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Microchip Technology AT45DB011D-MH-T
- Part No.:
- AT45DB011D-MH-T
- Manufacturer:
- Microchip Technology
- Category:
- Memory
- Package:
- 8-UDFN Exposed Pad
- Datasheet:
-
AT45DB011D-MH-T.pdf
- Description:
- IC FLASH 1MBIT SPI 66MHZ 8UDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,064
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Product details
Overview
AT45DB011D-MH-T from Adesto Technologies (now part of Dialog Semiconductor) is a 1 Mbit serial DataFlash® memory IC with RapidS SPI interface, organized as 512 pages × 256/264 bytes, supporting up to 66 MHz clock frequency, single 2.7–3.6 V supply, and industrial temperature range. It integrates one 256/264-byte SRAM buffer and enables code shadowing in embedded boot systems.
For engineers reviewing the AT45DB011D-MH-T datasheet, AT45DB011D-MH-T pinout, AT45DB011D-MH-T application, or AT45DB011D-MH-T equivalent, key selection criteria include page-programmability, sector-level hardware/software protection, continuous array read capability, and low-power deep power-down mode (15 µA typical).
Technical Context
The AT45DB011D-MH-T implements a dual-layer memory architecture: main Flash array (512 pages) plus one dedicated SRAM data buffer (256/264 bytes), enabling simultaneous buffering and background programming. Its RapidS interface supports SPI Modes 0 and 3 with programmable page size (256 or 264 bytes), factory-configurable for 256-byte alignment.
All erase and program operations are self-timed and require no external high-voltage supply. Hardware write protection via WP pin operates independently of software sector lockdown, and the 128-byte security register includes 64-byte user-programmable space and unique 64-byte device identifier - critical for secure firmware storage and anti-cloning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Memory Capacity | 1,081,344 bits (1 Mbit), organized as 512 pages × 256 or 264 bytes |
| Interface Speed | Up to 66 MHz SCK for Continuous Array Read (Legacy E8H & High-Freq 0BH modes) |
| Supply Voltage | 2.7 V to 3.6 V single supply - eliminates need for voltage translators in 3.3 V systems |
| Power Consumption | 7 mA active read current; 25 µA standby; 15 µA deep power-down - enables battery-backed operation |
| Erase Granularity | Page (256 B), Block (2 KB), Sector (32 KB), Chip (1 Mbit) - supports fine-grained firmware updates |
| Data Retention | 20 years minimum - validated for long-life industrial deployments |
| Endurance | 100,000 program/erase cycles per page - suitable for frequent logging or configuration storage |
Pinout & Package
AT45DB011D-MH-T is packaged in an 8-pin SOIC (Small Outline Integrated Circuit) with standard 150-mil body width and RoHS-compliant green finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS | Chip Select | Active-low enable; falling edge initiates command sequence; rising edge triggers self-timed operation |
| SCK | Serial Clock | Input clock controlling data latching (SI on rising edge) and output timing (SO on falling edge) |
| SI | Serial Input | Command, address, and data input path; MSB-first protocol; requires stable setup/hold relative to SCK |
| SO | Serial Output | Command-status, memory, or buffer data output; tri-stated when CS is high |
| WP | Hardware Write Protect | Active-low pin that locks protected sectors regardless of software state; internally pulled high |
| RESET | Asynchronous Reset | Active-low signal aborts ongoing operation and resets internal state machine; optional but recommended for robust recovery |
| VCC | Power Supply | 2.7–3.6 V supply input; must remain within spec during all operations to prevent corruption |
| GND | Ground Reference | System ground connection; required for stable logic levels and noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Continuous Array Read | Enables seamless code shadowing without address re-issuance - eliminates CPU overhead during boot execution |
| User-Configurable Page Size | Supports both 256-byte (binary-aligned) and 264-byte (DataFlash-standard) pages - simplifies migration from legacy EEPROM or other DataFlash variants |
| Dual Protection Scheme | Combines hardware WP pin + software sector lockdown - prevents accidental or malicious overwrite of secure firmware partitions |
| SRAM Data Buffer | 256/264-byte internal buffer allows overlap of data loading and Flash programming - improves effective write throughput |
| JEDEC ID Support | Standard Manufacturer and Device ID readout - enables automated BOM verification and supply-chain traceability |
Applications
| Boot Code Storage | Firmware Update Storage |
|---|---|
Use Scenario: Storing primary bootloader and application firmware in resource-constrained microcontroller-based systems. IC Role / Device Role / Timing Role: Non-volatile code storage with fast sequential read access for XIP (eXecute-In-Place) or copy-to-RAM boot flow. Use Value: Continuous Array Read at up to 66 MHz reduces boot latency; 20-year retention ensures field reliability across product lifetime. | Use Scenario: Holding staged firmware images for over-the-air (OTA) or field-upgrade applications in industrial gateways. IC Role / Device Role / Timing Role: Dual-bank update storage with sector-level lockdown to preserve running firmware while writing new version. Use Value: Independent sector protection prevents corruption during partial writes; 100K endurance supports repeated field updates. |
| Secure Configuration Storage | Audio/Log Data Buffering |
Use Scenario: Storing calibrated sensor parameters, cryptographic keys, and device-specific identifiers in medical or automotive ECUs. IC Role / Device Role / Timing Role: Secure non-volatile storage with hardware-enforced write lock and unique device ID for anti-counterfeiting. Use Value: 128-byte security register with 64-byte user space + 64-byte UID enables tamper-resistant provisioning and lifecycle management. | Use Scenario: Capturing time-series sensor logs or voice snippets in battery-powered IoT endpoints. IC Role / Device Role / Timing Role: Low-power data logger with deep power-down (15 µA) between sampling intervals and burst-write capability. Use Value: 25 µA standby and 15 µA deep power-down extend battery life; flexible erase options allow efficient log rotation without full chip erase. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar serial Flash memory applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AT45DB011E-MH-T | Successor revision with enhanced ESD tolerance and updated manufacturing process; identical pinout, timing, and command set | No functional change - drop-in replacement for new designs requiring latest qualification | Select AT45DB011E-MH-T for new designs where long-term supply assurance and updated reliability testing are prioritized. |
| W25Q80DVSSIG | 8 Mbit SPI Flash (vs. 1 Mbit); quad I/O support; no integrated SRAM buffer; different erase hierarchy (4 KB sectors) | Better suited for larger firmware images; lacks built-in buffer for read-modify-write emulation | Choose W25Q80DVSSIG only when capacity >1 Mbit is required and buffer-assisted EEPROM emulation is not needed. |
Compared with AT45DB011D-MH-T, the AT45DB011E-MH-T offers identical functionality with improved robustness, while W25Q80DVSSIG trades buffer-based flexibility and fine-grain erase control for higher density and quad-speed performance - making it unsuitable for direct replacement in buffer-dependent or low-endurance-critical applications.
Availability
AT45DB011D-MH-T is available at Aetrix Electronics and suitable for boot code storage, firmware update staging, secure configuration retention, and audio/log data buffering requiring stable component supply across industrial, medical, and connected-device programs.
Supply support for AT45DB011D-MH-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
Adesto Technologies, acquired by Dialog Semiconductor in 2020, specialized in low-power, high-reliability non-volatile memory and analog ICs for industrial and IoT applications.
The AT45DB011D-MH-T belongs to the DataFlash® family - designed specifically for systems needing SPI-based Flash with integrated SRAM buffer, rapid sequential read, and hardware-assisted data integrity for embedded code and secure data storage.
FAQ
What is the maximum clock frequency supported by AT45DB011D-MH-T for continuous array read?
The AT45DB011D-MH-T supports up to 66 MHz for Continuous Array Read using Legacy (E8H) and High-Frequency (0BH) command modes. This enables high-throughput code shadowing in boot applications. The Low-Frequency mode (03H) supports up to 33 MHz without dummy byte overhead. All timing specifications are defined in the official datasheet under fCAR1 and fCAR2 parameters.
Does AT45DB011D-MH-T require high-voltage programming or external charge pumps?
No, AT45DB011D-MH-T operates entirely from a single 2.7–3.6 V supply for both read and program/erase operations. All internal programming and erase cycles are self-timed and use on-chip charge pumps - eliminating the need for external high-voltage generators or complex power sequencing. This simplifies system design and improves reliability in 3.3 V embedded platforms.
How does the SRAM buffer in AT45DB011D-MH-T improve system performance?
The AT45DB011D-MH-T includes a dedicated 256/264-byte SRAM buffer that enables overlapping of data loading (via SI) and Flash programming (buffer-to-page). This pipelining reduces effective write latency and supports efficient EEPROM emulation via three-step read-modify-write. Unlike standard SPI Flash, this buffer eliminates host-side RAM buffering requirements for small updates.
Can AT45DB011D-MH-T be used for secure firmware storage with hardware-based protection?
Yes, AT45DB011D-MH-T provides dual-layer security: hardware write protection via the active-low WP pin (independent of software state) and software-configurable sector lockdown. Its 128-byte security register contains 64-byte user-programmable space and a unique 64-byte device identifier - enabling cryptographically verifiable firmware signing and anti-cloning in certified industrial and medical devices.
What package type and pin count does AT45DB011D-MH-T use?
AT45DB011D-MH-T uses an 8-pin SOIC (Small Outline Integrated Circuit) package with 150-mil body width, RoHS-compliant, lead-free, and halogen-free construction. Pin functions include CS, SCK, SI, SO, WP, RESET, VCC, and GND - matching industry-standard SPI Flash pinouts for straightforward PCB layout and compatibility with common programming adapters.
AT45DB011D-MH-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-UDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Programmable:
- Not Verified
- Memory Type:
- Non-Volatile
- Memory Format:
- FLASH
- Technology:
- FLASH
- Memory Size:
- 1Mbit
- Memory Organization:
- 264 Bytes x 512 pages
- Memory Interface:
- SPI
- Clock Frequency:
- 66 MHz
- Write Cycle Time - Word, Page:
- 4ms
- Access Time:
- -
- Voltage - Supply:
- 2.7V ~ 3.6V
- Operating Temperature:
- -40°C ~ 85°C (TC)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-UDFN (5x6)
AT45DB011D-MH-T FAQ
1.How can I place an order for AT45DB011D-MH-T through Aetrix?
Please submit a Request for Quotation (RFQ) for AT45DB011D-MH-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 AT45DB011D-MH-T reliable?
The price and inventory of AT45DB011D-MH-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AT45DB011D-MH-T is usually 5 days.
3.What payment methods are accepted for AT45DB011D-MH-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AT45DB011D-MH-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AT45DB011D-MH-T?
AT45DB011D-MH-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AT45DB011D-MH-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 AT45DB011D-MH-T?
For technical support, including AT45DB011D-MH-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AT45DB011D-MH-T requirements.
6.How does Aetrix verify that AT45DB011D-MH-T is sourced from the original manufacturer or authorized distributors?
All AT45DB011D-MH-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 AT45DB011D-MH-T meets industry standards.
7.What is the process for return or replacement of AT45DB011D-MH-T?
All AT45DB011D-MH-T units undergo pre-shipment inspection (PSI). If there is an issue with AT45DB011D-MH-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 AT45DB011D-MH-T part is unused and in its original packaging.
Return procedure for AT45DB011D-MH-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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