AT25DF041A Datasheet



The AT25DF041A is a serial interface Flash memory device designed for use in a wide variety of high-volume consumer-based applications in which program code is shadowed from Flash memory into embedded or external RAM for execution. The flexible erase architecture of the AT25DF041A, with its erase granularity as small as 4 Kbytes, makes it ideal for data storage as well, eliminating the need for additional data storage EEPROM devices.The physical sectoring and the erase block sizes of the AT25DF041A have been optimized to meet the needs of today’s code and data storage applications. By optimizing the size of the physical sectors and erase blocks, the memory space can be used much more efficiently. Because certain code modules and data storage segments must reside by themselves in their own protected sectors, the wasted and unused memory space that occurs with large sectored and large block erase Flash memory devices can be greatly reduced. This increased memory space efficiency allows additional code routines and data storage segments to be added while still maintaining the same overall device density.The AT25DF041A also offers a sophisticated method for protecting individual sectors against erroneous or malicious program and erase operations. By providing the ability to individually protect and unprotect sectors, a system can unprotect a specific sector to modify its contents while keeping the remaining sectors of the memory array securely protected. This is useful in applications where program code is patched or updated on a subroutine or module basis, or in applications where data storage segments need to be modified without running the risk of errant modifications to the program code segments. In addition to individual sector protection capabilities, the AT25DF041A incorporates Global Protect and Global Unprotect features that allow the entire memory array to be either protected or unprotected all at once. This reduces overhead during the manufacturing process since sectors do not have to be unprotected one-by-one prior to initial programming.Specifically designed for use in 2.5-volt or 3-volt systems, the AT25DF041A supports read, program, and erase operations with a supply voltage range of 2.3V to 3.6V or 2.7V to 3.6V. No separate voltage is required for programming and erasing. AT25DF041A Features • Single 2.3V - 3.6V or 2.7V - 3.6V Supply• Serial Peripheral Interface (SPI) Compatible– Supports SPI Modes 0 and 3• 70 MHz Maximum Clock Frequency• Flexible, Uniform Erase Architecture– 4-Kbyte Blocks– 32-Kbyte Blocks– 64-Kbyte Blocks– Full Chip Erase• Individual Sector Protection with Global Protect/Unprotect Feature– One 16-Kbyte Top Sector– Two 8-Kbyte Sectors– One 32-Kbyte Sector– Seven 64-Kbyte Sectors• Hardware Controlled Locking of Protected Sectors via WP pin• Flexible Programming Options– Byte/Page Program (1 to 256 Bytes)– Sequential Program Mode Capability• Fast Program and Erase Times– 1.2 ms Typical Page Program (256 Bytes) Time– 50 ms Typical 4-Kbyte Block Erase Time– 250 ms Typical 32-Kbyte Block Erase Time– 400 ms Typical 64-Kbyte Block Erase Time• Automatic Checking and Reporting of Erase/Program Failures• JEDEC Standard Manufacturer and Device ID Read Methodology• Low Power Dissipation– 5 mA Active Read Current (Typical)– 15 μA Deep Power-down Current (Typical)• Endurance: 100,000 Program/Erase Cycles• Data Retention: 20 Years• Complies with Full Industrial Temperature Range• Industry Standard Green (Pb/Halide-free/RoHS Compliant) Package Options


[{"Name":"Format - Memory","Value":"FLASH"},{"Name":"Memory Type","Value":"FLASH"},{"Name":"Memory Size","Value":"4M (2048 pages x 256 bytes)"},{"Name":"Speed","Value":"70MHz"},{"Name":"Interface","Value":"SPI Serial"},{"Name":"Voltage - Supply","Value":"2.7 V ~ 3.6 V"},{"Name":"Operating Temperature","Value":"-40°C ~ 85°C"},{"Name":"","Value":""},{"Name":"","Value":""},{"Name":"","Value":""}]

Manufacturer information


Diodes Incorporated is a leading global manufacturer and supplier of high-quality, application-specific, standard products within the broad discrete, logic and analog semiconductor markets. Diodes Incorporated primarily serves the computing, consumer, communications, industrial and automotive segments. Diodes’ diverse product portfolio includes parts for LCD/LED TVs and displays, desktop, notebook and tablet computing, smartphones and hand-held devices, set-top boxes, power supplies and USB protection as well as many other application areas.

Diodes Incorporated offers a wide array of products including diodes, rectifiers, transistors, MOSFETs, gate drivers, protection devices, function-specific arrays, amplifiers and comparators, Hall-effect sensors and temperature sensors, power management devices including LED drivers, AC-DC converters and controllers, DC-DC switching regulators, linear voltage regulators, current monitors, and voltage reference and shunt regulators, along with special function devices including USB power switches, load switch devices, voltage supervisors and motor controllers.

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