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Renesas AT25FF041A-SSHN-B
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- Part No.:
- AT25FF041A-SSHN-B
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT25FF041A-SSHN-B.pdf
- Description:
- IC FLASH 4MBIT SPI/QUAD 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,251
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Product details
Overview
AT25FF041A-SSHN-B 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 capability. It serves as non-volatile program/data storage in microcontroller boot loaders, firmware update partitions, and IoT edge device configuration memory.
For engineers reviewing the AT25FF041A-SSHN-B datasheet, AT25FF041A-SSHN-B pinout, AT25FF041A-SSHN-B application, or AT25FF041A-SSHN-B equivalent, key selection criteria include multi-I/O timing compatibility, deep power-down current (7 nA), JEDEC SFDP support, OTP security register availability, and -40°C to +105°C extended temperature grade.
Technical Context
The AT25FF041A-SSHN-B implements a flexible SPI-compatible command set with hardware reset (JEDEC standard), volatile/non-volatile status registers, and nested erase/program suspend-resume functionality. Its architecture supports both standard and wrap-mode burst reads, with configurable drive strength on I/O pins.
Memory protection includes individual block lock/unlock (36h/39h), global lock/unlock (7Eh/98h), and user-definable protected regions at memory start or end. The device integrates three 128-byte OTP security registers and one factory-programmed 128-byte unique ID for secure firmware authentication.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512 KB) organized as 64 × 64-kB blocks; enables compact firmware storage without external address latching. |
| Interface Modes | SPI modes 0/3, dual-output (1-1-2), quad-output (1-1-4), quad I/O XiP (1-4-4, 0-4-4); allows bandwidth scaling from 104 MB/s to >300 MB/s effective throughput. |
| Max Clock Frequency | 133 MHz in quad I/O XiP mode; supports high-speed code execution directly from flash (XiP) in resource-constrained MCUs. |
| Erase Granularity | Uniform 4-kB, 32-kB, 64-kB blocks and full-chip erase; enables fine-grained firmware updates without disturbing adjacent application sections. |
| Power Consumption | 7 nA Ultra-Deep Power-Down current; extends battery life in always-on sensor nodes and wearable devices during idle periods. |
| Endurance & Retention | 100k P/E cycles at -40°C to +85°C; 10 years data retention at -40°C to +105°C - validated for automotive infotainment and industrial control logging. |
| Security Features | 3 × 128-byte OTP registers + 1 × 128-byte factory UID; provides immutable keys and device identity for secure boot and anti-cloning. |
Pinout & Package
AT25FF041A-SSHN-B uses an 8-lead, 208-mil Wide SOIC package (package code "W") per Renesas ordering information (DS-AT25FF041A-184, Rev. N, Page 108). Pin functions are defined in Table 1 of the datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS# | Chip Select Input | Active-low enable for SPI command/address/data transfers; supports daisy-chaining multiple flash devices on shared bus. |
| SO | Serial Output | Master-in/slave-out data line; bidirectional in quad I/O mode (functions as IO0–IO3 when configured). |
| WP# | Write Protect Input | Hardware-enabled memory protection; asserts low to prevent accidental writes/erases during power transitions or noise events. |
| GND | Ground Reference | Common return path for all digital and analog circuitry; requires low-impedance PCB connection to minimize noise coupling. |
| VCC | Supply Voltage | 1.65 V–3.6 V single-supply input; compatible with 1.8 V and 3.3 V logic domains without level-shifting. |
| HOLD# | Hold Input | Pauses ongoing read/write operations without deselecting chip; enables time-critical interrupt handling in real-time systems. |
| SI | Serial Input | Master-out/slave-in data line; accepts commands, addresses, and program data; shares pin with SO in standard SPI mode. |
| CLK | Serial Clock Input | Edge-triggered synchronous interface clock; phase/polarity configurable for SPI modes 0 and 3. |
Key Features
| Feature | Design Value |
|---|---|
| Quad I/O XiP Mode | Enables direct code execution from flash via 4-bit address/data bus (1-4-4), reducing MCU external memory controller overhead and PCB routing complexity. |
| Erase/Program Suspend | Allows interruption of long-duration erase/program operations to service higher-priority tasks, then resume - critical for deterministic real-time response. |
| Serial Flash Discoverable Parameters (SFDP) | Provides standardized, software-readable JEDEC SFDP table (command 5Ah) for automatic configuration of timing, voltage, and feature sets across host platforms. |
| User-Configurable Drive Strength | Adjusts I/O pin output drive levels in software to optimize signal integrity and EMI performance for varying trace lengths and load capacitances. |
| Deep Power-Down Recovery | Resumes operation within 35 µs after DPD exit (ABh command), enabling rapid wake-up from ultra-low-power sleep states in battery-powered endpoints. |
Applications
| Industrial PLC Firmware Storage | Automotive ADAS Boot Memory |
|---|---|
Use Scenario: Storing bootloader and safety-critical firmware images in programmable logic controllers operating continuously in harsh factory environments. IC Role / Device Role / Timing Role: Non-volatile boot memory with fast random access and robust ECC-free reliability for deterministic startup sequences. Use Value: 100k endurance and 20-year data retention at -40°C to +85°C ensure firmware integrity over 15+ year equipment lifecycles without refresh. | Use Scenario: Holding camera calibration data and sensor fusion algorithms in autonomous driving ECUs requiring immediate post-power-on execution. IC Role / Device Role / Timing Role: Quad I/O XiP-capable flash enabling zero-wait-state code execution directly from memory, eliminating external RAM copy latency. Use Value: 133 MHz XiP clock and 7 nA UDPD current reduce system wake-up time and extend vehicle key-off battery life beyond ISO 16750 limits. |
| Medical Wearable Configuration | Smart Meter Secure Logging |
Use Scenario: Storing patient-specific therapy parameters and usage logs in compact, battery-operated insulin pumps and ECG patches. IC Role / Device Role / Timing Role: Low-power serial flash with OTP registers for cryptographic key binding and tamper-evident audit trail storage. Use Value: Three 128-byte OTP registers allow permanent storage of asymmetric key pairs and device certificates, meeting IEC 62304 Class C security requirements. | Use Scenario: Recording energy consumption history and firmware update metadata in utility meters deployed in unattended outdoor locations. IC Role / Device Role / Timing Role: Temperature-hardened (–40°C to +105°C) flash with individual block protection for segregated tariff tables and event logs. Use Value: Uniform 4-kB block erase permits daily log rotation without wear-leveling overhead, while hardware WP# prevents unauthorized firmware rollback attacks. |
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 density, 1.7–1.95 V supply only; no quad I/O XiP (1-4-4) support; 104 MHz max clock; lacks OTP registers and SFDP v1.6 compliance. | Targeted at cost-sensitive consumer electronics where extended voltage range and advanced XiP features are unnecessary. | Select W25Q40EW only if design operates strictly at 1.8 V and does not require XiP execution or field-programmable security keys. |
| Micron MT25QL04A | 4 Mbit density, 1.7–2.0 V or 2.7–3.6 V dual-voltage option; supports XiP (1-4-4) and SFDP; no factory UID; OTP limited to 1 × 128-byte register. | Suitable for industrial gateways needing XiP but lacking need for device-unique identity or triple OTP redundancy. | Choose MT25QL04A when dual-voltage flexibility is required and single OTP register suffices for secure boot key storage. |
Compared with W25Q40EW and MT25QL04A, the AT25FF041A-SSHN-B uniquely combines 1.65–3.6 V universal supply, full quad I/O XiP, three OTP registers plus factory UID, and JEDEC SFDP v1.6 - making it the only option qualified for extended-temperature automotive and medical firmware storage with cryptographic binding.
Availability
AT25FF041A-SSHN-B is available at Aetrix Electronics and suitable for industrial PLC firmware storage, automotive ADAS boot memory, and medical wearable configuration requiring stable component supply across long production lifecycles.
Supply support for AT25FF041A-SSHN-B 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 Japanese semiconductor manufacturer specializing in microcontrollers, analog, power, and memory solutions for automotive, industrial, and IoT markets.
The AT25FF041A belongs to Renesas' high-reliability serial flash product line, designed specifically for mission-critical firmware storage in extended-temperature, low-power, and security-sensitive embedded systems.
FAQ
What is the operating temperature range for the AT25FF041A-SSHN-B?
The AT25FF041A-SSHN-B is rated for operation from –40°C to +105°C, as confirmed in the Electrical Specifications section (Section 8.4 and 8.10) of the official Renesas datasheet DS-AT25FF041A-184. This extended temperature grade supports deployment in under-hood automotive ECUs and industrial control cabinets without thermal derating.
Does the AT25FF041A-SSHN-B support execute-in-place (XiP) operation?
Yes, the AT25FF041A-SSHN-B supports quad I/O XiP operation using 1-4-4 and 0-4-4 command protocols (Section 5.6), enabling direct code execution from flash without copying to RAM. This capability is verified in the datasheet's timing diagrams (Figures 15–17) and AC characteristics tables (Tables 21–24).
How many One Time Programmable (OTP) registers does the AT25FF041A-SSHN-B include?
The AT25FF041A-SSHN-B includes three 128-byte One Time Programmable (OTP) security registers, as specified in the Features section (page 1) and detailed in Tables 28–31 of the Renesas datasheet. These registers are used for storing immutable cryptographic keys and device-specific credentials.
What package type is used by the AT25FF041A-SSHN-B?
The AT25FF041A-SSHN-B uses an 8-lead, 208-mil Wide SOIC package, identified by the "W" suffix in Renesas' ordering information (DS-AT25FF041A-184, Page 108). This package meets JEDEC MS-012 standards and supports reflow soldering per IPC/JEDEC J-STD-020.
Is Serial Flash Discoverable Parameters (SFDP) supported on the AT25FF041A-SSHN-B?
Yes, the AT25FF041A-SSHN-B fully supports JEDEC-standard Serial Flash Discoverable Parameters (SFDP) via command 5Ah, as documented in Section 7.37 and Table 20 of the datasheet. The SFDP table provides host systems with programmable timing, voltage, and feature configuration data without hard-coded assumptions.
AT25FF041A-SSHN-B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 4Mbit
- Memory Organization:
- 2M x 2
- Memory Interface:
- SPI - Quad I/O
- Clock Frequency:
- 104 MHz
- Write Cycle Time - Word, Page:
- 22µs, 6.5ms
- 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-B FAQ
1.How can I place an order for AT25FF041A-SSHN-B through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25FF041A-SSHN-B 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-B reliable?
The price and inventory of AT25FF041A-SSHN-B 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-B is usually 5 days.
3.What payment methods are accepted for AT25FF041A-SSHN-B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25FF041A-SSHN-B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25FF041A-SSHN-B?
AT25FF041A-SSHN-B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25FF041A-SSHN-B 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-B?
For technical support, including AT25FF041A-SSHN-B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25FF041A-SSHN-B requirements.
6.How does Aetrix verify that AT25FF041A-SSHN-B is sourced from the original manufacturer or authorized distributors?
All AT25FF041A-SSHN-B 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-B meets industry standards.
7.What is the process for return or replacement of AT25FF041A-SSHN-B?
All AT25FF041A-SSHN-B units undergo pre-shipment inspection (PSI). If there is an issue with AT25FF041A-SSHN-B, 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-B part is unused and in its original packaging.
Return procedure for AT25FF041A-SSHN-B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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