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Renesas AT25SF041B-SSHD-T
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- Part No.:
- AT25SF041B-SSHD-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT25SF041B-SSHD-T.pdf
- Description:
- IC FLASH 4MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:13,008
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Product details
Overview
AT25SF041B-SSHD-T from Renesas Electronics is a 4 M-bit SPI serial flash memory IC designed for embedded program storage and execute-in-place (XiP) applications. It supports dual I/O (1-2-2), quad I/O (1-4-4, 0-4-4), and standard SPI modes 0/3, operates up to 108 MHz, delivers 13.3 µA standby current, and features 4 kB/32 kB/64 kB block erase with typical times of 60 ms / 120 ms / 200 ms.
For engineers reviewing the AT25SF041B-SSHD-T datasheet, AT25SF041B-SSHD-T pinout, AT25SF041B-SSHD-T application, or AT25SF041B-SSHD-T equivalent, key selection considerations include XiP support via continuous read mode, OTP security registers, SFDP compliance, deep power-down (1.2 µA), and flexible memory protection via WP pin and status register configuration.
Technical Context
The AT25SF041B-SSHD-T implements a quad-SPI interface with configurable I/O pin mapping (SI/SO/WP/HOLD as I/O0–I/O3), enabling high-speed data transfer through 1-4-4 and 0-4-4 command formats. Its architecture includes a 4 Mbit flash array organized into 128 × 4 kB blocks, supporting byte/page programming (1–256 bytes) and multi-level erase granularity.
Internal control logic integrates erase/program suspend-resume capability, dual-status registers (SR1/SR2) with Quad Enable (QE) bit, and hardware write protection managed via WP pin state and SRP bits. The device uses JEDEC-standard Manufacturer and Device ID, Serial Flash Discoverable Parameters (SFDP), and supports unique ID read (4Bh) for system authentication.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 M-bit (512 KB) nonvolatile flash storage for firmware, boot code, or configuration data |
| Max Clock Frequency | 108 MHz - enables fast instruction fetch in XiP systems and reduces read latency |
| Erase Granularity | 4 kB / 32 kB / 64 kB blocks and full chip - allows selective firmware updates without erasing entire memory |
| Page Program Time | 0.4 ms typical - supports rapid field firmware patching and runtime parameter storage |
| Endurance & Retention | 100,000 program/erase cycles and 20-year data retention - suitable for industrial lifecycle requirements |
| Power Consumption | 13.3 µA standby / 1.2 µA deep power-down - extends battery life in always-on IoT edge nodes |
| Operating Voltage | 2.5 V–3.6 V or 2.7 V–3.6 V - compatible with modern low-voltage microcontrollers and PMIC rails |
Pinout & Package
AT25SF041B-SSHD-T is supplied in an 8-pin narrow-body SOIC (150-mil) package per ordering code suffix "-SSHD-T", with lead-free, RoHS-compliant finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; must transition low-to-high to complete operations and enter standby |
| SCK | Serial Clock | Input clock for SPI timing; rising edge latches input, falling edge clocks output |
| SI (I/O0) | Serial Input / Quad I/O 0 | Command/address/data input; becomes bidirectional I/O0 during dual/quad I/O reads |
| SO (I/O1) | Serial Output / Quad I/O 1 | Data output pin; functions as I/O1 in dual/quad I/O modes for parallel bit transfer |
| WP (I/O2) | Write Protect / Quad I/O 2 | Configurable: hardware write protect when QE=0; I/O2 during quad-SPI when QE=1 |
| HOLD (I/O3) | Hold / Quad I/O 3 | Pauses ongoing SPI transaction without resetting clock; becomes I/O3 in quad-SPI mode |
| VCC | Power Supply | 2.5–3.6 V supply rail; requires external decoupling capacitor per layout guidelines |
| GND | Ground Reference | System ground return path; must be low-impedance for stable read/write margins |
Key Features
| Feature | Design Value |
|---|---|
| Execute-in-Place (XiP) Support | Enables direct CPU instruction execution from flash via 0-4-4 continuous read mode, eliminating RAM copy overhead |
| Quad I/O & Dual I/O Modes | 1-4-4 and 1-2-2 protocols double/quadruple throughput vs standard SPI, reducing bus occupancy in bandwidth-constrained designs |
| Three 256-byte OTP Security Registers | Provides immutable storage for keys, certificates, or calibration data resistant to field reprogramming |
| Serial Flash Discoverable Parameters (SFDP) | Standardized JEDEC register (5Ah) allows automatic host driver configuration without hard-coded timing tables |
| User-Definable Memory Protection | Software-configurable protected zones at memory start/end, enforced by WP pin and status register lock bits |
Applications
| Industrial PLC Firmware Storage | IoT Edge Node Configuration |
|---|---|
Use Scenario: Storing firmware images and real-time control logic in programmable logic controllers with field-upgrade capability. IC Role / Device Role / Timing Role: Nonvolatile program memory providing boot code and runtime executable instructions via XiP. Use Value: 4 kB block erase enables incremental firmware patches without full reflash; 100K endurance supports decades of update cycles. | Use Scenario: Holding device-specific credentials, sensor calibration profiles, and OTA update metadata in battery-powered wireless sensors. IC Role / Device Role / Timing Role: Secure, low-power configuration store accessed intermittently during wake-up sequences. Use Value: 1.2 µA deep power-down current minimizes quiescent drain; OTP registers prevent credential tampering. |
| Medical Diagnostic Boot Loader | Automotive Infotainment UI Assets |
Use Scenario: Hosting certified boot loader and diagnostic application binaries in Class II medical devices requiring traceable firmware integrity. IC Role / Device Role / Timing Role: Trusted boot memory with read-protected regions and unique ID verification (4Bh command). Use Value: JEDEC-standard Device ID and SFDP ensure interoperability with certified bootloader stacks; 20-year retention meets regulatory shelf-life requirements. | Use Scenario: Caching graphical assets, voice prompts, and map tiles in automotive head units where fast UI response is critical. IC Role / Device Role / Timing Role: High-bandwidth XiP memory delivering pixel data directly to display controller over quad-SPI. Use Value: 108 MHz quad-I/O read speed reduces asset load latency; continuous read mode eliminates opcode overhead per burst. |
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 M-bit density, 133 MHz max clock, 1.65–1.95 V / 2.7–3.6 V dual voltage, no OTP registers | Lacks 256-byte OTP security registers and SFDP v1.6+ support; supports DTR mode not available on AT25SF041B-SSHD-T | Select for higher clock speed and lower VCC min; avoid if OTP-based secure boot is required |
| Micron MT25QL04A | 4 M-bit density, 133 MHz max clock, 1.7–2.0 V / 2.7–3.6 V dual voltage, supports octal DTR | Includes octal DTR mode and enhanced security (secure OTP, RPU), but requires different status register configuration and lacks HOLD pin functionality | Choose for future-proofing with octal interface or advanced security; verify HOLD pin dependency in existing design |
Compared with W25Q40EW and MT25QL04A, the AT25SF041B-SSHD-T offers native 2.5 V operation, integrated HOLD functionality, and three dedicated OTP registers-making it optimal for cost-sensitive, low-power XiP implementations where pin compatibility and simple security are prioritized over octal bandwidth or ultra-high clock rates.
Availability
AT25SF041B-SSHD-T is available at Aetrix Electronics and suitable for industrial PLCs, IoT edge nodes, medical diagnostics equipment, and automotive infotainment systems requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for AT25SF041B-SSHD-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 delivering microcontrollers, analog, power, and memory solutions for industrial, automotive, and IoT markets.
The AT25SF041B belongs to Renesas' serial NOR flash product line, engineered specifically for reliable, low-power, and secure code storage in resource-constrained embedded systems with execute-in-place requirements.
FAQ
What is the operating voltage range supported by the AT25SF041B-SSHD-T?
The AT25SF041B-SSHD-T supports two selectable voltage ranges: 2.5 V to 3.6 V and 2.7 V to 3.6 V. This dual-voltage capability ensures compatibility with both legacy 2.5 V logic families and modern 2.7–3.3 V microcontroller interfaces. The device automatically adapts to the applied VCC level without external configuration, and all DC/AC specifications-including 108 MHz maximum clock-are guaranteed across the full specified range.
Does the AT25SF041B-SSHD-T support execute-in-place (XiP) operation?
Yes, the AT25SF041B-SSHD-T explicitly supports execute-in-place (XiP) through optimized read performance features: quad I/O (1-4-4) and continuous read (0-4-4) command modes eliminate opcode overhead and deliver sustained high bandwidth. Combined with 108 MHz clock support and low-latency access, the AT25SF041B-SSHD-T enables direct CPU instruction fetch from flash memory-reducing RAM footprint and boot time in MCU-based systems.
How many one-time programmable (OTP) security registers does the AT25SF041B-SSHD-T include?
The AT25SF041B-SSHD-T includes three independent 256-byte one-time programmable (OTP) security registers. These registers are permanently locked after programming and support secure storage of cryptographic keys, device identifiers, or calibration data. Commands 42h (program), 48h (read), and 44h (erase) provide full access control, and their contents persist across power cycles and withstand standard reprogramming attempts.
What package type is used for the AT25SF041B-SSHD-T?
The AT25SF041B-SSHD-T uses an 8-pin narrow-body SOIC package (150-mil width), designated by the "-SSHD-T" suffix. It features gull-wing leads, Pb-free/RoHS-compliant finish, and is rated for industrial temperature range (–40 °C to +85 °C). This package is pin-compatible with industry-standard 8-lead SOIC footprints and supports automated surface-mount assembly.
Can the AT25SF041B-SSHD-T be used with standard SPI controllers that do not support quad I/O?
Yes, the AT25SF041B-SSHD-T is fully backward-compatible with standard SPI controllers. It supports SPI modes 0 and 3 using only SI and SO pins for single-bit communication (1-1-1), while retaining all core functionality including program, erase, and protection commands. Quad I/O and dual I/O modes are optional enhancements activated via status register configuration-no hardware changes are needed to operate in legacy SPI mode.
AT25SF041B-SSHD-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:
- 512K x 8
- Memory Interface:
- SPI - Quad I/O
- Clock Frequency:
- 108 MHz
- Write Cycle Time - Word, Page:
- 50µs, 2.4ms
- Access Time:
- -
- Voltage - Supply:
- 2.5V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT25SF041B-SSHD-T FAQ
1.How can I place an order for AT25SF041B-SSHD-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25SF041B-SSHD-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 AT25SF041B-SSHD-T reliable?
The price and inventory of AT25SF041B-SSHD-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT25SF041B-SSHD-T is usually 5 days.
3.What payment methods are accepted for AT25SF041B-SSHD-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25SF041B-SSHD-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25SF041B-SSHD-T?
AT25SF041B-SSHD-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25SF041B-SSHD-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 AT25SF041B-SSHD-T?
For technical support, including AT25SF041B-SSHD-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25SF041B-SSHD-T requirements.
6.How does Aetrix verify that AT25SF041B-SSHD-T is sourced from the original manufacturer or authorized distributors?
All AT25SF041B-SSHD-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 AT25SF041B-SSHD-T meets industry standards.
7.What is the process for return or replacement of AT25SF041B-SSHD-T?
All AT25SF041B-SSHD-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25SF041B-SSHD-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 AT25SF041B-SSHD-T part is unused and in its original packaging.
Return procedure for AT25SF041B-SSHD-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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