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Renesas AT45DB041E-SSHN-T
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- Part No.:
- AT45DB041E-SSHN-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT45DB041E-SSHN-T.pdf
- Description:
- IC FLASH 4MBIT SPI 85MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:36,943
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Product details
Overview
AT45DB041E-SSHN-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 400 nA deep power-down current. It supports byte/page programming, flexible erase options (page/block/sector/chip), and hardware/software sector protection - used in embedded firmware storage, voice recording systems, and industrial data loggers requiring nonvolatile sequential access.
For engineers reviewing the AT45DB041E-SSHN-T datasheet, AT45DB041E-SSHN-T pinout, AT45DB041E-SSHN-T application, or AT45DB041E-SSHN-T equivalent, key selection criteria include SPI timing compliance (tV ≤ 6 ns), dual-buffer interleaved write capability, factory-configurable 256-byte page mode, OTP security register, and industrial temperature support (–40 °C to +85 °C).
Technical Context
The AT45DB041E-SSHN-T implements a serial Flash architecture with separate main memory array (2,048 × 256/264 bytes) and dual SRAM buffers enabling concurrent read/write operations. Its command set includes dedicated buffer-to-main-memory program, page erase, and auto page rewrite functions - all self-timed without external voltage pumps.
It uses standard SPI signaling with optional RapidS™ mode for accelerated continuous reads, supports JEDEC-standard manufacturer/device ID reads, and integrates hardware-controlled sector lockdown via dedicated WP pin and software-configurable protection registers - delivering deterministic timing and robust data integrity in resource-constrained systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory capacity | 4,194,304 bits (4 Mbit) organized as 2,048 pages of 256 or 264 bytes - enables compact firmware image storage with configurable page alignment. |
| Supply voltage | 1.65 V to 3.6 V single supply - compatible with modern low-voltage microcontrollers and battery-powered designs. |
| Max clock frequency | 85 MHz (RapidS™ mode) - supports high-throughput streaming applications such as audio buffering or real-time logging. |
| Read latency | 6 ns clock-to-output (tV) - ensures minimal wait states during instruction fetch or rapid data retrieval. |
| Power-down current | 400 nA typical ultra-deep power-down - extends battery life in always-on sensor nodes or portable devices. |
| Endurance & retention | 100,000 program/erase cycles and 20-year data retention at –40 °C to +85 °C - suitable for long-life industrial deployments. |
| Operating temperature | –40 °C to +85 °C industrial grade - validated for use in automotive control modules and factory automation equipment. |
Pinout & Package
AT45DB041E-SSHN-T is packaged in an 8-lead SOIC (208-mil wide), with lead finish Pb/Halide-free and RoHS-compliant construction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; deassertion places SO in high-impedance state and enters standby mode (not deep power-down). |
| SCK | Serial Clock | Input clock synchronizing all SPI transfers; supports modes 0 and 3 with tV ≤ 6 ns output timing. |
| SI | Serial Input | Data input line for commands, addresses, and write data; sampled on SCK rising edge in mode 0. |
| SO | Serial Output | Data output line for read operations and status registers; tri-stated when CS is high. |
| WP | Write Protect | Hardware sector protection control; low = enable protection, high = disable - used with sector lockdown register. |
| RESET | Reset Input | Active-low hardware reset; initiates internal reset sequence and clears status flags without power cycle. |
| VCC | Power Supply | 1.65–3.6 V supply input; powers core logic, memory array, and I/O buffers. |
| GND | Ground | Reference return path for VCC and all I/O signals; must be low-impedance for stable SPI timing. |
Key Features
| Feature | Design Value |
|---|---|
| Dual SRAM buffers (256/264 bytes each) | Enables simultaneous data reception into one buffer while reprogramming main memory from the other - eliminates write stalls in continuous data streams. |
| RapidS™ high-speed read mode | Supports 85 MHz continuous array reads using opcodes 0Bh/1Bh - doubles throughput vs. legacy E8h command at same clock rate. |
| User-configurable page size | Factory-set to 264 bytes by default; can be reconfigured to 256 bytes for alignment with standard sector boundaries or legacy system compatibility. |
| 128-byte OTP Security Register | Contains 64-byte factory-unique ID + 64-byte user-programmable space - supports secure boot key storage and device authentication. |
| Program/Erase suspend/resume | Allows pausing active erase or program operations to service urgent read requests - critical for real-time interrupt-driven firmware. |
| Individual sector lockdown | Per-sector permanent read-only lock via freeze command - prevents accidental or malicious overwrite of bootloader or calibration data. |
Applications
| Firmware Storage | Voice/Data Logging |
|---|---|
Use Scenario: Storing boot code, application firmware, and configuration parameters in microcontroller-based edge devices. IC Role / Device Role / Timing Role: Nonvolatile sequential-access memory providing fast, low-power instruction fetch and parameter updates over SPI. Use Value: Dual-buffer architecture allows background firmware updates without halting system operation; 100K-cycle endurance supports field OTA upgrades. |
Use Scenario: Capturing sensor readings or voice snippets in battery-powered environmental monitors or medical wearables. IC Role / Device Role / Timing Role: High-reliability sequential data sink with ultra-low 400 nA deep power-down current between sampling intervals. Use Value: RapidS™ 85 MHz read speed enables rapid playback or upload; sector lockdown protects calibration logs from corruption. |
| Industrial HMI Panels | Automotive Telematics |
Use Scenario: Storing localized UI assets (icons, fonts, language strings) and runtime event history in factory HMIs. IC Role / Device Role / Timing Role: SPI-connected Flash memory serving as cost-optimized, pin-efficient storage for graphical resources. Use Value: 264-byte default page size aligns with common display buffer widths; industrial temp rating ensures reliability in uncontrolled cabinet environments. |
Use Scenario: Recording CAN bus diagnostics, GPS traces, or driver behavior metrics in vehicle telematics units. IC Role / Device Role / Timing Role: Robust nonvolatile memory supporting cyclic overwrite of rolling logs with guaranteed data retention over 20 years. Use Value: Page/block erase flexibility enables efficient log rotation; hardware WP pin provides fail-safe protection during ignition transients. |
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-T | Predecessor generation with identical pinout but lower max clock (66 MHz), no RapidS™ mode, and no ultra-deep power-down (1 µA vs. 400 nA). | Lacks high-speed streaming capability and extended battery life - suitable only where legacy timing margins apply. | Select only if backward compatibility with older AT45DB041D-based designs is required and 85 MHz performance is unnecessary. |
| W25Q40EWUXIE | 4-Mbit Quad SPI Flash with QPI/DTR support, 104 MHz clock, but no dual SRAM buffers or RapidS™-style continuous-read acceleration. | Higher raw bandwidth but lacks seamless interleaved write capability - requires host-side buffering management. | Choose when quad I/O bandwidth is prioritized over deterministic low-latency sequential writes and hardware-assisted buffering. |
Compared with AT45DB041D-SSHN-T, the AT45DB041E-SSHN-T delivers 29% faster read throughput and 2.5× lower deep power-down current; versus W25Q40EWUXIE, it trades quad interface complexity for simpler SPI control and built-in dual-buffer concurrency - reducing host MCU overhead in streaming applications.
Availability
AT45DB041E-SSHN-T is available at Aetrix Electronics and suitable for firmware storage, voice/data logging, industrial HMI panels, and automotive telematics requiring stable component supply across extended product lifecycles.
Supply support for AT45DB041E-SSHN-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 systems needing reliable, low-pin-count, sequential-access nonvolatile memory with integrated SRAM buffers and advanced data protection features.
FAQ
What is the maximum operating frequency of the AT45DB041E-SSHN-T in RapidS™ mode?
The AT45DB041E-SSHN-T supports up to 85 MHz in RapidS™ high-frequency read mode using opcodes 0Bh or 1Bh. This is confirmed in the AC Characteristics table (Table 38) of the datasheet, where tV (clock-to-output time) is specified at ≤6 ns across the full industrial temperature range. Standard SPI mode operates up to 66 MHz.
Does the AT45DB041E-SSHN-T support true byte-level writes like EEPROM?
No, the AT45DB041E-SSHN-T does not support direct byte-level writes. However, it implements a self-contained read-modify-write operation that emulates EEPROM functionality: the host reads a page into a buffer, modifies desired bytes, then writes the updated buffer back to main memory - all handled via discrete commands without external logic.
How is page size configured on the AT45DB041E-SSHN-T?
The AT45DB041E-SSHN-T ships with 264-byte pages enabled by default. Page size can be permanently configured to 256 bytes using the Buffer and Page Size Configuration command (0x3D), as detailed in Section 12 and Table 22 of the datasheet. This setting persists through power cycles and affects all subsequent program/erase operations.
What protection mechanisms prevent unauthorized writes to the AT45DB041E-SSHN-T?
The AT45DB041E-SSHN-T provides three-tiered write protection: (1) hardware WP pin assertion disables sector protection changes; (2) software sector protection register allows per-sector locking; and (3) sector lockdown register enables permanent, irreversible read-only status for any sector - verified via dedicated 35h/36h read commands.
Can the AT45DB041E-SSHN-T operate across the full industrial temperature range?
Yes, the AT45DB041E-SSHN-T is rated for –40 °C to +85 °C operation, with full DC and AC specifications guaranteed across this range per Tables 35–39. Endurance is specified at 100,000 cycles within this range, and data retention is guaranteed for 20 years under these conditions.
AT45DB041E-SSHN-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:
- 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-SSHN-T FAQ
1.How can I place an order for AT45DB041E-SSHN-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DB041E-SSHN-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-SSHN-T reliable?
The price and inventory of AT45DB041E-SSHN-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-SSHN-T is usually 5 days.
3.What payment methods are accepted for AT45DB041E-SSHN-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DB041E-SSHN-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DB041E-SSHN-T?
AT45DB041E-SSHN-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DB041E-SSHN-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-SSHN-T?
For technical support, including AT45DB041E-SSHN-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DB041E-SSHN-T requirements.
6.How does Aetrix verify that AT45DB041E-SSHN-T is sourced from the original manufacturer or authorized distributors?
All AT45DB041E-SSHN-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-SSHN-T meets industry standards.
7.What is the process for return or replacement of AT45DB041E-SSHN-T?
All AT45DB041E-SSHN-T units undergo pre-shipment inspection (PSI). If there is an issue with AT45DB041E-SSHN-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-SSHN-T part is unused and in its original packaging.
Return procedure for AT45DB041E-SSHN-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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