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Renesas AT45DB041E-SSHN2B-T
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- Part No.:
- AT45DB041E-SSHN2B-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT45DB041E-SSHN2B-T.pdf
- Description:
- IC FLASH 4MBIT SPI 85MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:16,533
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Product details
Overview
AT45DB041E-SSHN2B-T from Renesas Electronics is a 4-Mbit serial DataFlash memory with extra 128 kbits, supporting SPI modes 0 and 3, RapidS™ operation up to 85 MHz, and dual 256/264-byte SRAM buffers for concurrent read/write. It operates from 1.65 V to 3.6 V and enables continuous data streaming in embedded voice, firmware storage, and industrial logging systems.
For engineers reviewing the AT45DB041E-SSHN2B-T datasheet, AT45DB041E-SSHN2B-T pinout, AT45DB041E-SSHN2B-T application, or AT45DB041E-SSHN2B-T equivalent, key selection factors include page size configurability (256 vs. 264 bytes), ultra-deep power-down current (400 nA), program/erase suspend/resume capability, and sector lockdown for permanent read-only protection.
Technical Context
The AT45DB041E-SSHN2B-T implements a sequential-access Flash architecture with two independent SRAM buffers, enabling true interleaved programming: one buffer accepts new data while the other transfers content to main memory. Its RapidS™ mode supports high-frequency continuous array reads using opcodes 0Bh and 1Bh, achieving 6 ns clock-to-output timing.
Memory organization comprises 2,048 pages of 256 or 264 bytes (factory-configurable), plus 128-byte OTP security register with 64-byte factory-unique ID and 64-byte user-programmable space. Sector protection and hardware/software reset options support robust field-upgrade and secure boot implementations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Capacity | 4 Mbits (512 kB) main memory + 128 kbits extra space; organized as 2,048 × 256/264-byte pages |
| Supply Voltage | 1.65 V – 3.6 V single supply; enables direct interface with low-voltage MCUs without level shifters |
| Max Clock Frequency | 85 MHz (RapidS™ mode); supports high-throughput firmware updates and real-time audio buffering |
| Power Consumption | 400 nA ultra-deep power-down (typical); reduces system standby leakage in battery-powered edge nodes |
| Endurance & Retention | 100,000 program/erase cycles at -40°C to +85°C; 20-year data retention ensures long-life industrial deployment |
| Page Size | User-configurable 256 or 264 bytes; 264-byte default includes 8-byte overhead for ECC/metadata handling |
| Security Features | 128-byte OTP security register; sector lockdown makes protected sectors permanently read-only |
Pinout & Package
AT45DB041E-SSHN2B-T uses an 8-pin SOIC package (208-mil wide), RoHS-compliant and green-packaged. Pin functions are defined per JEDEC standard with no internal connection to the exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; places device in standby (not deep power-down) when deasserted; SO enters high-Z state |
| SCK | Serial Clock | Input clock synchronizing all SPI transactions; supports modes 0 and 3; max 85 MHz in RapidS™ |
| SI | Serial Input | Data input for commands, addresses, and write data; sampled on SCK rising/falling edge per SPI mode |
| SO | Serial Output | Data output for reads and status; tri-stated when CS is high; 6 ns tV enables tight timing margins |
| WP | Write Protect | Hardware sector protection control; low = protection enabled per sector lock bits; overrides software protection |
| RESET | Reset Input | Active-low hardware reset; returns device to power-on state; optional alternative to software reset command |
| VCC | Power Supply | 1.65–3.6 V core supply; powers logic, memory, and I/O; decoupling required per datasheet layout guidelines |
| GND | Ground | Reference for all signals and power; must be low-impedance; UDFN thermal pad may be connected to GND |
Key Features
| Feature | Design Value |
|---|---|
| Dual SRAM Buffers | Two independent 256/264-byte buffers allow simultaneous data reception and main memory reprogramming, enabling uninterrupted data logging |
| RapidS™ Interface | High-speed continuous read mode (opcodes 0Bh/1Bh) delivers up to 85 MHz throughput-critical for real-time audio/video streaming |
| Flexible Erase Granularity | Page (256/264 B), block (2 kB), sector (64 kB), and chip (4 Mbit) erase options optimize wear leveling and firmware update efficiency |
| Program/Erase Suspend | Interrupt active programming or erasing to service urgent reads; resumes automatically-essential for deterministic real-time response |
| OTP Security Register | 128-byte one-time programmable register with 64-byte factory-unique ID and 64-byte user space for secure key storage or device binding |
| Sector Lockdown | Hardware-enforced permanent read-only lock on any sector; irreversible via WP pin or command-prevents malicious or accidental overwrite |
Applications
| Firmware Storage | Industrial Data Logging |
|---|---|
Use Scenario: Storing MCU boot code and field-upgradable application binaries in PLCs and motor drives. IC Role / Device Role / Timing Role: Nonvolatile program memory accessed via SPI during cold start and OTA updates. Use Value: 100,000-cycle endurance and 20-year retention ensure reliable operation across 15+ year product lifecycles. |
Use Scenario: Continuous timestamped sensor data capture in environmental monitoring gateways. IC Role / Device Role / Timing Role: High-throughput sequential write buffer with concurrent read capability during data transfer. Use Value: Dual SRAM buffers enable seamless interleaving-no data loss during page reprogramming at 15 MHz sustained rate. |
| Secure Boot Configuration | Audio Voice Recording |
Use Scenario: Storing cryptographic keys and immutable boot policy in medical diagnostic devices. IC Role / Device Role / Timing Role: OTP security register and sector lockdown provide hardware-rooted trust anchor. Use Value: 64-byte factory-unique ID enables device identity binding; sector lockdown prevents tampering with critical boot sectors. |
Use Scenario: Embedded voice record/playback in smart home intercoms and voice-controlled appliances. IC Role / Device Role / Timing Role: Low-power sequential memory supporting continuous 8-bit PCM streaming at 8–16 kHz. Use Value: Ultra-deep power-down (400 nA) extends battery life in always-listening modes; RapidS™ enables fast playback seek. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT45DB041D-SSHN2B | Predecessor generation; lacks RapidS™ mode, max clock 66 MHz, no ultra-deep power-down (min 1 µA) | Lower performance and power efficiency; suitable only where legacy compatibility or cost sensitivity outweighs speed/power gains | Select AT45DB041E-SSHN2B-T when RapidS™ throughput or sub-µA standby is required; not drop-in due to timing and command set differences |
| W25Q40EWUXIE | 4 Mbit Quad SPI NOR Flash; supports QPI/DTR, 133 MHz max, but no SRAM buffers or RapidS™ sequential optimization | Better random access latency; less efficient for continuous streaming; no built-in read-modify-write or sector lockdown | Choose W25Q40EWUXIE for systems needing fast random reads or existing Quad SPI infrastructure; AT45DB041E-SSHN2B-T excels in sequential streaming with buffer concurrency |
Compared with AT45DB041D-SSHN2B, the AT45DB041E-SSHN2B-T adds RapidS™ acceleration and 400 nA ultra-deep power-down, while versus W25Q40EWUXIE it provides dedicated sequential architecture with dual buffers and hardware sector lockdown-making it superior for streaming, logging, and secure firmware storage.
Availability
AT45DB041E-SSHN2B-T is available at Aetrix Electronics and suitable for firmware storage, industrial data logging, secure boot configuration, and audio voice recording requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for AT45DB041E-SSHN2B-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 automotive, industrial, and IoT applications.
The AT45DB041E belongs to Renesas' DataFlash® family, designed specifically for high-reliability, low-pin-count, sequential-access nonvolatile storage in resource-constrained embedded systems.
FAQ
What is the maximum operating frequency of the AT45DB041E-SSHN2B-T in RapidS™ mode?
The AT45DB041E-SSHN2B-T supports up to 85 MHz in RapidS™ mode using opcodes 0Bh or 1Bh for continuous array reads. This exceeds standard SPI timing limits and enables high-throughput streaming applications. The AT45DB041E-SSHN2B-T achieves a clock-to-output time (tV) of 6 ns maximum, ensuring tight timing margins in high-speed designs.
How does the dual-buffer architecture of the AT45DB041E-SSHN2B-T improve system performance?
The AT45DB041E-SSHN2B-T features two independent 256/264-byte SRAM buffers that allow concurrent data reception into one buffer while the other transfers content to main memory. This eliminates write stalls during page reprogramming and enables uninterrupted data logging or audio streaming. The AT45DB041E-SSHN2B-T leverages this for true interleaved operation-critical in real-time embedded systems.
Can the AT45DB041E-SSHN2B-T be used in automotive applications?
The AT45DB041E-SSHN2B-T is rated for the full industrial temperature range (-40 °C to +85 °C) and offers 100,000 program/erase cycles and 20-year data retention. While not AEC-Q100 qualified, its specifications meet requirements for under-hood and cabin control modules in non-safety-critical automotive subsystems. For safety-critical use, consult Renesas' automotive-grade variants.
What security mechanisms does the AT45DB041E-SSHN2B-T provide beyond standard write protection?
The AT45DB041E-SSHN2B-T includes hardware sector lockdown (irreversible read-only lock), a 128-byte OTP security register with 64-byte factory-unique ID, and individual sector protection registers. Unlike basic WP pin control, sector lockdown persists through power cycles and cannot be cleared-providing tamper-resistant storage for boot code or cryptographic keys in the AT45DB041E-SSHN2B-T.
Is the page size of the AT45DB041E-SSHN2B-T configurable, and how does it affect memory usage?
Yes-the AT45DB041E-SSHN2B-T supports factory-configured 256-byte or 264-byte pages. The 264-byte default includes 8 bytes for metadata/ECC; 256-byte mode maximizes usable payload per page. Configuration affects addressing and command sequences-both modes are fully supported, but firmware must match the configured size. The AT45DB041E-SSHN2B-T's flexibility aids optimization for either density or reliability.
AT45DB041E-SSHN2B-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:
- 256 Bytes x 2048 pages
- Memory Interface:
- SPI
- Clock Frequency:
- 85 MHz
- Write Cycle Time - Word, Page:
- 8µs, 3ms
- 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
AT45DB041E-SSHN2B-T FAQ
1.How can I place an order for AT45DB041E-SSHN2B-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DB041E-SSHN2B-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 AT45DB041E-SSHN2B-T reliable?
The price and inventory of AT45DB041E-SSHN2B-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT45DB041E-SSHN2B-T is usually 5 days.
3.What payment methods are accepted for AT45DB041E-SSHN2B-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DB041E-SSHN2B-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DB041E-SSHN2B-T?
AT45DB041E-SSHN2B-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DB041E-SSHN2B-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 AT45DB041E-SSHN2B-T?
For technical support, including AT45DB041E-SSHN2B-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DB041E-SSHN2B-T requirements.
6.How does Aetrix verify that AT45DB041E-SSHN2B-T is sourced from the original manufacturer or authorized distributors?
All AT45DB041E-SSHN2B-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 AT45DB041E-SSHN2B-T meets industry standards.
7.What is the process for return or replacement of AT45DB041E-SSHN2B-T?
All AT45DB041E-SSHN2B-T units undergo pre-shipment inspection (PSI). If there is an issue with AT45DB041E-SSHN2B-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 AT45DB041E-SSHN2B-T part is unused and in its original packaging.
Return procedure for AT45DB041E-SSHN2B-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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