endurance suits applications requiring frequent field updates; command set differs slightly (e.g., different status register layout) | Choose for high-cycle-count use cases like dynamic configuration logging; validate WRSR bit mapping and protection behavior. |
Compared with AT25F4096W-10SU-2.7, W25Q40EWUXIE offers expanded voltage flexibility and faster interfaces but requires firmware adaptation, while MT25QL04AABIMF-0SIT provides 10× higher endurance and broader SPI feature support - both retain 4 Mbit capacity and SOIC footprint but differ in protection granularity and timing behavior.
Availability
AT25F4096W-10SU-2.7 is available at Aetrix Electronics and suitable for industrial control firmware storage, embedded boot code retention, and IoT edge node configuration requiring stable component supply across extended product lifecycles.
Supply support for AT25F4096W-10SU-2.7 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
Atmel Corporation, now part of Microchip Technology, designs high-reliability nonvolatile memory and microcontroller solutions for industrial, automotive, and consumer applications.
The AT25F4096W-10SU-2.7 belongs to Atmel's legacy serial Flash product line, engineered specifically for cost-sensitive, low-power embedded systems needing robust SPI-based firmware storage with hardware write protection.
FAQ
What is the operating voltage range for the AT25F4096W-10SU-2.7?
The AT25F4096W-10SU-2.7 operates from 2.7 V to 3.6 V DC. This low-voltage range allows direct interfacing with 3.3 V microcontrollers and reduces power consumption in battery-powered or energy-constrained systems. Operation outside this range may cause functional failure or damage, and absolute maximum rating is 4.2 V.
Does the AT25F4096W-10SU-2.7 support SPI Mode 3 in addition to Mode 0?
Yes, the AT25F4096W-10SU-2.7 explicitly supports both SPI Mode 0 (CPOL = 0, CPHA = 0) and Mode 3 (CPOL = 1, CPHA = 1). The datasheet details Mode 0 operation, but electrical specifications and timing diagrams confirm compatibility with Mode 3 clock polarity and phase configurations - essential for interoperability with diverse host controllers.
How does hardware write protection work on the AT25F4096W-10SU-2.7?
Hardware write protection on the AT25F4096W-10SU-2.7 is controlled by the WP pin and WPEN bit in the status register. When WPEN = 1 and WP is driven low, all writes to the status register - including block protection bits and WPEN itself - are inhibited. If WPEN = 0, the WP pin has no effect, allowing full status register configuration regardless of WP voltage.
What is the maximum clock frequency supported by the AT25F4096W-10SU-2.7?
The AT25F4096W-10SU-2.7 supports a maximum SCK clock frequency of 33 MHz under recommended operating conditions (VCC = 2.7–3.6 V, TA = –40°C to +85°C). This enables high-throughput read operations and efficient page programming, with timing parameters such as tWH and tWL specified down to 9 ns to ensure reliable sampling at full speed.
Can the AT25F4096W-10SU-2.7 be used in industrial temperature environments?
Yes, the AT25F4096W-10SU-2.7 is rated for industrial temperature operation from –40°C to +85°C. This specification is validated across all electrical parameters including supply current, timing, and write endurance. Its packaging (8-lead EIAJ SOIC) and internal design meet thermal cycling and long-term reliability requirements common in factory automation and outdoor infrastructure.
AT25F4096W-10SU-2.7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- 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:
- 4Mbit
- Memory Organization:
- 512K x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 33 MHz
- Write Cycle Time - Word, Page:
- 50µs
- Access Time:
- -
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT25F4096W-10SU-2.7 FAQ
1.How can I place an order for AT25F4096W-10SU-2.7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25F4096W-10SU-2.7 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 AT25F4096W-10SU-2.7 reliable?
The price and inventory of AT25F4096W-10SU-2.7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25F4096W-10SU-2.7 is usually 5 days.
3.What payment methods are accepted for AT25F4096W-10SU-2.7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25F4096W-10SU-2.7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25F4096W-10SU-2.7?
AT25F4096W-10SU-2.7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25F4096W-10SU-2.7 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 AT25F4096W-10SU-2.7?
For technical support, including AT25F4096W-10SU-2.7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25F4096W-10SU-2.7 requirements.
6.How does Aetrix verify that AT25F4096W-10SU-2.7 is sourced from the original manufacturer or authorized distributors?
All AT25F4096W-10SU-2.7 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 AT25F4096W-10SU-2.7 meets industry standards.
7.What is the process for return or replacement of AT25F4096W-10SU-2.7?
All AT25F4096W-10SU-2.7 units undergo pre-shipment inspection (PSI). If there is an issue with AT25F4096W-10SU-2.7, 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 AT25F4096W-10SU-2.7 part is unused and in its original packaging.
Return procedure for AT25F4096W-10SU-2.7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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