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Renesas AT25FF041A-SSHN-T
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- Part No.:
- AT25FF041A-SSHN-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT25FF041A-SSHN-T.pdf
- Description:
- IC FLASH 4MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:22,277
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Product details
Overview
AT25FF041A-SSHN-T from Renesas Electronics is a 4-Mbit serial flash memory IC supporting SPI, dual-output (1-1-2), quad-output (1-1-4), and quad I/O XiP (1-4-4, 0-4-4) modes with 133 MHz max clock frequency, 1.65 V–3.6 V supply range, and uniform 4/32/64-kB block erase. It enables code storage and execution in space-constrained embedded microcontrollers.
For engineers reviewing the AT25FF041A-SSHN-T datasheet, AT25FF041A-SSHN-T pinout, AT25FF041A-SSHN-T application, or AT25FF041A-SSHN-T equivalent, key selection criteria include multi-I/O timing compliance, deep power-down current (7 nA), OTP security register support, JEDEC SFDP compatibility, and -40°C to +85°C industrial temperature grade.
Technical Context
The AT25FF041A-SSHN-T implements a flexible SPI-based serial flash architecture with hardware reset (JEDEC standard), volatile/non-volatile status registers, and configurable I/O drive strength. It supports nested program/erase suspend-resume operations and burst wrap addressing for optimized XiP performance.
Its memory protection includes individual block lock/unlock (36h/39h), global lock/unlock (7Eh/98h), and user-definable protected areas at memory start or end. The device integrates three 128-byte OTP security registers and one factory-programmed 128-byte unique ID.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512 KB) - sufficient for firmware images in MCU boot loaders and IoT edge devices. |
| Supply Voltage | 1.65 V – 3.6 V - compatible with single-supply 1.8 V and 3.3 V systems without level-shifting. |
| Max Clock Frequency | 133 MHz - enables high-throughput read access in quad I/O XiP mode for real-time code execution. |
| Erase Granularity | Uniform 4-kB / 32-kB / 64-kB blocks + full chip - supports fine-grained firmware updates and field upgrades. |
| Power-Down Current | 7 nA Ultra-Deep Power-Down - extends battery life in always-on sensor nodes and wearable electronics. |
| Endurance & Retention | 100k P/E cycles / 20-year data retention (-40°C to +85°C) - meets long-life requirements for industrial control firmware storage. |
| Security Features | 3×128-byte OTP registers + 1×128-byte UID - enables secure key provisioning and device authentication in trusted boot flows. |
Pinout & Package
AT25FF041A-SSHN-T uses an 8-lead, 150-mil narrow SOIC package (SSHN). Pin functions are defined per JEDEC-standard SPI interface with dedicated HOLD and RESET inputs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS# | Chip Select Input | Active-low enable for SPI command/address/data transfers; supports daisy-chaining in multi-device systems. |
| SO | Serial Output | Master-in/slave-out data line; supports standard/dual/quad output modes depending on command and configuration. |
| WP# | Write Protect Input | Hardware-enabled memory protection; low state locks status registers and memory blocks when WPS=1. |
| GND | Ground Reference | Common return path for all I/O and core logic; requires low-impedance PCB connection for noise immunity. |
| VCC | Power Supply | 1.65–3.6 V input; decoupling capacitor (0.1 µF) required near pin for stable read/write operation. |
| HOLD# | Pause Control Input | Halts ongoing SPI transfer without deselecting device; enables multi-master arbitration and low-latency interrupt handling. |
| SI | Serial Input | Master-out/slave-in data line; accepts commands, addresses, and program data in all supported SPI modes. |
| CLK | Serial Clock Input | Edge-triggered clock up to 133 MHz; phase/polarity configurable for SPI modes 0 and 3. |
Key Features
| Feature | Design Value |
|---|---|
| Dual/Quad I/O & XiP Support | Enables 2×/4× bandwidth over standard SPI; 1-4-4 and 0-4-4 XiP modes allow direct code execution from flash in resource-limited MCUs. |
| Erase/Program Suspend-Resume | Allows background firmware update while servicing real-time interrupts-critical for automotive ECUs and medical monitors. |
| Ultra-Deep Power-Down (7 nA) | Reduces standby leakage to negligible levels during extended sleep cycles in battery-powered wireless sensors. |
| JEDEC SFDP Compliance | Permits automatic configuration by host bootloader via standardized parameter table (5Ah command), eliminating hard-coded timing constants. |
| OTP Security Registers | Three 128-byte one-time programmable areas store cryptographic keys, calibration data, or device-specific credentials with irreversible lock capability. |
Applications
| Industrial PLC Firmware Storage | Automotive Body Control Module (BCM) |
|---|---|
Use Scenario: Storing and updating ladder logic firmware in programmable logic controllers with infrequent but critical field upgrades. IC Role / Device Role / Timing Role: Non-volatile code storage with uniform 4-kB erase blocks enabling partial reprogramming without full chip erase. Use Value: 100k endurance and 20-year data retention ensure reliable operation across 15+ year product lifecycles in factory automation environments. | Use Scenario: Holding boot code and CAN protocol stack in body control modules requiring ASIL-B functional safety alignment. IC Role / Device Role / Timing Role: SPI-connected flash providing deterministic XiP execution latency via 1-4-4 mode for time-critical CAN message handling. Use Value: Hardware reset (99h) and JEDEC-compliant ID (9Fh) support safe recovery and traceability in automotive diagnostic workflows. |
| IoT Edge Sensor Node | Medical Wearable Data Logger |
Use Scenario: Persistent storage of sensor fusion algorithms and encrypted telemetry in BLE-enabled environmental monitors. IC Role / Device Role / Timing Role: Low-power serial flash with 7 nA UDPD current and OTP registers for secure key injection during manufacturing. Use Value: Dual-output read (3Bh) reduces active time during OTA updates, extending coin-cell battery life beyond 3 years. | Use Scenario: Recording physiological waveforms and calibration metadata in FDA-regulated wearable ECG patches. IC Role / Device Role / Timing Role: Trusted firmware storage with individual block protection (36h) to isolate certified algorithm partitions from user-configurable settings. Use Value: Factory-programmed UID and OTP registers meet IEC 62304 traceability requirements for software version control and audit trails. |
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 W25Q40EW | 4 Mbit, 1.7–1.95 V / 2.7–3.6 V dual supply; no UDPD mode (min 0.5 µA); lacks XiP 0-4-4 mode. | Requires separate 1.8 V rail; unsuitable for ultra-low-power wake-from-sleep use cases demanding sub-10 nA standby. | Select when system already provides dual-voltage rails and XiP execution is not required. |
| Macronix MX25L4005 | 4 Mbit, 2.7–3.6 V only; max 80 MHz clock; no OTP registers or SFDP; 10-year retention at +85°C only. | Lacks security and configurability features; limited to legacy 3.3 V designs with non-critical retention requirements. | Choose for cost-sensitive, non-security applications where voltage and timing margins are generous. |
Compared with W25Q40EW and MX25L4005, the AT25FF041A-SSHN-T delivers broader voltage flexibility (1.65–3.6 V), lower deep-sleep current (7 nA vs. µA-range), integrated OTP security, and full SFDP-driven auto-configuration-making it optimal for next-generation battery-powered and safety-certified embedded systems.
Availability
AT25FF041A-SSHN-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive BCM boot code, and IoT edge sensor node applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AT25FF041A-SSHN-T 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
Renesas Electronics is a global semiconductor leader specializing in microcontrollers, analog, power, and memory solutions for automotive, industrial, and IoT markets.
The AT25FF041A-SSHN-T belongs to Renesas' high-reliability serial flash memory product line, designed specifically for embedded systems needing secure, low-power, multi-I/O code storage with industrial temperature tolerance and long data retention.
FAQ
What is the operating voltage range of the AT25FF041A-SSHN-T?
The AT25FF041A-SSHN-T operates across a wide 1.65 V to 3.6 V supply range, enabling direct integration into both 1.8 V and 3.3 V systems without external level shifters. This dual-voltage compatibility simplifies power architecture in mixed-signal embedded designs and reduces bill-of-materials cost compared to narrow-range alternatives. The AT25FF041A-SSHN-T maintains full functionality-including 133 MHz quad I/O operation and 7 nA UDPD mode-across the entire specified range.
Does the AT25FF041A-SSHN-T support execute-in-place (XiP) operation?
Yes, the AT25FF041A-SSHN-T supports two XiP modes: 1-4-4 (1-pin command, 4-pin address, 4-pin data) and 0-4-4 (0-pin command, 4-pin address, 4-pin data), both compliant with JEDEC JESD216 standards. These modes enable direct instruction fetch by the host processor without internal buffering, reducing latency and memory footprint in resource-constrained MCUs. The AT25FF041A-SSHN-T's XiP capability is validated across its full temperature range (-40°C to +85°C) and voltage range (1.65–3.6 V).
How many one-time programmable (OTP) security registers does the AT25FF041A-SSHN-T include?
The AT25FF041A-SSHN-T includes three independent 128-byte OTP security registers (OTP0–OTP2), each programmable once and permanently lockable via dedicated commands (9Bh write, 98h lock). These registers are used for storing cryptographic keys, calibration coefficients, or device-unique identifiers in secure boot and anti-counterfeiting implementations. The AT25FF041A-SSHN-T also features a factory-programmed 128-byte unique identifier accessible via command 4Bh.
What is the minimum deep power-down current for the AT25FF041A-SSHN-T?
The AT25FF041A-SSHN-T achieves a typical ultra-deep power-down (UDPD) current of 7 nA at -40°C to +85°C, measured per JEDEC JESD78 test conditions. This ultra-low leakage enables multi-year battery operation in always-on sensor nodes and wearables. The AT25FF041A-SSHN-T enters UDPD mode via command 79h and resumes normal operation within 35 µs using ABh, preserving full SPI compatibility and timing predictability.
Is the AT25FF041A-SSHN-T compatible with JEDEC-standard Serial Flash Discoverable Parameters (SFDP)?
Yes, the AT25FF041A-SSHN-T fully complies with JEDEC JESD216B SFDP v1.6, exposing configurable parameters-including timing, erase granularity, and I/O capabilities-via command 5Ah. This allows host bootloaders to auto-detect and configure the AT25FF041A-SSHN-T without hardcoded assumptions, improving design portability across different flash vendors and simplifying firmware maintenance for multi-platform products.
AT25FF041A-SSHN-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH - NOR
- Memory Size:
- 4Mbit
- Memory Organization:
- 2M x 2
- Memory Interface:
- SPI - Quad I/O
- Clock Frequency:
- 104 MHz
- Write Cycle Time - Word, Page:
- 22µs, 2.6ms
- Access Time:
- -
- Voltage - Supply:
- 1.65V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT25FF041A-SSHN-T FAQ
1.How can I place an order for AT25FF041A-SSHN-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25FF041A-SSHN-T 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 AT25FF041A-SSHN-T reliable?
The price and inventory of AT25FF041A-SSHN-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25FF041A-SSHN-T is usually 5 days.
3.What payment methods are accepted for AT25FF041A-SSHN-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25FF041A-SSHN-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25FF041A-SSHN-T?
AT25FF041A-SSHN-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25FF041A-SSHN-T 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 AT25FF041A-SSHN-T?
For technical support, including AT25FF041A-SSHN-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25FF041A-SSHN-T requirements.
6.How does Aetrix verify that AT25FF041A-SSHN-T is sourced from the original manufacturer or authorized distributors?
All AT25FF041A-SSHN-T 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 AT25FF041A-SSHN-T meets industry standards.
7.What is the process for return or replacement of AT25FF041A-SSHN-T?
All AT25FF041A-SSHN-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25FF041A-SSHN-T, 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 AT25FF041A-SSHN-T part is unused and in its original packaging.
Return procedure for AT25FF041A-SSHN-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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