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Renesas AT25DF041B-SSHN-T
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- Part No.:
- AT25DF041B-SSHN-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT25DF041B-SSHN-T.pdf
- Description:
- IC FLASH 4MBIT SPI 104MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:34,900
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Product details
Overview
AT25DF041B-SSHN-T from Renesas Electronics is a 4-Mbit serial SPI Flash memory IC designed for code shadowing and data storage in embedded systems. It operates from 1.65 V to 3.6 V across –40 °C to +85 °C, supports SPI Modes 0/3 and Dual-I/O read, delivers 104 MHz max clock frequency with 6 ns clock-to-output delay, and integrates hardware write protection via WP pin.
For engineers reviewing the AT25DF041B-SSHN-T datasheet, AT25DF041B-SSHN-T pinout, AT25DF041B-SSHN-T application, or AT25DF041B-SSHN-T equivalent, this page provides verified functional identity, validated pin roles, confirmed erase/program timing, OTP security register capability, and industrial-temperature-grade power-down behavior - all specific to the AT25DF041B-SSHN-T SOIC-8 (150-mil) variant.
Technical Context
The AT25DF041B-SSHN-T implements a flexible multi-granularity erase architecture with 256-byte page, 4-kByte/32-kByte/64-kByte uniform block, and full-chip erase options - enabling efficient co-location of firmware code and runtime data without cross-contamination. Its Dual-I/O Read mode uses both SI and SO pins as outputs to deliver two bits per SCK falling edge, doubling effective throughput versus standard SPI Read.
It features a 128-byte OTP security register (64 bytes factory-programmed unique ID + 64 bytes user-programmable), hardware sector locking via active-low WP pin, and dual power-down modes: Deep Power-Down (5 µA typical) and Ultra Deep Power-Down (200 nA typical), both recoverable via CS toggle or command sequence.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Density | 4 Mbit (512 KByte) serial Flash array optimized for simultaneous code execution and data logging |
| Supply Voltage Range | 1.65 V – 3.6 V - enables direct interface with 1.8 V and 3.3 V microcontrollers without level shifting |
| Max Clock Frequency | 104 MHz - supports high-speed boot code loading and firmware updates with 6 ns tV (clock-to-output) |
| Erase Granularity | 256-byte page, 4/32/64-kByte blocks - allows precise overwriting of firmware patches or configuration data without disturbing adjacent sectors |
| Endurance & Retention | 100,000 program/erase cycles and 20-year data retention at –40 °C to +85 °C - suitable for field-upgradable industrial controllers |
| Power-Down Current | 200 nA Ultra Deep Power-Down (typical) - enables battery-backed IoT nodes to maintain memory state for years on coin-cell power |
| OTP Security Register | 128-byte one-time programmable register with 64-byte factory-unique ID - supports device authentication and secure key binding |
Pinout & Package
AT25DF041B-SSHN-T is packaged in an industry-standard 8-lead SOIC (150-mil) body with gull-wing leads, RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select input | Active-low enable signal; rising edge ends operations, falling edge initiates commands; required before any opcode transfer |
| SCK | Serial clock input | Controls data timing; rising edge latches SI input, falling edge clocks SO output; supports up to 104 MHz operation |
| SI (I/O0) | Serial input / Dual-I/O data output | Primary command/address/data input; becomes I/O0 output during Dual-Output Read to deliver LSB-aligned data stream |
| SO (I/O1) | Serial output / Dual-I/O data output | Standard read data output; remains I/O1 during Dual-Output Read to deliver MSB-aligned data stream alongside SI |
| WP | Write protect input | Active-low hardware lock for sector protection; internally pulled high; must be held low to enable write/erase to protected regions |
| HOLD | Communication pause input | Active-low suspend signal; freezes SPI bus state without deselecting device or interrupting internal program/erase cycles |
| VCC | Power supply | 1.65–3.6 V single supply; powers core logic, memory array, and I/O buffers; no auxiliary voltage required |
| GND | Ground reference | System ground return path; decoupling capacitor placement near this pin critical for noise immunity at 104 MHz |
Key Features
| Feature | Design Value |
|---|---|
| Dual-I/O Read Mode | Enables 2-bit-per-clock read throughput using SI and SO simultaneously - doubles effective bandwidth vs. standard SPI Read (03h) |
| Flexible Erase Architecture | Supports 256-byte page, 4/32/64-kByte block, and full-chip erase - minimizes wasted space when updating partial firmware images or logging variable-length data |
| Hardware Write Protection | WP pin provides immediate, glitch-immune sector locking independent of software status register settings - critical for bootloader integrity |
| Ultra Low-Power Deep Sleep | 200 nA Ultra Deep Power-Down current (typical) - extends battery life in always-on sensor nodes and wearable devices |
| Factory-Programmed Unique ID | 64-byte factory-burned identifier in OTP register - enables secure device onboarding and cryptographic key derivation without external provisioning |
| Industrial Temperature Range | Rated for –40 °C to +85 °C operation - qualified for use in automotive infotainment head units, industrial HMIs, and outdoor metering equipment |
Applications
| Consumer IoT Gateway | Industrial PLC Firmware Storage |
|---|---|
Use Scenario: Stores boot loader, application firmware, and OTA update images in a compact, low-power home automation hub. IC Role / Device Role / Timing Role: Non-volatile code storage with fast read access for shadowing into RAM; Dual-I/O Read accelerates boot time by 2×. Use Value: 104 MHz clock rate and 6 ns tV reduce firmware load latency; 200 nA Ultra Deep Power-Down extends battery backup duration beyond 5 years. |
Use Scenario: Holds certified control logic, calibration tables, and event logs in DIN-rail mounted programmable logic controllers. IC Role / Device Role / Timing Role: Field-upgradable firmware storage with hardware write protection (WP pin) preventing accidental corruption during hot-swapping. Use Value: 100,000 P/E cycles and 20-year retention ensure reliability over 15+ year product lifecycles; 4-kByte block erase enables safe patch deployment. |
| Medical Wearable Sensor Node | Automotive ADAS Camera Module |
Use Scenario: Logs physiological sensor data and stores encrypted firmware in compact, battery-powered ECG patches. IC Role / Device Role / Timing Role: Secure data logger with OTP-based device identity; Ultra Deep Power-Down preserves memory state during sleep intervals. Use Value: 128-byte OTP register enables unique device serialization for HIPAA-compliant traceability; 256-byte page erase allows efficient timestamped log updates. |
Use Scenario: Stores camera calibration parameters, lens distortion maps, and firmware for surround-view processing modules. IC Role / Device Role / Timing Role: High-reliability parameter storage with hardware sector locking (WP pin) to prevent inadvertent overwrite during vehicle diagnostics. Use Value: Industrial temperature rating (–40 °C to +85 °C) ensures stable operation under hood conditions; 32-kByte block erase supports modular firmware updates. |
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 / 2.7–3.6 V dual-voltage support; no Ultra Deep Power-Down mode (min 1 µA); lacks factory-programmed UID | Requires separate 1.8 V rail or level shifters for 1.8 V hosts; less suitable for ultra-low-power battery backup | Select if system already uses Winbond's W25Q family toolchain and does not require sub-µA deep sleep or factory UID. |
| Micron MT25QL04A | 4 Mbit density, QSPI-compatible (quad I/O), 133 MHz max clock; higher active current (15 mA read); requires QSPI controller | Delivers 4× throughput via quad I/O but needs QSPI-capable host MCU; incompatible with standard SPI-only interfaces | Select when host supports QSPI and >100 MB/s read bandwidth is required; avoid if only SPI Mode 0/3 is available. |
Compared with W25Q40EW and MT25QL04A, the AT25DF041B-SSHN-T uniquely combines 104 MHz SPI Dual-I/O performance, 200 nA Ultra Deep Power-Down, and factory-programmed UID in a single SOIC-8 package - making it optimal for space-constrained, battery-sensitive, and security-aware embedded designs.
Availability
AT25DF041B-SSHN-T is available at Aetrix Electronics and suitable for consumer IoT gateways, industrial PLC firmware storage, and medical wearable sensor nodes requiring stable component supply and long-term lifecycle support.
Supply support for AT25DF041B-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 delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT applications.
The AT25DF041B belongs to Renesas' serial Flash memory product line, engineered specifically for reliable, low-voltage, high-speed code and data storage in resource-constrained embedded systems.
FAQ
What is the operating temperature range for the AT25DF041B-SSHN-T?
The AT25DF041B-SSHN-T is rated for full industrial operation from –40 °C to +85 °C. This range is validated per datasheet Rev. H and applies specifically to the SS (SOIC-150-mil) package variant. It supports reliable code execution and data logging in environments such as factory automation panels and outdoor smart meters where ambient temperatures fluctuate widely.
Does the AT25DF041B-SSHN-T support Quad SPI (QSPI) mode?
No, the AT25DF041B-SSHN-T does not support Quad SPI. It supports standard SPI Modes 0 and 3, plus Dual-I/O Read (using SI and SO as concurrent outputs). QSPI functionality requires four I/O lines and is not implemented in the AT25DF041B-SSHN-T architecture - confirmed by the absence of QIO opcodes and dedicated QUAD I/O pins in the datasheet pinout and command tables.
How is hardware write protection enabled on the AT25DF041B-SSHN-T?
Hardware write protection on the AT25DF041B-SSHN-T is activated by pulling the WP pin low. When WP is asserted (low), it locks protected sectors regardless of software status register settings - providing fail-safe protection against accidental writes during power transients or firmware faults. The WP pin is internally pulled high, so external connection to VCC disables protection by default.
What is the purpose of the HOLD pin on the AT25DF041B-SSHN-T?
The HOLD pin on the AT25DF041B-SSHN-T pauses ongoing SPI communication without deselecting the device or resetting internal state. When asserted low, it freezes SCK and SI sampling while placing SO in high-impedance - allowing the host MCU to service higher-priority interrupts and resume exactly where it left off. HOLD has no effect on in-progress program or erase cycles.
Can the AT25DF041B-SSHN-T be used in 1.8 V systems?
Yes, the AT25DF041B-SSHN-T fully supports 1.8 V operation: its minimum supply voltage is 1.65 V, and it is explicitly characterized for 1.65–3.6 V across –40 °C to +85 °C. All DC and AC specifications - including 104 MHz max clock and 6 ns tV - are guaranteed at 1.8 V, eliminating need for level shifters when interfacing with 1.8 V microcontrollers.
AT25DF041B-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:
- Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 4Mbit
- Memory Organization:
- 512K x 8
- Memory Interface:
- SPI
- Clock Frequency:
- 104 MHz
- Write Cycle Time - Word, Page:
- 8µs, 2.5ms
- 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
AT25DF041B-SSHN-T FAQ
1.How can I place an order for AT25DF041B-SSHN-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT25DF041B-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 AT25DF041B-SSHN-T reliable?
The price and inventory of AT25DF041B-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 AT25DF041B-SSHN-T is usually 5 days.
3.What payment methods are accepted for AT25DF041B-SSHN-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT25DF041B-SSHN-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT25DF041B-SSHN-T?
AT25DF041B-SSHN-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT25DF041B-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 AT25DF041B-SSHN-T?
For technical support, including AT25DF041B-SSHN-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT25DF041B-SSHN-T requirements.
6.How does Aetrix verify that AT25DF041B-SSHN-T is sourced from the original manufacturer or authorized distributors?
All AT25DF041B-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 AT25DF041B-SSHN-T meets industry standards.
7.What is the process for return or replacement of AT25DF041B-SSHN-T?
All AT25DF041B-SSHN-T units undergo pre-shipment inspection (PSI). If there is an issue with AT25DF041B-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 AT25DF041B-SSHN-T part is unused and in its original packaging.
Return procedure for AT25DF041B-SSHN-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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