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Renesas AT45DB041E-SHN-T
- Part No.:
- AT45DB041E-SHN-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
AT45DB041E-SHN-T.pdf
- Description:
- IC FLASH 4MBIT SPI 85MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:28,558
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Product details
Overview
AT45DB041E-SHN-T from Renesas Electronics is a 4-Mbit serial DataFlash memory with two independent 256/264-byte SRAM buffers, SPI interface (modes 0 and 3), RapidS™ high-speed operation up to 85 MHz, and ultra-low deep power-down current of 400 nA. It enables continuous data streaming in embedded voice, firmware storage, and telemetry logging applications.
For engineers reviewing the AT45DB041E-SHN-T datasheet, AT45DB041E-SHN-T pinout, AT45DB041E-SHN-T application, or AT45DB041E-SHN-T equivalent, key selection criteria include page size configurability (256 vs. 264 bytes), buffer-to-memory program with built-in erase, sector lockdown security, and industrial temperature support (–40 °C to +85 °C).
Technical Context
The AT45DB041E-SHN-T implements a dual-buffered sequential-access architecture: main memory (2,048 × 256/264 bytes) plus two independent SRAM buffers. Its RapidS™ mode supports high-frequency read commands (0Bh/1Bh opcodes) with 6 ns clock-to-output timing, enabling real-time streaming without CPU intervention.
It supports full command-level flexibility-buffer write, buffer-to-main-memory program (with or without built-in erase), page/block/sector/chip erase, and suspend/resume during programming or erasing. Hardware and software sector protection, OTP security register (128 bytes), and factory-programmed unique ID (64 bytes) provide robust data integrity for firmware and configuration storage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory capacity | 4 Mbits (512 KB) main array + 128 kbits extra space; organized as 2,048 pages of 256 or 264 bytes |
| Supply voltage | 1.65 V to 3.6 V single supply - enables direct interfacing with low-voltage MCUs without level shifters |
| Max clock frequency | 85 MHz (RapidS™ mode) - supports high-throughput firmware updates and audio streaming |
| Power-down current | 400 nA typical ultra-deep power-down - extends battery life in always-on sensor nodes |
| Endurance & retention | 100,000 program/erase cycles and 20-year data retention at –40 °C to +85 °C |
| Page size | User-configurable: 256 bytes (factory pre-set option) or 264 bytes (default) - affects address alignment and buffer management logic |
| Security features | 128-byte OTP security register (64-byte factory UID + 64-byte user programmable); sector lockdown capability |
Pinout & Package
AT45DB041E-SHN-T is packaged in an 8-pad Ultra-thin DFN (5 × 6 × 0.6 mm) with exposed thermal pad (non-connected). Pin functions are defined per JEDEC-compliant serial flash layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; places SO in high-impedance when deasserted - enables multi-device SPI bus sharing |
| SCK | Serial Clock | Input clock synchronizing all SPI transfers; supports modes 0 and 3 - matches standard MCU SPI peripherals |
| SI | Serial Input | Data input for commands, addresses, and write data - used for all write and configuration operations |
| SO | Serial Output | Data output for read operations and status registers - tri-stated when CS is high |
| WP | Write Protect | Hardware-enabled sector protection control - prevents accidental program/erase when asserted |
| RESET | Hardware Reset | Active-low asynchronous reset - restores device to known state without power cycle |
| VCC | Power Supply | 1.65–3.6 V supply - powers core logic, buffers, and memory array; no external charge pump required |
| GND | Ground | Reference for all I/O and internal circuitry - must be low-impedance for stable high-speed operation |
Key Features
| Feature | Design Value |
|---|---|
| Dual SRAM buffers (256/264 bytes each) | Enables concurrent receive-and-program operation - eliminates write latency bottlenecks in continuous data capture |
| RapidS™ high-speed read mode | Up to 85 MHz clock rate with 6 ns tV - delivers >10 MB/s effective throughput for firmware loading |
| Flexible erase granularity | Page (256/264 B), block (2 kB), sector (64 kB), and chip (4 Mbit) erase - optimizes wear leveling and update efficiency |
| Program/erase suspend/resume | Allows interrupting long erase cycles to service time-critical reads - essential for real-time systems |
| Factory-programmed unique ID | 64-byte immutable identifier in OTP register - enables secure device authentication and traceability |
| Sector lockdown | Per-sector permanent read-only lock - prevents tampering of boot code or calibration data in field-deployed units |
Applications
| Firmware Storage | Telemetry Logging |
|---|---|
Use Scenario: Storing and updating bootloader and application firmware in industrial gateways. IC Role / Device Role / Timing Role: Non-volatile program memory accessed via SPI during boot and OTA updates. Use Value: Page-erase granularity and buffer interleaving reduce update time by >40% versus standard SPI Flash. |
Use Scenario: Capturing sensor readings in battery-powered environmental monitors. IC Role / Device Role / Timing Role: High-reliability sequential data logger with ultra-low standby current. Use Value: 400 nA ultra-deep power-down extends 10-year battery life while preserving stored logs. |
| Voice/Data Recorder | Secure Configuration Storage |
Use Scenario: Recording voice prompts and alarm messages in medical alert devices. IC Role / Device Role / Timing Role: Continuous-read-capable sequential memory supporting real-time playback. Use Value: RapidS™ mode enables glitch-free 48 kHz mono audio streaming directly from flash. |
Use Scenario: Storing calibrated sensor offsets and cryptographic keys in automotive ECUs. IC Role / Device Role / Timing Role: Tamper-resistant configuration vault with sector lockdown and OTP UID. Use Value: Factory-programmed 64-byte UID + user-programmable 64-byte OTP ensures device-specific key binding. |
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-SHN-T | Predecessor generation; lacks RapidS™ mode, max clock 66 MHz, no ultra-deep power-down (1 µA vs. 400 nA) | Lower performance and power efficiency; suitable only where legacy compatibility is required | Select AT45DB041E-SHN-T for new designs requiring higher speed, lower power, or enhanced security features. |
| W25Q40EWBYIG | Quad SPI interface (QPI), 40 MHz max clock, no dual buffers or RapidS™, 1.7–1.95 V supply only | Higher pin count (8-lead SOIC), no SRAM buffer interleaving, incompatible command set and page structure | Choose W25Q40EWBYIG only if Quad SPI bandwidth is mandatory and buffer-assisted streaming is not needed. |
Compared with AT45DB041D-SHN-T and W25Q40EWBYIG, the AT45DB041E-SHN-T uniquely combines dual SRAM buffering, RapidS™ high-speed read, ultra-low 400 nA deep power-down, and factory-programmed UID - making it optimal for battery-constrained, streaming-intensive, and security-aware embedded systems.
Availability
AT45DB041E-SHN-T is available at Aetrix Electronics and suitable for firmware storage, telemetry logging, voice recording, and secure configuration storage requiring stable component supply across industrial temperature ranges and long product lifecycles.
Supply support for AT45DB041E-SHN-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, infrastructure, and IoT applications.
The AT45DB041E-SHN-T belongs to Renesas' DataFlash® family, designed specifically for high-reliability, low-pin-count, sequential-access storage in resource-constrained embedded systems requiring fast streaming and robust data protection.
FAQ
What is the default page size of the AT45DB041E-SHN-T?
The AT45DB041E-SHN-T defaults to 264-byte pages but supports factory pre-configuration for 256-byte pages. This setting determines address mapping and buffer alignment - critical for firmware partitioning and E2PROM emulation logic. The page size is fixed per unit and cannot be changed in-system.
Does the AT45DB041E-SHN-T support true byte-level writes like EEPROM?
No, the AT45DB041E-SHN-T does not support true byte-level writes. However, it enables E2PROM emulation via a self-contained three-step read-modify-write operation using its dual SRAM buffers - allowing bit- or byte-alterability without external RAM or complex host-side algorithms.
How does the RapidS™ mode improve performance over standard SPI reads?
RapidS™ mode on the AT45DB041E-SHN-T uses optimized command opcodes (0Bh/1Bh) and tighter timing to achieve up to 85 MHz clock rates and 6 ns clock-to-output delay. This yields >10 MB/s effective read throughput - more than double standard SPI Flash at 40 MHz - enabling real-time audio/video streaming directly from memory.
Can the AT45DB041E-SHN-T be used in automotive applications?
The AT45DB041E-SHN-T is rated for the industrial temperature range (–40 °C to +85 °C) and meets RoHS compliance, but it is not AEC-Q100 qualified. For automotive applications requiring qualification, consult Renesas' automotive-grade equivalents; for under-hood industrial controls or infotainment peripherals, AT45DB041E-SHN-T may be deployed with system-level validation.
What security mechanisms protect firmware stored in the AT45DB041E-SHN-T?
The AT45DB041E-SHN-T provides hardware sector protection, software-controlled sector lockdown (making sectors permanently read-only), and a 128-byte OTP security register - including 64 bytes factory-programmed with a unique device ID and 64 bytes user-programmable for keys or certificates - ensuring firmware authenticity and anti-tampering.
AT45DB041E-SHN-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 4Mbit
- Memory Organization:
- 264 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-SHN-T FAQ
1.How can I place an order for AT45DB041E-SHN-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DB041E-SHN-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-SHN-T reliable?
The price and inventory of AT45DB041E-SHN-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-SHN-T is usually 5 days.
3.What payment methods are accepted for AT45DB041E-SHN-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DB041E-SHN-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DB041E-SHN-T?
AT45DB041E-SHN-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DB041E-SHN-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-SHN-T?
For technical support, including AT45DB041E-SHN-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DB041E-SHN-T requirements.
6.How does Aetrix verify that AT45DB041E-SHN-T is sourced from the original manufacturer or authorized distributors?
All AT45DB041E-SHN-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-SHN-T meets industry standards.
7.What is the process for return or replacement of AT45DB041E-SHN-T?
All AT45DB041E-SHN-T units undergo pre-shipment inspection (PSI). If there is an issue with AT45DB041E-SHN-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-SHN-T part is unused and in its original packaging.
Return procedure for AT45DB041E-SHN-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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