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Renesas AT45DB041E-SSHNHT-B
- Part No.:
- AT45DB041E-SSHNHT-B
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
AT45DB041E-SSHNHT-B.pdf
- Description:
- IC FLASH 4MBIT SPI 85MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,213
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Product details
Overview
AT45DB041E-SSHNHT-B from Renesas Electronics is a 4-Mbit serial DataFlash memory with dual 256/264-byte SRAM buffers, SPI interface (modes 0 and 3), RapidS™ high-speed operation up to 85 MHz, and ultra-low-power Deep Power-Down (400 nA typical). It supports byte/page programming, flexible erase options (page/block/sector/chip), and hardware/software sector protection - used in embedded firmware storage, voice/image buffering, and E²PROM emulation.
For engineers reviewing the AT45DB041E-SSHNHT-B datasheet, AT45DB041E-SSHNHT-B pinout, AT45DB041E-SSHNHT-B application, or AT45DB041E-SSHNHT-B equivalent, key selection factors include its 1.65 V–3.6 V single-supply operation, continuous array read capability, clock-to-output time of ≤6 ns, user-configurable page size (256 or 264 bytes), and industrial temperature range (−40 °C to +85 °C).
Technical Context
The AT45DB041E-SSHNHT-B implements a sequential-access Flash architecture with two independent SRAM buffers enabling concurrent data reception and main memory reprogramming. Its RapidS™ mode supports high-frequency read commands (0Bh/1Bh opcodes) for throughput-critical applications.
It uses SPI-compatible three-wire communication (CS/SI/SO/SCK), requires no high-voltage programming, and integrates self-timed program/erase cycles. Sector lockdown, OTP security register (128 bytes), and JEDEC-standard ID read provide robust data integrity and system-level security.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory density | 4 Mbits (2,048 × 256/264-byte pages), plus 128 kbits extra capacity for security/OTP use |
| Supply voltage | 1.65 V to 3.6 V - enables direct interfacing with low-voltage microcontrollers without level shifters |
| Max clock frequency | 85 MHz in RapidS™ mode - supports high-throughput streaming read/write in real-time systems |
| Read latency | ≤6 ns clock-to-output (tV) - minimizes wait states in time-critical firmware fetch or audio playback paths |
| Power consumption | 400 nA ultra-deep power-down current - extends battery life in always-on sensor nodes or wearables |
| Endurance & retention | 100,000 program/erase cycles and 20-year data retention at −40 °C to +85 °C - suitable for field-upgradable industrial controllers |
| Operating temperature | −40 °C to +85 °C - certified for full industrial environment deployment without derating |
Pinout & Package
AT45DB041E-SSHNHT-B 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 interface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; places SO in high-impedance when deasserted - allows multi-device SPI bus sharing |
| SCK | Serial Clock | Input timing reference for all SPI transfers; supports modes 0 and 3 polarity/phase configurations |
| SI | Serial Input | Data-in line for commands, addresses, and write data; sampled on SCK rising/falling edge per mode |
| SO | Serial Output | Data-out line for read operations and status registers; tri-stated when CS is high |
| WP | Write Protect | Hardware sector lock control; active-low input that freezes protection register settings when asserted |
| RESET | Hardware Reset | Active-low asynchronous reset; returns device to power-on state without requiring power cycle |
| VCC | Power Supply | Single 1.65–3.6 V supply - powers core logic, Flash array, and SRAM buffers |
| GND | Ground | Reference return path for all digital and analog circuitry; connects to thermal pad in DFN package |
Key Features
| Feature | Design Value |
|---|---|
| Dual SRAM buffers (256/264 bytes each) | Enables true interleaved write: receive new data into one buffer while programming the other into Flash - eliminates write stalls in continuous logging |
| RapidS™ high-speed read mode | Supports 0Bh/1Bh opcodes for >2× faster continuous array reads vs. legacy E8h - critical for real-time audio/video streaming |
| User-configurable page size | Factory-settable 256-byte or default 264-byte pages - optimizes memory utilization for firmware partitioning or file-system alignment |
| Program/Erase suspend/resume | Allows interrupting long erase cycles to service urgent read requests - improves system responsiveness in multitasked embedded OS |
| 128-byte OTP Security Register | Contains 64-byte factory-unique ID + 64-byte user-programmable space - enables secure boot key binding and device authentication |
| Hardware sector lockdown | Makes protected sectors permanently read-only after freeze command - prevents accidental or malicious firmware overwrite in safety-critical systems |
Applications
| Firmware Storage | Voice/Image Buffering |
|---|---|
Use Scenario: Storing boot code, application firmware, and configuration parameters in microcontroller-based IoT edge nodes. IC Role / Device Role / Timing Role: Non-volatile program memory accessed via SPI during cold start and over-the-air updates. Use Value: 100,000 endurance cycles and 20-year retention ensure reliable field upgrades across product lifetime without replacement. |
Use Scenario: Capturing and buffering audio samples or image frames in portable medical sensors or smart cameras. IC Role / Device Role / Timing Role: High-speed sequential storage with dual-buffer interleaving to sustain continuous 85 MHz read/write streams. Use Value: RapidS™ mode and ≤6 ns tV reduce latency in real-time signal processing pipelines. |
| E²PROM Emulation | Industrial Data Logging |
Use Scenario: Replacing discrete EEPROM in PLC modules where byte-alterable non-volatile storage is required for calibration data. IC Role / Device Role / Timing Role: Implements atomic read-modify-write using internal buffers - avoids external controller overhead. Use Value: Eliminates need for external EEPROM, reducing BOM count and PCB area while maintaining bit-level alterability. |
Use Scenario: Recording sensor history, fault logs, and operational timestamps in railway signaling or energy metering equipment. IC Role / Device Role / Timing Role: Sector-protected, low-power Flash memory supporting periodic writes with guaranteed data integrity. Use Value: Hardware sector lockdown and WP pin prevent corruption during brown-out or firmware update failures. |
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-SSHN-B | Previous revision; lacks RapidS™ support, max clock 66 MHz, no ultra-deep power-down (400 nA) | Not suitable for high-throughput streaming or ultra-low-power battery operation | Select AT45DB041E-SSHNHT-B when RapidS™ speed or sub-µA sleep current is required |
| W25Q40EWUXIE | 4 Mbit Quad SPI NOR Flash; 133 MHz QSPI, no SRAM buffers, no RapidS™, different command set | Requires QSPI controller; no built-in E²PROM emulation or buffer interleaving capability | Choose only if system already uses Quad SPI interface and prioritizes raw read bandwidth over sequential write efficiency |
Compared with AT45DB041D-SSHN-B and W25Q40EWUXIE, the AT45DB041E-SSHNHT-B uniquely combines dual-SRAM-buffered sequential access, RapidS™ acceleration, and ultra-low-power Deep Power-Down - making it optimal for continuous-data-logging and firmware-update-constrained embedded systems.
Availability
AT45DB041E-SSHNHT-B is available at Aetrix Electronics and suitable for firmware storage, voice/image buffering, and industrial data logging requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AT45DB041E-SSHNHT-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 global semiconductor leader delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets.
The AT45DB041E-SSHNHT-B belongs to Renesas' DataFlash® family - designed specifically for high-reliability, low-pin-count, sequential-access Flash applications where SPI simplicity, buffer-assisted throughput, and industrial-grade endurance are essential.
FAQ
What is the maximum operating frequency of the AT45DB041E-SSHNHT-B in RapidS™ mode?
The AT45DB041E-SSHNHT-B supports up to 85 MHz in RapidS™ mode using opcodes 0Bh or 1Bh for continuous array reads. This is confirmed in the AC Characteristics table (Table 38) of the official datasheet DS-AT45DB041E-8783 Rev. Q. The 85 MHz rating applies across the full industrial temperature range (−40 °C to +85 °C) and enables high-bandwidth streaming in audio, imaging, and firmware update applications.
Does the AT45DB041E-SSHNHT-B support true byte-level programming like EEPROM?
The AT45DB041E-SSHNHT-B does not support direct byte-level programming, but implements a self-contained read-modify-write operation using its dual SRAM buffers. As described in Section 7.6 of the datasheet, this three-step process (read page → modify buffer → program back) enables effective E²PROM emulation with no host CPU intervention beyond issuing standard commands. This preserves the endurance and reliability benefits of Flash while delivering byte-alterable behavior.
What package type is used for the AT45DB041E-SSHNHT-B variant?
The AT45DB041E-SSHNHT-B uses an 8-pad Ultra-thin DFN package measuring 5 mm × 6 mm × 0.6 mm, as specified in Section 29.3 "8-pad UDFN" of the datasheet. The "H" in the part number denotes the UDFN package, and the "T" indicates tape-and-reel packaging. The bottom thermal pad is not internally connected and may be left floating or tied to GND for mechanical stability.
How does the AT45DB041E-SSHNHT-B handle power-loss during programming or erasing?
The AT45DB041E-SSHNHT-B features automatic program/erase suspend/resume functionality (Section 7.11–7.12). When a power interruption occurs, the device retains partial progress and can safely resume the suspended operation upon recovery - preventing data corruption. Additionally, sector lockdown and hardware write protection (WP pin) provide fail-safe protection against unintended writes during brown-out conditions.
Is the AT45DB041E-SSHNHT-B compatible with standard SPI controllers?
Yes, the AT45DB041E-SSHNHT-B is fully compatible with standard SPI controllers supporting modes 0 and 3 (CPOL=0/1, CPHA=0/1), as explicitly stated in the Features section of the datasheet. It uses a standard three-wire interface (CS/SI/SO/SCK) with no proprietary signaling. Command opcodes align with common SPI Flash conventions, and JEDEC-standard Manufacturer/Device ID (9Fh) ensures plug-and-play detection in most HAL drivers.
AT45DB041E-SSHNHT-B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-SOIC (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not 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 ~ 125°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT45DB041E-SSHNHT-B FAQ
1.How can I place an order for AT45DB041E-SSHNHT-B through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DB041E-SSHNHT-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 AT45DB041E-SSHNHT-B reliable?
The price and inventory of AT45DB041E-SSHNHT-B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT45DB041E-SSHNHT-B is usually 5 days.
3.What payment methods are accepted for AT45DB041E-SSHNHT-B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DB041E-SSHNHT-B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DB041E-SSHNHT-B?
AT45DB041E-SSHNHT-B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DB041E-SSHNHT-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 AT45DB041E-SSHNHT-B?
For technical support, including AT45DB041E-SSHNHT-B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DB041E-SSHNHT-B requirements.
6.How does Aetrix verify that AT45DB041E-SSHNHT-B is sourced from the original manufacturer or authorized distributors?
All AT45DB041E-SSHNHT-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 AT45DB041E-SSHNHT-B meets industry standards.
7.What is the process for return or replacement of AT45DB041E-SSHNHT-B?
All AT45DB041E-SSHNHT-B units undergo pre-shipment inspection (PSI). If there is an issue with AT45DB041E-SSHNHT-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 AT45DB041E-SSHNHT-B part is unused and in its original packaging.
Return procedure for AT45DB041E-SSHNHT-B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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