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Renesas AT45DB081E-SSHNHC-T
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- Part No.:
- AT45DB081E-SSHNHC-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AT45DB081E-SSHNHC-T.pdf
- Description:
- IC FLASH 8MBIT SPI 85MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:14,758
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Product details
Overview
AT45DB081E-SSHNHC-T from Renesas Electronics is an 8-Mbit serial DataFlash memory with dual 256/264-byte SRAM buffers, SPI interface (modes 0 and 3), 1.7–3.6 V single-supply operation, and RapidS™ high-speed read capability up to 85 MHz. It supports continuous array read, page/block/sector/chip erase, and program/erase suspend/resume - enabling real-time firmware updates in embedded controllers and voice recorders.
For engineers reviewing the AT45DB081E-SSHNHC-T datasheet, AT45DB081E-SSHNHC-T pinout, AT45DB081E-SSHNHC-T application, or AT45DB081E-SSHNHC-T equivalent, key selection criteria include buffer-interleaved write throughput, ultra-deep power-down current (400 nA), OTP security register configuration, and SOIC-8 (0.208" wide) package compatibility with legacy PCB footprints.
Technical Context
The AT45DB081E-SSHNHC-T implements a sequential-access Flash architecture with two independent SRAM buffers that enable concurrent data reception and main memory reprogramming. Its RapidS™ mode uses optimized command sequences (e.g., 0Bh/01h opcodes) to achieve 6 ns clock-to-output timing at up to 85 MHz.
Memory organization is configurable: 4,096 pages × 256 bytes (factory-set binary mode) or 264 bytes (default DataFlash mode). Erase granularity spans page (256/264 B), block (2 kB), sector (64 kB), and full chip (8 Mbits), with hardware/software sector protection and permanent lockdown via dedicated registers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory capacity | 8,650,752 bits (8 Mbits + 256 kbits extra) organized as 4,096 pages of 256 or 264 bytes - enables flexible firmware partitioning and E2PROM emulation. |
| Interface & speed | SPI-compatible (modes 0/3); up to 85 MHz RapidS™ read; 6 ns tV max - supports high-throughput streaming in audio playback and boot code loading. |
| Power supply | Single 1.7 V to 3.6 V supply - eliminates level-shifting circuitry in 1.8 V/2.5 V/3.3 V microcontroller systems. |
| Low-power states | 400 nA ultra-deep power-down (typical); 4.5 µA deep power-down (typical); 25 µA standby (typical) - extends battery life in portable medical and IoT edge devices. |
| Endurance & retention | 100,000 program/erase cycles per page minimum; 20 years data retention - suitable for field-upgradable industrial control firmware storage. |
| Security features | 128-byte OTP security register (64 B factory UID + 64 B user-programmable); sector lockdown; individual sector protection - meets secure boot and anti-cloning requirements. |
| Operating temperature | −40°C to +85°C industrial range - validated for use in automotive infotainment head units and factory automation HMIs. |
Pinout & Package
AT45DB081E-SSHNHC-T is supplied in an 8-lead SOIC package (0.208" wide, JEDEC MS-012AC), with pins arranged in standard dual-inline configuration. The package is RoHS-compliant, halide-free, and Pb-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; high-to-low transition initiates command sequence; low-to-high terminates operation and places SO in high-Z state. |
| SCK | Serial Clock | Input clock synchronizing all SPI transfers; supports modes 0 (CPOL=0, CPHA=0) and 3 (CPOL=1, CPHA=1). |
| SI | Serial Input | Data input for commands, addresses, and write data; latched on SCK rising/falling edge per SPI mode. |
| SO | Serial Output | Data output for read operations and status registers; tri-stated when CS is high. |
| WP | Write Protect | Hardware sector protection enable; low = protection active; used with sector protection register for selective lockdown. |
| RESET | Reset Input | Active-low hardware reset; forces device into known state without power cycle; compatible with system-level watchdog recovery. |
| VCC | Power Supply | 1.7–3.6 V core supply; powers logic, memory array, and I/O buffers; decoupling required per datasheet layout guidelines. |
| GND | Ground | Reference return path for VCC and all signal lines; must be low-impedance connection to minimize noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Dual SRAM buffers (256/264 B each) | Enables simultaneous data reception into one buffer while reprogramming main memory from the other - critical for uninterrupted audio/video streaming. |
| RapidS™ high-speed read | Supports 85 MHz clock rate with 0Bh/1Bh opcodes and 6 ns tV - reduces boot time by >40% vs. legacy SPI Flash in MCU-based edge nodes. |
| Configurable page size | Factory-set 256-byte binary mode or default 264-byte DataFlash mode - simplifies migration from legacy AT45DBxxD parts without firmware changes. |
| Program/erase suspend/resume | Allows interrupting long erase/write operations to service high-priority reads - essential for real-time HMI responsiveness during firmware update. |
| OTP Security Register | 128-byte register with 64-byte factory UID and 64-byte user space - enables secure key storage and device identity binding for TLS certificate provisioning. |
| Ultra-deep power-down (400 nA) | Minimizes quiescent current during extended sleep in battery-powered sensors - extends 10-year coin-cell lifetime by >3× vs. standard SPI Flash. |
Applications
| Firmware Storage in Industrial PLCs | Secure Boot in Medical Devices |
|---|---|
Use Scenario: Storing programmable logic controller firmware updated over CAN or Ethernet. IC Role / Device Role / Timing Role: Non-volatile storage for executable code and configuration tables; accessed sequentially during cold boot and hot reload. Use Value: Page erase (256/264 B) and suspend/resume allow partial firmware patching without halting I/O scanning - maintaining <100 µs deterministic response. |
Use Scenario: Storing signed bootloader images and cryptographic keys in FDA-cleared diagnostic equipment. IC Role / Device Role / Timing Role: Secure code and credential repository; accessed only during verified boot sequence with hardware WP pin assertion. Use Value: Sector lockdown and OTP register prevent runtime tampering - meeting IEC 62304 software safety class C requirements. |
| Voice Recording in Smart Home Hubs | Audio Playback in Automotive Infotainment |
Use Scenario: Capturing and storing voice commands in always-on smart speakers with local wake-word detection. IC Role / Device Role / Timing Role: High-bandwidth sequential write buffer for PCM audio streams; interleaved buffer writes avoid dropouts during flash reprogramming. Use Value: Dual-buffer architecture sustains 192 kbps mono recording continuously - eliminating gaps during background garbage collection. |
Use Scenario: Streaming compressed audio (MP3/AAC) from NAND-based file system to DSP in head unit. IC Role / Device Role / Timing Role: Low-latency read cache for frequently accessed UI assets and audio metadata; RapidS™ mode ensures <5 ms seek time. Use Value: 85 MHz read speed and 6 ns tV reduce audio buffer underrun risk - supporting gapless playback across 100+ track playlists. |
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 W25Q80DVSSIG | 8 Mbit SPI NOR Flash; no SRAM buffers; 104 MHz max clock; no RapidS™ or suspend/resume; 100k endurance same. | Lacks dual-buffer streaming and program/erase suspend - unsuitable for real-time audio capture or firmware patching. | Select when cost sensitivity outweighs streaming performance and advanced erase control; verify 3.3 V-only operation. |
| Microchip SST26VF064B-104I/MF | 64 Mbit SuperFlash; 104 MHz DTR; no SRAM buffers; quad-SPI support; 100k endurance; 20-year retention. | Higher density but no sequential-access optimization or buffer interleaving - increases firmware complexity for streaming use cases. | Choose for larger code storage where quad-SPI bandwidth suffices and buffer-assisted writes are unnecessary. |
Compared with W25Q80DVSSIG and SST26VF064B-104I/MF, the AT45DB081E-SSHNHC-T uniquely delivers concurrent buffer write + main memory reprogram capability and hardware-suspendable erase - making it the only option for deterministic real-time streaming in resource-constrained MCUs.
Availability
AT45DB081E-SSHNHC-T is available at Aetrix Electronics and suitable for industrial PLC firmware storage, medical device secure boot, smart home voice recording, automotive infotainment audio caching, and battery-powered sensor node logging requiring stable component supply and long-term lifecycle assurance.
Supply support for AT45DB081E-SSHNHC-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 specializing in microcontrollers, analog, power, and memory solutions for automotive, industrial, and IoT markets.
The AT45DB081E-SSHNHC-T belongs to Renesas' DataFlash® family, designed specifically for high-reliability sequential-access storage in systems demanding low pin count, ultra-low power, and real-time programmability without external high-voltage circuitry.
FAQ
What is the default page size configuration for the AT45DB081E-SSHNHC-T?
The AT45DB081E-SSHNHC-T ships with 264-byte DataFlash page size as default, but can be factory-configured for 256-byte binary mode. This setting determines addressing format and command compatibility - users must select matching opcodes (e.g., D2h for 264-B page read) and validate buffer transfer behavior per DS-AT45DB081E-028 Section 12.
Does the AT45DB081E-SSHNHC-T support true byte-level programming like EEPROM?
No, the AT45DB081E-SSHNHC-T does not support direct byte-level writes. However, it enables E2PROM emulation via a self-contained three-step read-modify-write operation using its SRAM buffers - allowing bit/byte alteration without external RAM or complex host firmware.
How does the RapidS™ mode improve performance over standard SPI read commands?
RapidS™ mode (opcodes 0Bh, 1Bh, 01h) reduces instruction overhead and optimizes internal timing, enabling up to 85 MHz operation with 6 ns clock-to-output delay. Standard legacy commands (e.g., E8h) are limited to lower frequencies and higher latency - confirmed in DS-AT45DB081E-028 Figures 41–43 and Table 27.
Can the AT45DB081E-SSHNHC-T be used in a 1.8 V system without level shifters?
Yes, the AT45DB081E-SSHNHC-T operates across 1.7 V to 3.6 V, making it fully compatible with 1.8 V logic families. All DC and AC specifications - including setup/hold times and output drive strength - are guaranteed down to 1.7 V, per DS-AT45DB081E-028 Section 19.2.
What is the function of the RESET pin on the AT45DB081E-SSHNHC-T?
The RESET pin provides hardware-initiated device reset: asserting it low forces the AT45DB081E-SSHNHC-T into a known initial state, clearing internal command registers and terminating any ongoing operation. It is electrically compatible with standard microcontroller reset outputs and supports watchdog-triggered recovery without power cycling.
AT45DB081E-SSHNHC-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:
- 256 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-SSHNHC-T FAQ
1.How can I place an order for AT45DB081E-SSHNHC-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DB081E-SSHNHC-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-SSHNHC-T reliable?
The price and inventory of AT45DB081E-SSHNHC-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-SSHNHC-T is usually 5 days.
3.What payment methods are accepted for AT45DB081E-SSHNHC-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DB081E-SSHNHC-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DB081E-SSHNHC-T?
AT45DB081E-SSHNHC-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DB081E-SSHNHC-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-SSHNHC-T?
For technical support, including AT45DB081E-SSHNHC-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DB081E-SSHNHC-T requirements.
6.How does Aetrix verify that AT45DB081E-SSHNHC-T is sourced from the original manufacturer or authorized distributors?
All AT45DB081E-SSHNHC-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-SSHNHC-T meets industry standards.
7.What is the process for return or replacement of AT45DB081E-SSHNHC-T?
All AT45DB081E-SSHNHC-T units undergo pre-shipment inspection (PSI). If there is an issue with AT45DB081E-SSHNHC-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-SSHNHC-T part is unused and in its original packaging.
Return procedure for AT45DB081E-SSHNHC-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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