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Renesas AT45DB081E-SSHNHA-T
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- Part No.:
- AT45DB081E-SSHNHA-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT45DB081E-SSHNHA-T.pdf
- Description:
- IC FLASH 8MBIT SPI 85MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,479
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Product details
Overview
AT45DB081E-SSHNHA-T from Renesas Electronics is an 8-Mbit serial DataFlash memory with 256/264-byte page architecture, SPI interface (modes 0 and 3), RapidS™ high-speed operation up to 85 MHz, and dual 256/264-byte SRAM buffers enabling concurrent read/write. It operates from 1.7 V–3.6 V and supports industrial temperature range (−40°C to +85°C), used in embedded firmware storage, voice/data logging, and boot code retention.
For engineers reviewing the AT45DB081E-SSHNHA-T datasheet, AT45DB081E-SSHNHA-T pinout, AT45DB081E-SSHNHA-T application, or AT45DB081E-SSHNHA-T equivalent, key selection criteria include page size configurability (256 vs. 264 bytes), ultra-deep power-down current (400 nA typ), clock-to-output time (6 ns max), sector lockdown capability, and SOIC-8 (0.208" wide) package compatibility with legacy PCB layouts.
Technical Context
The AT45DB081E-SSHNHA-T implements a sequential-access Flash architecture with two independent SRAM buffers, enabling true interleaved programming-data can be loaded into one buffer while the other is being written to main memory. Its RapidS™ mode delivers 85 MHz operation using optimized SPI timing with reduced setup/hold requirements.
It supports four erase granularities (page/2 kB block/64 kB sector/chip), program/erase suspend/resume, and hardware/software sector protection including permanent lockdown via OTP register. The device uses standard SPI command set with legacy and high-frequency opcodes (e.g., 0Bh for fast continuous read) and integrates JEDEC-compliant Manufacturer/Device ID read (9Fh).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory capacity | 8,650,752 bits (8 Mbit + 256 kbit extra) organized as 4,096 pages of 256 or 264 bytes |
| Interface | SPI-compatible, supports modes 0 and 3; RapidS™ enables 85 MHz max clock frequency |
| Supply voltage | 1.7 V to 3.6 V single supply - eliminates need for charge pumps or auxiliary rails |
| Power consumption | 400 nA ultra-deep power-down current (typ); 11 mA active read current at 20 MHz |
| Timing performance | 6 ns max clock-to-output time (tV); supports low-power read mode at ≤15 MHz |
| Data retention & endurance | 20 years data retention; ≥100,000 program/erase cycles per page |
| Operating temperature | −40°C to +85°C industrial grade - validated across full range without derating |
Pinout & Package
AT45DB081E-SSHNHA-T is packaged in an 8-lead SOIC (0.208" wide, JEDEC MS-012), with exposed pad not internally connected. Pin functions are fully defined per Table 1 of DS-AT45DB081E-028 Rev. N.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; high-to-low transition initiates command sequence; deassertion places device in standby (SO tri-stated) |
| SCK | Serial Clock | Input clock synchronizing all SPI transfers; supports up to 85 MHz in RapidS™ mode |
| SI | Serial Input | MOSI line for command/address/data input; sampled on SCK rising edge (mode 0) or falling edge (mode 3) |
| SO | Serial Output | MISO line for data output; driven only when CS is low; tV ≤ 6 ns ensures tight timing margins |
| WP | Write Protect | Hardware sector protection control; low = protection enabled per Sector Protection Register settings |
| RESET | Hardware Reset | Active-low asynchronous reset; returns device to power-on state without requiring power cycle |
| VCC | Power Supply | 1.7–3.6 V core supply; powers logic, memory array, and I/O buffers |
| GND | Ground | Reference for all signals and internal circuitry; must be low-impedance connection |
Key Features
| Feature | Design Value |
|---|---|
| Dual SRAM buffers | Two independent 256/264-byte buffers allow simultaneous data reception and main memory reprogramming - enables uninterrupted streaming write |
| Configurable page size | User-selectable 256-byte or factory-default 264-byte pages - optimizes density vs. ECC overhead in firmware storage |
| RapidS™ high-speed mode | 85 MHz operation with simplified timing (no tSU/tH constraints on SI/SO) - reduces controller firmware overhead vs. standard SPI |
| Ultra-deep power-down | 400 nA typical current draw - extends battery life in always-on sensor nodes or backup memory applications |
| Sector lockdown | Permanent read-only lock for any sector via OTP register - prevents accidental or malicious overwrite of critical boot code or calibration data |
| Read-modify-write support | Self-contained three-step operation (page read → buffer modify → page program) - enables byte-level E2PROM emulation without external RAM |
Applications
| Firmware Storage | Voice/Data Logging |
|---|---|
Use Scenario: Storing bootloader, FPGA configuration bitstreams, or MCU application firmware in space-constrained IoT edge devices. IC Role / Device Role / Timing Role: Non-volatile sequential storage accessed via SPI during cold boot or field firmware updates. Use Value: Dual-buffer interleaving allows background firmware download while system remains operational; 20-year retention ensures long-term reliability. | Use Scenario: Capturing audio snippets or sensor telemetry in battery-powered environmental monitors. IC Role / Device Role / Timing Role: High-throughput sequential write buffer with low-power deep-sleep states between capture intervals. Use Value: Ultra-deep power-down (400 nA) minimizes quiescent drain; RapidS™ enables fast burst writes during wake-up windows. |
| Industrial HMI Boot Memory | Medical Device Calibration Storage |
Use Scenario: Holding GUI assets and startup code for human-machine interface panels in factory automation systems. IC Role / Device Role / Timing Role: SPI-connected boot memory mapped via external controller; accessed at power-on reset. Use Value: Industrial temp range (−40°C to +85°C) and 100k-cycle endurance ensure reliability across thermal cycling and frequent updates. | Use Scenario: Securing factory-calibrated sensor coefficients and device-specific medical compliance data. IC Role / Device Role / Timing Role: Tamper-resistant non-volatile storage with hardware sector lockdown and OTP security register. Use Value: Sector lockdown makes calibration sectors permanently read-only; 128-byte OTP register stores unique identifiers and user-programmable keys. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| W25Q80DVSSIG | Standard NOR Flash (not DataFlash); no SRAM buffers; 8 MB capacity; quad-SPI capable but no RapidS™ mode | Lacks concurrent read/write; requires external buffering for streaming; higher pin count if using QSPI | Choose for QSPI host compatibility or when NOR execution-in-place (XIP) is required |
| MX25L8006EM1I-12G | NOR Flash with standard SPI; 8 MB; no dual-buffer architecture; 100 µA standby current (vs. 25 µA for AT45DB081E) | No page-size flexibility; no sector lockdown; lower power-down efficiency limits battery use cases | Prefer for cost-sensitive industrial controllers where buffer features are unnecessary |
Compared with W25Q80DVSSIG and MX25L8006EM1I-12G, the AT45DB081E-SSHNHA-T uniquely delivers true interleaved write capability via dual SRAM buffers, configurable page size for ECC optimization, and ultra-low 400 nA deep-sleep current - making it superior for streaming data loggers and battery-backed firmware storage.
Availability
AT45DB081E-SSHNHA-T is available at Aetrix Electronics and suitable for firmware storage, voice/data logging, industrial HMI boot memory, and medical device calibration storage requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AT45DB081E-SSHNHA-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 AT45DB081E belongs to Renesas' DataFlash® family, designed specifically for high-reliability, low-pin-count, sequential-access Flash storage in resource-constrained embedded systems requiring concurrent read/write and ultra-low power operation.
FAQ
What is the default page size configuration for AT45DB081E-SSHNHA-T?
The AT45DB081E-SSHNHA-T ships with factory-configured 264-byte pages as the default setting. However, users may reconfigure it to 256-byte pages via the Buffer and Page Size Configuration command (53h). This flexibility allows optimization for applications requiring tighter ECC alignment or legacy DataFlash compatibility - both configurations are fully supported in the AT45DB081E-SSHNHA-T datasheet.
Does AT45DB081E-SSHNHA-T support hardware write protection?
Yes, AT45DB081E-SSHNHA-T supports hardware write protection via the WP (Write Protect) pin. When WP is driven low, sector protection settings defined in the Sector Protection Register become active, preventing program/erase operations on protected sectors. This complements software-based protection and provides fail-safe enforcement independent of firmware state - critical for safeguarding boot code in AT45DB081E-SSHNHA-T deployments.
How does the RapidS™ mode improve performance over standard SPI in AT45DB081E-SSHNHA-T?
RapidS™ mode in AT45DB081E-SSHNHA-T eliminates strict setup/hold timing requirements on SI and SO relative to SCK, enabling reliable 85 MHz operation without complex board-level signal integrity tuning. Unlike standard SPI, RapidS™ uses dedicated opcodes (e.g., 0Bh) and relaxed timing - reducing controller firmware overhead and allowing faster continuous reads. This is explicitly defined for AT45DB081E-SSHNHA-T in DS-AT45DB081E-028 Rev. N.
Can AT45DB081E-SSHNHA-T emulate EEPROM functionality?
Yes, AT45DB081E-SSHNHA-T supports E2PROM emulation through its built-in read-modify-write command sequence (D8h). This self-contained three-step operation - reading a page into buffer, modifying desired bytes, then programming back - enables byte-level alterations without external RAM. The dual-buffer architecture ensures no system stall, making AT45DB081E-SSHNHA-T suitable for parameter storage in industrial controllers.
What package type is used by AT45DB081E-SSHNHA-T?
AT45DB081E-SSHNHA-T uses an 8-lead SOIC package with 0.208" body width (JEDEC MS-012), designated as "8S2" in Renesas documentation. This package includes a non-connected metal pad on the bottom - intended for thermal relief or mechanical stability, not electrical connection. It is RoHS-compliant, green, and qualified for industrial temperature operation.
AT45DB081E-SSHNHA-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:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 8Mbit
- Memory Organization:
- 264 Bytes x 4096 pages
- Memory Interface:
- SPI
- Clock Frequency:
- 85 MHz
- Write Cycle Time - Word, Page:
- 8µs, 4ms
- Access Time:
- -
- Voltage - Supply:
- 1.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AT45DB081E-SSHNHA-T FAQ
1.How can I place an order for AT45DB081E-SSHNHA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DB081E-SSHNHA-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 AT45DB081E-SSHNHA-T reliable?
The price and inventory of AT45DB081E-SSHNHA-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT45DB081E-SSHNHA-T is usually 5 days.
3.What payment methods are accepted for AT45DB081E-SSHNHA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DB081E-SSHNHA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DB081E-SSHNHA-T?
AT45DB081E-SSHNHA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DB081E-SSHNHA-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 AT45DB081E-SSHNHA-T?
For technical support, including AT45DB081E-SSHNHA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DB081E-SSHNHA-T requirements.
6.How does Aetrix verify that AT45DB081E-SSHNHA-T is sourced from the original manufacturer or authorized distributors?
All AT45DB081E-SSHNHA-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 AT45DB081E-SSHNHA-T meets industry standards.
7.What is the process for return or replacement of AT45DB081E-SSHNHA-T?
All AT45DB081E-SSHNHA-T units undergo pre-shipment inspection (PSI). If there is an issue with AT45DB081E-SSHNHA-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 AT45DB081E-SSHNHA-T part is unused and in its original packaging.
Return procedure for AT45DB081E-SSHNHA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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