My Inquiry
My Account
Renesas AT45DB081E-SHNHA-T
- Part No.:
- AT45DB081E-SHNHA-T
- Manufacturer:
- Renesas
- Category:
- Memory
- Package:
- 8-SOIC (0.209", 5.30mm Width)
- Datasheet:
-
AT45DB081E-SHNHA-T.pdf
- Description:
- IC FLASH 8MBIT SPI 85MHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,664
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AT45DB081E-SHNHA-T from Renesas Electronics is an 8-Mbit serial DataFlash memory with extra 256 kbits, supporting SPI modes 0 and 3 at up to 85 MHz, featuring two independent 256/264-byte SRAM buffers, 100,000 program/erase cycles per page, and ultra-deep power-down current of 400 nA (typical). It enables continuous data streaming in voice recording, firmware storage, and embedded boot code applications.
For engineers reviewing the AT45DB081E-SHNHA-T datasheet, AT45DB081E-SHNHA-T pinout, AT45DB081E-SHNHA-T application, or AT45DB081E-SHNHA-T equivalent, key selection considerations include buffer-assisted interleaved write capability, RapidS™ high-speed read mode, factory-configurable 256-byte vs. 264-byte page size, sector lockdown security, and industrial temperature operation (–40°C to +85°C).
Technical Context
The AT45DB081E-SHNHA-T implements a dual-buffered sequential-access architecture: main memory (4,096 × 256/264 bytes) plus two independent SRAM buffers, enabling concurrent receive-and-reprogram operation. Its SPI interface supports legacy and RapidS™ command sets for optimized throughput across frequency bands.
It integrates hardware- and software-controlled protection including individual sector lock/unlock, permanent sector lockdown, and a 128-byte OTP security register with 64-byte factory-unique ID. All erase/program operations are self-timed with suspend/resume capability and operate within a single 1.7 V–3.6 V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory capacity | 8,650,752 bits (8 Mbit main + 256 kbit extra), organized as 4,096 pages of 256 or 264 bytes - enables flexible firmware partitioning and E2PROM emulation via read-modify-write. |
| Max clock frequency | 85 MHz (RapidS™ mode) - delivers high-throughput sequential reads for real-time audio/video buffering without parallel bus overhead. |
| Page erase endurance | 100,000 cycles minimum per page - ensures long-term reliability in field-upgradable embedded systems with frequent OTA updates. |
| Power-down current | 400 nA typical (ultra-deep power-down) - extends battery life in always-on sensor nodes and portable medical devices. |
| Data retention | 20 years - guarantees nonvolatile storage integrity over full product lifecycle in industrial control and automotive telematics. |
| Operating voltage | 1.7 V to 3.6 V single supply - simplifies power design in mixed-voltage systems and eliminates level-shifting for 1.8 V/3.3 V MCUs. |
| Temperature range | –40°C to +85°C - qualified for deployment in uncontrolled industrial environments and automotive under-hood modules. |
Pinout & Package
AT45DB081E-SHNHA-T uses an 8-lead SOIC package (0.208" wide), JEDEC standard footprint compatible with automated assembly. Pin functions are defined per Table 1 of DS-AT45DB081E-028 Rev. N.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable signal; 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 and 3 with tV ≤ 6 ns clock-to-output timing for deterministic timing margins. |
| SI | Serial Input | Command/address/data input line; accepts opcode, address, and payload during write/buffer operations with no external pull-up required. |
| SO | Serial Output | Tri-state output delivering read data, status, or ID; driven only when CS is asserted and remains high-Z otherwise. |
| WP | Write Protect | Hardware sector protection control; low = protection enabled, high = protection disabled - used with sector lockdown register for immutable firmware regions. |
| RESET | Reset Input | Active-low asynchronous reset; forces device into known state and clears internal status flags without power cycle. |
| VCC | Power Supply | Single 1.7–3.6 V supply powering core logic, memory array, and I/O - eliminates need for auxiliary voltage rails. |
| GND | Ground | Reference return path for VCC and all I/O signals; must be low-impedance connection to minimize noise coupling in high-speed SPI operation. |
Key Features
| Feature | Design Value |
|---|---|
| Dual SRAM buffers (256/264 bytes each) | Enables true pipelined writes: while one buffer receives new data, the other transfers content to main memory - critical for uninterrupted audio capture or telemetry logging. |
| RapidS™ high-speed read mode | Supports 85 MHz clock with 0Bh/1Bh opcodes - achieves >10 MB/s sustained sequential read rate, outperforming standard SPI Flash in throughput-critical boot loaders. |
| User-configurable page size | Factory-settable 256-byte or 264-byte pages - allows alignment with MCU cache lines or filesystem block sizes to reduce fragmentation and improve wear leveling efficiency. |
| Program/erase suspend/resume | Permits interruption of background erase/write to service urgent read requests - essential for real-time systems requiring guaranteed latency response. |
| 128-byte OTP Security Register | Contains 64-byte factory-programmed unique ID + 64-byte user-programmable space - enables secure device authentication and cryptographic key binding in IoT edge nodes. |
| Individual sector lockdown | Makes any memory sector permanently read-only after freeze command - enforces immutable bootloader or calibration data in safety-critical applications. |
Applications
| Voice Recording Systems | Firmware Storage for Microcontrollers |
|---|---|
Use Scenario: Continuous digital voice capture in portable recorders or telehealth devices with limited PCB area and battery budget. IC Role / Device Role / Timing Role: Primary nonvolatile buffer storing PCM/WAV streams sequentially via RapidS™ read and dual-buffered write. Use Value: Ultra-deep power-down (400 nA) extends recording time between charges; 256-byte page size aligns with audio sample packetization for zero-copy DMA transfers. |
Use Scenario: Storing and updating application firmware in resource-constrained industrial controllers with field upgrade capability. IC Role / Device Role / Timing Role: Boot memory holding executable image and configuration parameters; accessed during cold start and OTA update cycles. Use Value: Sector lockdown protects bootloader region from corruption; suspend/resume ensures deterministic response during firmware validation before reprogramming. |
| Embedded Boot Code Storage | Telematics Data Logging |
Use Scenario: Secure boot initialization in automotive ECUs where verified firmware must load before CAN communication begins. IC Role / Device Role / Timing Role: First-stage boot memory providing authenticated code to MCU ROM loader; accessed via SPI at startup. Use Value: Factory-unique ID enables hardware-rooted chain-of-trust; 20-year data retention guarantees boot integrity over vehicle lifetime. |
Use Scenario: Long-duration vehicle diagnostic data capture in fleet management gateways operating on intermittent power. IC Role / Device Role / Timing Role: Circular buffer for GPS, sensor, and event logs; written continuously using buffer-to-main-memory page program with built-in erase. Use Value: 100,000-cycle endurance supports daily log rotation for >27 years; low active current (11 mA @ 20 MHz) minimizes energy draw during burst writes. |
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, no RapidS™, 104 MHz max, 1.65–1.95 V or 2.7–3.6 V dual supply | Lacks dual-buffer interleaving and page-size flexibility; better suited for random-access code execution than streaming data capture | Select when cost-sensitive designs require pure NOR compatibility and do not need E2PROM emulation or continuous write pipelining |
| Macronix MX25L8006EM1I-12G | 8 Mbit SPI NOR Flash, no SRAM buffers, standard SPI only, 80 MHz max, 2.7–3.6 V supply, no ultra-deep power-down | No low-power deep-sleep mode (min 25 µA standby); no sector lockdown or OTP security register | Choose for legacy systems requiring pin-compatible replacement with minimal firmware changes but no advanced security or power optimization needs |
Compared with W25Q80DVSSIG and MX25L8006EM1I-12G, the AT45DB081E-SHNHA-T uniquely delivers simultaneous data ingestion and memory programming via dual buffers, factory-configurable page size for optimal filesystem alignment, and hardware-enforced sector lockdown - making it the only option among the three that supports robust, low-power, streaming-capable firmware and data storage in safety-aware embedded systems.
Availability
AT45DB081E-SHNHA-T is available at Aetrix Electronics and suitable for voice recording systems, firmware storage for microcontrollers, and embedded boot code storage requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for AT45DB081E-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 specializing in 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 nonvolatile storage in bandwidth-constrained embedded systems where traditional parallel Flash or EEPROM is impractical.
FAQ
What is the maximum SPI clock frequency supported by the AT45DB081E-SHNHA-T?
The AT45DB081E-SHNHA-T supports up to 85 MHz in RapidS™ mode (opcodes 0Bh and 1Bh), enabling high-throughput sequential reads. In standard SPI mode, it operates up to 66 MHz. The clock-to-output time (tV) is guaranteed at ≤6 ns, ensuring timing margin for fast microcontroller interfaces. This performance is validated across the full industrial temperature range (–40°C to +85°C).
Does the AT45DB081E-SHNHA-T support true byte-level writes like EEPROM?
The AT45DB081E-SHNHA-T does not support direct byte-level writes to main memory, but provides E2PROM emulation via a self-contained three-step read-modify-write operation using its dual SRAM buffers. This allows bit- or byte-alterability without external software overhead, preserving data integrity during partial updates - a key capability distinguishing it from standard SPI NOR Flash devices.
How is page size configured on the AT45DB081E-SHNHA-T?
Page size (256 bytes vs. 264 bytes) on the AT45DB081E-SHNHA-T is factory-configured and fixed per unit - not user-programmable in-system. The -SHNHA-T variant uses the standard DataFlash page size of 264 bytes. Configuration is set during wafer test and cannot be altered post-manufacture; users must select the appropriate ordering code (e.g., -SHNHA-T for 264-byte pages) at procurement.
What security features does the AT45DB081E-SHNHA-T provide beyond basic write protection?
Beyond WP-pin-based hardware protection, the AT45DB081E-SHNHA-T offers sector lockdown (making any sector permanently read-only after freeze), a 128-byte OTP Security Register with 64-byte factory-unique ID, and software-controlled sector protection registers. These features enable hardware-rooted device authentication, immutable bootloader storage, and tamper-resistant calibration data - critical for certified industrial and automotive applications.
Can the AT45DB081E-SHNHA-T operate from a 1.8 V supply in all modes?
Yes, the AT45DB081E-SHNHA-T fully supports 1.7 V to 3.6 V operation across all functions - including read, program, erase, RapidS™ mode, and ultra-deep power-down. At 1.8 V, it maintains full 85 MHz RapidS™ capability and 100,000-cycle endurance, eliminating need for voltage translation in 1.8 V FPGA or MCU designs and simplifying power architecture in multi-rail systems.
AT45DB081E-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:
- 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-SHNHA-T FAQ
1.How can I place an order for AT45DB081E-SHNHA-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DB081E-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 AT45DB081E-SHNHA-T reliable?
The price and inventory of AT45DB081E-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 AT45DB081E-SHNHA-T is usually 5 days.
3.What payment methods are accepted for AT45DB081E-SHNHA-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DB081E-SHNHA-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DB081E-SHNHA-T?
AT45DB081E-SHNHA-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DB081E-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 AT45DB081E-SHNHA-T?
For technical support, including AT45DB081E-SHNHA-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DB081E-SHNHA-T requirements.
6.How does Aetrix verify that AT45DB081E-SHNHA-T is sourced from the original manufacturer or authorized distributors?
All AT45DB081E-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 AT45DB081E-SHNHA-T meets industry standards.
7.What is the process for return or replacement of AT45DB081E-SHNHA-T?
All AT45DB081E-SHNHA-T units undergo pre-shipment inspection (PSI). If there is an issue with AT45DB081E-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 AT45DB081E-SHNHA-T part is unused and in its original packaging.
Return procedure for AT45DB081E-SHNHA-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AT45DB081E-SHNHA-T Tags
-
M24C02-WMN6TP
STMicroelectronics
-
AT24C02C-XHM-T
Microchip Technology
-
AT21CS01-STUM10-T
Microchip Technology
-
AT24C02C-SSHM-T
Microchip Technology
-
24LC01BT-I/OT
Microchip Technology
-
M24C02-FMC6TG
STMicroelectronics
-
AT24CS02-SSHM-T
Microchip Technology
-
93LC46BT-I/OT
Microchip Technology
-
AT24C04C-SSHM-T
Microchip Technology
-
24LC01BT-I/SN
Microchip Technology
-
24AA02UIDT-I/OT
Microchip Technology
-
AT24C08C-STUM-T
Microchip Technology
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
