AT45DB041D-MU Microchip Integrated Circuit (Small Outline No-lead) In Stock
Microchip AT45DB041D is a 4-megabit serial DataFlash memory using SPI interface operating from 2.5 V or 2.7 V supply with page-based erase and program architecture. It integrates two SRAM data buffers for efficient continuous write operations, housed in a compact MLF/MLP no-lead package.
- Manufacturer
- Microchip
- Package
- Small Outline No-lead
- Pin Count
- 9
- Lifecycle
- ACTIVE
- Datasheet
- AT45DB041D-MU Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of AT45DB041D-MU?
- 4 Mb serial DataFlash with SPI interface for simple microcontroller integration
- 2.5 V to 2.7 V supply voltage operation for low-power embedded system compatibility
- Dual SRAM data buffers enabling continuous page write operations without erase latency
- Page-based architecture with 256-byte or 264-byte page size for flexible data management
- Hardware-controlled erase and program with built-in write protection features
- Small outline no-lead package for compact PCB layouts in space-constrained designs
What is AT45DB041D-MU used for?
The AT45DB041D is used in embedded systems, consumer electronics, and wireless devices requiring non-volatile data logging, firmware storage, or configuration parameter retention via an SPI interface. Its dual data buffers make it well-suited for applications with continuous data streaming such as audio recorders, barcode scanners, and industrial data loggers. Microcontroller-based designs benefit from its straightforward page-program interface and compatibility with 2.5 V and 2.7 V system power rails.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the AT45DB041D-MU datasheet?
AT45DB041D-MU Datasheet DownloadOfficial datasheet from Microchip
What are equivalent replacements for AT45DB041D-MU?
Compatible alternatives and drop-in replacements for AT45DB041D-MU:
suggested
Frequently Asked Questions
How does the dual SRAM buffer architecture of AT45DB041D enable faster continuous data writes compared to single-buffer flash?
AT45DB041D provides 2 independent SRAM buffers, each matching the 264-byte page size. While one buffer is being programmed to the 4 Mb Flash array, the host microcontroller fills the second buffer via SPI. This ping-pong scheme eliminates the program latency gap, enabling sustained data logging rates without wait states between page writes.
At what SPI clock frequency can a 3.3 V microcontroller read data from the AT45DB041D DataFlash?
AT45DB041D supports SPI clock frequencies up to 66 MHz in fast-read mode for the 2.7 V variant. For standard read operations at 2.5 V supply, the maximum SPI clock is lower. This throughput is sufficient for firmware boot loading, audio sample streaming, and real-time sensor data logging on most embedded systems.
What is the endurance and retention specification of AT45DB041D for industrial data logging applications?
AT45DB041D is rated for a minimum of 100,000 erase/program cycles per page with 10 years of data retention, meeting typical industrial data logger requirements. The 4 Mb capacity with 2,048 pages means heavy-rotation logging applications can spread wear across many pages to extend operational lifetime.
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