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Renesas AT45DB041E-SHNHA-T
- Part No.:
- AT45DB041E-SHNHA-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
AT45DB041E-SHNHA-T.pdf
- Description:
- IC FLASH 4MBIT SPI 85MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,152
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Product details
Overview
AT45DB041E-SHNHA-T 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 - deployed in embedded firmware storage, voice/image buffering, and industrial data logging systems.
For engineers reviewing the AT45DB041E-SHNHA-T datasheet, AT45DB041E-SHNHA-T pinout, AT45DB041E-SHNHA-T application, or AT45DB041E-SHNHA-T equivalent, key selection criteria include SPI timing compliance (tV ≤ 6 ns), buffer-interleaved write capability, OTP security register (128 bytes), industrial temperature support (–40 °C to +125 °C), and green SOIC/UDFN packaging options.
Technical Context
The AT45DB041E-SHNHA-T implements a sequential-access Flash architecture with two independent SRAM buffers enabling concurrent read-to-buffer and program-from-buffer operations. Its RapidS™ mode delivers accelerated continuous array reads using opcodes 0Bh and 1Bh, while legacy and low-power read modes (01h, 03h, E8h) support system-level power management.
Memory organization comprises 2,048 pages of 256 or 264 bytes (factory-configurable), with page size directly impacting command addressing sequences and buffer transfer efficiency. Sector protection is enforced via dedicated registers and hardware WP pin control, supporting permanent lockdown of individual 64-kB sectors using the 128-byte Security Register.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Capacity | 4 Mbits (2,048 × 256/264-byte pages) - enables compact firmware image storage without parallel bus overhead |
| Supply Voltage | 1.65 V – 3.6 V single supply - compatible with battery-powered and low-voltage microcontroller I/O domains |
| Max Clock Frequency | 85 MHz (RapidS™ mode) - reduces serial transaction time for large data transfers in real-time systems |
| Read Latency | tV ≤ 6 ns clock-to-output - ensures deterministic timing for time-critical SPI polling or DMA-triggered reads |
| Power Consumption | 400 nA Ultra-Deep Power-Down current (typical) - extends battery life in always-on sensor nodes during idle periods |
| Endurance & Retention | 100,000 P/E cycles (–40 °C to +85 °C); 20-year data retention - suitable for field-upgradable industrial controllers |
| Operating Temperature | –40 °C to +125 °C - validated for under-hood automotive modules and industrial motor drives |
Pinout & Package
AT45DB041E-SHNHA-T is packaged in an 8-pad Ultra-thin DFN (5 × 6 × 0.6 mm) with exposed thermal pad (NC or GND). Pin functions are fully SPI-compliant and optimized for minimal PCB footprint and noise immunity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; places SO in high-Z when deasserted - allows multi-device SPI bus sharing |
| SCK | Serial Clock | Input clock synchronizing all SPI transactions; supports up to 85 MHz in RapidS™ mode |
| SI | Serial Input | MOSI line for command/address/data input; latched on SCK rising edge (mode 0) or falling edge (mode 3) |
| SO | Serial Output | MISO line for data output; valid within 6 ns of SCK edge - critical for high-speed timing closure |
| WP | Write Protect | Hardware sector lock control; active-low assertion disables program/erase in protected sectors |
| RESET | Hardware Reset | Active-low asynchronous reset - restores device to known state without power cycle |
| VCC | Power Supply | 1.65–3.6 V input; powers core logic, Flash array, and SRAM buffers |
| GND | Ground | Reference return path; bottom thermal pad may be connected to GND for improved thermal performance |
Key Features
| Feature | Design Value |
|---|---|
| Dual SRAM Buffers (256/264 bytes each) | Enables true interleaved writes: receive new data into one buffer while reprogramming main memory from the other - eliminates write stalls in streaming applications |
| RapidS™ High-Speed Read Mode | Supports 85 MHz continuous array reads via opcodes 0Bh/1Bh - cuts firmware load time by >3× vs. standard SPI Flash at same clock rate |
| User-Configurable Page Size | Factory-set to 264 bytes (default) or 256 bytes - determines address bit allocation and impacts buffer-to-page transfer efficiency |
| 128-Byte OTP Security Register | Contains 64-byte factory-unique ID + 64-byte user-programmable space - enables secure boot key binding and device authentication |
| Program/Erase Suspend & Resume | Allows interrupting long erase cycles to service urgent read requests - essential for real-time systems with mixed latency requirements |
| Individual Sector Lockdown | Makes any 64-kB sector permanently read-only after freeze command - prevents accidental or malicious firmware corruption |
Applications
| Firmware Storage | Voice/Image Buffering |
|---|---|
Use Scenario: Storing boot code and application firmware for ARM Cortex-M microcontrollers in medical diagnostic equipment. IC Role / Device Role / Timing Role: Nonvolatile program memory accessed during cold start and OTA updates via SPI host controller. Use Value: 100,000 P/E cycles and 20-year retention ensure reliable field upgrades over 10+ year product lifecycle. |
Use Scenario: Capturing and buffering ultrasound waveform data in portable imaging devices before compression and transmission. IC Role / Device Role / Timing Role: High-throughput sequential data sink using RapidS™ mode and dual-buffer interleaving. Use Value: 85 MHz read speed and 6 ns tV enable real-time capture of 12-bit ADC streams at ≥2 MSPS without CPU intervention. |
| Industrial Data Logging | Secure Boot Configuration |
Use Scenario: Recording sensor telemetry (temperature, pressure, vibration) in oil & gas downhole tools operating at 125 °C. IC Role / Device Role / Timing Role: Ruggedized nonvolatile storage with sector protection against firmware overwrite during brownout events. Use Value: Full industrial temp range (–40 °C to +125 °C) and hardware WP pin ensure data integrity in extreme environments. |
Use Scenario: Storing cryptographic keys and boot policy flags in automotive ADAS ECUs requiring ASIL-B compliance. IC Role / Device Role / Timing Role: Secure configuration vault leveraging OTP Security Register and permanent sector lockdown. Use Value: 128-byte OTP space with factory-unique ID enables hardware-rooted device identity and tamper-resistant key storage. |
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 Quad SPI (QSPI) interface; no dual SRAM buffers; lacks RapidS™ and sector lockdown | Better suited for high-speed instruction XIP; not optimal for streaming write buffering or secure sector locking | Select if QSPI bus bandwidth >85 MHz is required and buffer interleaving is unnecessary |
| Macronix MX25L4006EM | 4-Mbit standard SPI; 100 µA standby current (vs. 25 µA); no OTP register or Ultra-Deep Power-Down | Lacks ultra-low-power sleep modes and hardware security features needed for battery-constrained or safety-critical use | Select for cost-sensitive consumer applications where deep power-down and security are not required |
Compared with W25Q40EW and MX25L4006EM, the AT45DB041E-SHNHA-T uniquely combines dual-buffer streaming, 400 nA Ultra-Deep Power-Down, and permanent sector lockdown - making it the only option among the three for secure, low-power, real-time data acquisition systems.
Availability
AT45DB041E-SHNHA-T is available at Aetrix Electronics and suitable for firmware storage, voice/image buffering, and industrial data logging requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AT45DB041E-SHNHA-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 markets.
The AT45DB041E belongs to Renesas' DataFlash® family, designed specifically for systems needing high-reliability, low-pin-count, sequential-access Flash with integrated SRAM buffers and advanced security features.
FAQ
What is the default page size configuration for the AT45DB041E-SHNHA-T?
The AT45DB041E-SHNHA-T ships with a default page size of 264 bytes, though it can be factory-configured for 256 bytes. This setting affects command addressing and buffer-to-main-memory transfer behavior - confirmed in Table 33 and Section 12 of the DS-AT45DB041E-8783 datasheet. The AT45DB041E-SHNHA-T supports both configurations without hardware change.
Does the AT45DB041E-SHNHA-T support true SPI mode 3 (CPOL=1, CPHA=0)?
Yes, the AT45DB041E-SHNHA-T explicitly supports SPI modes 0 and 3 per its datasheet Features section. In mode 3, data is sampled on the falling edge of SCK and shifted out on the rising edge - verified in Figure 28 (Waveform 2) and AC Characteristics Table 38. This ensures interoperability with microcontrollers requiring inverted clock polarity.
How does the dual-buffer architecture improve write throughput in the AT45DB041E-SHNHA-T?
The AT45DB041E-SHNHA-T's two independent 256/264-byte SRAM buffers allow simultaneous operations: one buffer receives incoming data via SI while the other transfers data to main memory. This eliminates write latency gaps, enabling sustained streaming writes - a capability confirmed in the Description (Page 6) and Figure 2 (Block Diagram).
Can the AT45DB041E-SHNHA-T be used in automotive applications requiring AEC-Q200 qualification?
The AT45DB041E-SHNHA-T is rated for –40 °C to +125 °C operation and meets industrial reliability standards, but it is not AEC-Q200 qualified. For automotive applications requiring formal qualification, Renesas offers AEC-Q200 variants under different part numbering (e.g., AT45DB041E-MAHN-T). The AT45DB041E-SHNHA-T itself is intended for industrial and commercial use.
What is the purpose of the 128-byte Security Register in the AT45DB041E-SHNHA-T?
The 128-byte Security Register in the AT45DB041E-SHNHA-T contains 64 bytes of factory-programmed unique identifier and 64 bytes user-programmable space. It supports secure boot, device authentication, and cryptographic key storage - detailed in Section 9 and Table 19 of the datasheet. This register is one-time programmable and cannot be erased once written.
AT45DB041E-SHNHA-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:
- 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 ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT45DB041E-SHNHA-T FAQ
1.How can I place an order for AT45DB041E-SHNHA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DB041E-SHNHA-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-SHNHA-T reliable?
The price and inventory of AT45DB041E-SHNHA-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-SHNHA-T is usually 5 days.
3.What payment methods are accepted for AT45DB041E-SHNHA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DB041E-SHNHA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DB041E-SHNHA-T?
AT45DB041E-SHNHA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DB041E-SHNHA-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-SHNHA-T?
For technical support, including AT45DB041E-SHNHA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DB041E-SHNHA-T requirements.
6.How does Aetrix verify that AT45DB041E-SHNHA-T is sourced from the original manufacturer or authorized distributors?
All AT45DB041E-SHNHA-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-SHNHA-T meets industry standards.
7.What is the process for return or replacement of AT45DB041E-SHNHA-T?
All AT45DB041E-SHNHA-T units undergo pre-shipment inspection (PSI). If there is an issue with AT45DB041E-SHNHA-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-SHNHA-T part is unused and in its original packaging.
Return procedure for AT45DB041E-SHNHA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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