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Renesas AT45DB041E-UUN2B-T
- Part No.:
- AT45DB041E-UUN2B-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-UFBGA, WLCSP
- Datasheet:
-
AT45DB041E-UUN2B-T.pdf
- Description:
- IC FLASH 4MBIT SPI 85MHZ 8WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,940
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Product details
Overview
AT45DB041E-UUN2B-T from Renesas Electronics is a 4-Mbit serial DataFlash memory with extra 128 kbits of OTP security register, operating from 1.65 V to 3.6 V, supporting SPI modes 0 and 3 up to 85 MHz, featuring two independent 256/264-byte SRAM buffers and RapidS™ high-speed read capability. It enables continuous data streaming in embedded voice, firmware storage, and image buffering applications.
For engineers reviewing the AT45DB041E-UUN2B-T datasheet, AT45DB041E-UUN2B-T pinout, AT45DB041E-UUN2B-T application, or AT45DB041E-UUN2B-T equivalent, key selection criteria include its dual-buffer interleaved write capability, ultra-deep power-down current (400 nA), factory-configurable 256-byte page size, and sector lockdown for permanent read-only protection in industrial firmware storage systems.
Technical Context
The AT45DB041E-UUN2B-T implements a sequential-access Flash architecture with two independent SRAM buffers that support concurrent buffer write and main memory page program operations. Its RapidS™ mode enables high-frequency continuous array reads using opcodes 0Bh and 1Bh, achieving 6 ns clock-to-output time.
It supports flexible erase granularity-page (256/264 bytes), block (2 kB), sector (64 kB), and chip (4 Mbits)-with suspend/resume functionality. Sector protection is implemented via hardware WP pin control and software-programmable registers, including permanent lockdown of any sector via dedicated command (3Ah) and freeze mechanism.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Capacity | 4,194,304 bits (4 Mbits) main memory + 128 kbits OTP security register |
| Page Size | Factory-configurable 256 bytes or default 264 bytes per page |
| Max Clock Frequency | 85 MHz for RapidS™ high-speed read; 15 MHz for low-power read mode |
| Power-Down Current | 400 nA typical ultra-deep power-down; 3 µA typical deep power-down |
| Endurance & Retention | 100,000 program/erase cycles at –40 °C to +85 °C; 20-year data retention |
| Operating Voltage | 1.65 V to 3.6 V single supply - enables direct interface with 1.8 V and 3.3 V microcontrollers |
| Temperature Range | Industrial grade: –40 °C to +85 °C; extended grade: –40 °C to +125 °C |
Pinout & Package
AT45DB041E-UUN2B-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-standard SOIC-compatible layout adapted for DFN footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; deassertion places device in standby and tri-states SO output |
| SCK | Serial Clock | Input timing reference for all SPI transfers; supports modes 0 and 3 |
| SI | Serial Input | Command/address/data input path; latched on SCK rising edge (mode 0) or falling edge (mode 3) |
| SO | Serial Output | Data output path; driven only when CS is active; 6 ns max tV ensures tight timing margins |
| WP | Write Protect | Hardware sector protection enable; low = lock sectors per configuration register |
| RESET | Hardware Reset | Active-low asynchronous reset; returns device to power-on state without power cycle |
| VCC | Supply Voltage | 1.65–3.6 V single supply; powers core, I/O, and internal charge pump |
| GND | Ground | Reference for all signals and internal circuitry; thermal pad may be connected to GND |
Key Features
| Feature | Design Value |
|---|---|
| Dual SRAM buffers | Two independent 256/264-byte buffers enable simultaneous receive-and-reprogram operation, eliminating write latency in continuous data streams |
| RapidS™ interface | High-speed read mode (opcodes 0Bh/1Bh) delivers up to 85 MHz throughput with 6 ns tV - critical for real-time audio/video buffering |
| Flexible erase hierarchy | Page (256/264 B), block (2 kB), sector (64 kB), and chip (4 Mbits) erase options allow precise wear leveling and firmware update partitioning |
| OTP Security Register | 128-byte register with 64-byte factory-unique ID + 64-byte user-programmable space - enables secure boot key storage and device authentication |
| Sector lockdown | Software-commanded permanent read-only lock (3Ah) with freeze option prevents accidental or malicious reprogramming of protected firmware sectors |
| Ultra-low power states | 400 nA ultra-deep power-down current extends battery life in always-on IoT edge nodes and portable medical devices |
Applications
| Firmware Storage | Audio Buffering |
|---|---|
Use Scenario: Storing boot code and field-upgradable firmware images in industrial PLCs and motor controllers. IC Role / Device Role / Timing Role: Non-volatile program memory with sector lockdown ensuring bootloader integrity and preventing unauthorized modification. Use Value: 100,000-cycle endurance and 20-year retention guarantee long-term reliability; dual-buffer write avoids interrupt latency during over-the-air updates. |
Use Scenario: Real-time voice recording and playback in smart speakers and voice-controlled home appliances. IC Role / Device Role / Timing Role: High-throughput sequential buffer memory interfacing directly with audio DSPs via SPI. Use Value: RapidS™ 85 MHz read speed and 6 ns tV enable glitch-free playback; low-power modes reduce thermal load during idle periods. |
| Image Capture Buffer | Secure Device Identity |
Use Scenario: Temporary frame storage in compact surveillance cameras and drone vision modules before JPEG compression and transmission. IC Role / Device Role / Timing Role: High-bandwidth sequential memory acting as scratchpad between image sensor and processor. Use Value: Interleaved buffer writes sustain >10 MB/s effective throughput; 256-byte page size optimizes burst transfer alignment with sensor pipelines. |
Use Scenario: Storing cryptographic keys and unique device identifiers in medical sensors and industrial gateways requiring regulatory compliance. IC Role / Device Role / Timing Role: Tamper-resistant OTP register providing immutable identity binding for secure boot and attestation. Use Value: Factory-programmed 64-byte UID ensures traceability; user-programmable 64-byte section supports key injection during manufacturing without exposing secrets. |
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-UUN2B-T | Predecessor generation; lacks RapidS™ mode, lower max frequency (66 MHz), no ultra-deep power-down (min 1 µA) | Legacy designs where 85 MHz throughput and sub-µA sleep not required | Select AT45DB041E-UUN2B-T for new designs needing higher speed, lower power, or enhanced security features. |
| W25Q40EWUXIE | Quad SPI interface (QPI), 4-byte addressing, no dual SRAM buffers; 1.7–1.95 V or 2.7–3.6 V dual voltage options | Systems requiring quad I/O bandwidth or compatibility with standard SPI NOR flash ecosystems | Choose W25Q40EWUXIE if QPI protocol integration or broader voltage flexibility outweighs need for buffer interleaving and RapidS™ timing. |
Compared with AT45DB041D-UUN2B-T, the AT45DB041E-UUN2B-T delivers 29% faster read throughput and 75% lower deep-sleep current; versus W25Q40EWUXIE, it offers true sequential access with built-in buffers for streaming but lacks quad I/O and requires different command set and driver adaptation.
Availability
AT45DB041E-UUN2B-T is available at Aetrix Electronics and suitable for firmware storage, audio buffering, image capture, and secure device identity applications requiring stable component supply across industrial temperature ranges and long product lifecycles.
Supply support for AT45DB041E-UUN2B-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 markets, with strong IP in Flash memory, MCUs, and analog power management.
The AT45DB041E-UUN2B-T belongs to Renesas' DataFlash® family, designed specifically for high-reliability, low-pin-count sequential data storage in resource-constrained embedded systems where random-access parallel Flash is impractical.
FAQ
What is the page size configuration of the AT45DB041E-UUN2B-T?
The AT45DB041E-UUN2B-T supports user-configurable page sizes: 256 bytes (factory pre-configured option) or 264 bytes (default). Configuration is performed via the Buffer and Page Size Configuration command (3Dh), and the setting persists across power cycles. This flexibility allows optimization for byte-aligned firmware updates or legacy DataFlash compatibility.
Does the AT45DB041E-UUN2B-T support true SPI mode 3 operation?
Yes, the AT45DB041E-UUN2B-T fully supports SPI mode 3 (CPOL = 1, CPHA = 0), as confirmed in the datasheet Features section and detailed in Figure 28 (Waveform 2). Clock polarity is high when idle, and data is sampled on the first clock edge - enabling interoperability with microcontrollers requiring strict mode 3 timing compliance.
How does the dual-buffer architecture improve write performance in the AT45DB041E-UUN2B-T?
The AT45DB041E-UUN2B-T's two independent 256/264-byte SRAM buffers allow one buffer to accept incoming data via SPI while the other simultaneously programs a full page into main Flash memory. This interleaving eliminates write latency, enabling sustained continuous data streaming - essential for real-time audio, sensor logging, and video buffering applications.
What security mechanisms are implemented in the AT45DB041E-UUN2B-T?
The AT45DB041E-UUN2B-T integrates multiple hardware-enforced security layers: individual sector protection (software/hardware controlled), permanent sector lockdown (3Ah command), and a 128-byte OTP Security Register with 64-byte factory-unique ID and 64-byte user-programmable space. These features collectively prevent unauthorized firmware modification and support secure boot key storage.
Can the AT45DB041E-UUN2B-T operate at 1.8 V supply voltage?
Yes, the AT45DB041E-UUN2B-T operates across 1.65 V to 3.6 V, making 1.8 V a fully supported and commonly used supply voltage. At 1.8 V, it maintains full functionality including RapidS™ mode (up to 66 MHz), all erase/write commands, and ultra-deep power-down (400 nA typical), ensuring compatibility with modern low-voltage microcontrollers and SoCs.
AT45DB041E-UUN2B-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-UFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not 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-WLCSP (2.55x1.45)
AT45DB041E-UUN2B-T FAQ
1.How can I place an order for AT45DB041E-UUN2B-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DB041E-UUN2B-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-UUN2B-T reliable?
The price and inventory of AT45DB041E-UUN2B-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-UUN2B-T is usually 5 days.
3.What payment methods are accepted for AT45DB041E-UUN2B-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DB041E-UUN2B-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DB041E-UUN2B-T?
AT45DB041E-UUN2B-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DB041E-UUN2B-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-UUN2B-T?
For technical support, including AT45DB041E-UUN2B-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DB041E-UUN2B-T requirements.
6.How does Aetrix verify that AT45DB041E-UUN2B-T is sourced from the original manufacturer or authorized distributors?
All AT45DB041E-UUN2B-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-UUN2B-T meets industry standards.
7.What is the process for return or replacement of AT45DB041E-UUN2B-T?
All AT45DB041E-UUN2B-T units undergo pre-shipment inspection (PSI). If there is an issue with AT45DB041E-UUN2B-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-UUN2B-T part is unused and in its original packaging.
Return procedure for AT45DB041E-UUN2B-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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