Part Details for AT45DB021B-RI by Microchip Technology Inc
Results Overview of AT45DB021B-RI by Microchip Technology Inc
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Applications
Consumer Electronics
Internet of Things (IoT)
Computing and Data Storage
AT45DB021B-RI Information
AT45DB021B-RI by Microchip Technology Inc is a Flash Memory.
Flash Memories are under the broader part category of Memory Components.
Memory components are essential in electronics for computer processing. They can be volatile or non-volatile, depending on the desired function. Read more about Memory Components on our Memory part category page.
Part Details for AT45DB021B-RI
AT45DB021B-RI CAD Models
AT45DB021B-RI Part Data Attributes
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AT45DB021B-RI
Microchip Technology Inc
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Datasheet
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AT45DB021B-RI
Microchip Technology Inc
Flash, 256KX8, PDSO28
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| Part Life Cycle Code | Obsolete | |
| Ihs Manufacturer | MICROCHIP TECHNOLOGY INC | |
| Package Description | SOIC-28 | |
| Reach Compliance Code | unknown | |
| Samacsys Manufacturer | Microchip | |
| Additional Feature | ORGANIZED AS 1024 PAGES OF 264 BYTES EACH | |
| Clock Frequency-Max (fCLK) | 20 MHz | |
| Endurance | 100000 Write/Erase Cycles | |
| JESD-30 Code | R-PDSO-G28 | |
| Length | 18.25 mm | |
| Memory Density | 2097152 bit | |
| Memory IC Type | FLASH | |
| Memory Width | 8 | |
| Number of Functions | 1 | |
| Number of Terminals | 28 | |
| Number of Words | 262144 words | |
| Number of Words Code | 256000 | |
| Operating Mode | SYNCHRONOUS | |
| Operating Temperature-Max | 85 °C | |
| Operating Temperature-Min | -40 °C | |
| Organization | 256KX8 | |
| Output Characteristics | 3-STATE | |
| Package Body Material | PLASTIC/EPOXY | |
| Package Code | SOP | |
| Package Equivalence Code | SOP28,.4 | |
| Package Shape | RECTANGULAR | |
| Package Style | SMALL OUTLINE | |
| Parallel/Serial | SERIAL | |
| Programming Voltage | 3.3 V | |
| Seated Height-Max | 2.79 mm | |
| Serial Bus Type | SPI | |
| Standby Current-Max | 0.00001 A | |
| Supply Current-Max | 0.035 mA | |
| Supply Voltage-Max (Vsup) | 3.6 V | |
| Supply Voltage-Min (Vsup) | 2.7 V | |
| Supply Voltage-Nom (Vsup) | 3.3 V | |
| Surface Mount | YES | |
| Technology | CMOS | |
| Temperature Grade | INDUSTRIAL | |
| Terminal Form | GULL WING | |
| Terminal Pitch | 1.27 mm | |
| Terminal Position | DUAL | |
| Type | NOR TYPE | |
| Width | 8.69 mm | |
| Write Protection | HARDWARE |
AT45DB021B-RI Frequently Asked Questions (FAQ)
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The AT45DB021B-RI has a minimum of 100,000 erase cycles per sector, and a total of 2,000,000 erase cycles for the entire device.
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To handle page write buffer underrun or overrun errors, you should check the status register for errors after each write operation. If an error occurs, you can retry the write operation or reset the device.
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After power-up, the device should be reset by pulling the Reset pin low for at least 10 ns. Then, the device should be initialized by sending a series of commands to set the buffer size, sector protection, and other configuration options.
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The optimal buffer size depends on the specific requirements of your application. A larger buffer size can improve performance, but it also increases the risk of data loss in case of a power failure. A good starting point is to use the default buffer size of 528 bytes and adjust as needed based on your application's requirements.
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The main difference between the two devices is the operating voltage range. The AT45DB021B-RI operates from 2.7V to 3.6V, while the AT45DB021D-RI operates from 1.8V to 3.6V. The -RI suffix indicates that the device is in a SOIC package.