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| PartNumber | AT25SF321-MHD-T | AT25SF321-SHD-B | AT25SF321-DWF |
| Description | NOR Flash 8-UDFN (5x6x0.6), IND TEMP, 2.5V, T&R | NOR Flash 8-SOIC-W, IND TEMP, 2.5V, TUBE | NOR Flash Die in Wafer Form |
| Manufacturer | Adesto Technologies | Adesto Technologies | Adesto Technologies |
| Product Category | NOR Flash | NOR Flash | NOR Flash |
| RoHS | Y | Y | Y |
| Series | AT25SF321 | AT25SF321 | AT25SF321 |
| Packaging | Reel | Tube | - |
| Brand | Adesto Technologies | Adesto Technologies | Adesto Technologies |
| Moisture Sensitive | Yes | - | - |
| Product Type | NOR Flash | NOR Flash | NOR Flash |
| Factory Pack Quantity | 6000 | 90 | 1 |
| Subcategory | Memory & Data Storage | Memory & Data Storage | Memory & Data Storage |
| Mounting Style | - | - | SMD/SMT |
| Package / Case | - | - | Die |
| Memory Size | - | - | 32 Mbit |
| Maximum Clock Frequency | - | - | 104 MHz |
| Interface Type | - | - | SPI |
| Organization | - | - | 4 M x 8 |
| Data Bus Width | - | - | 8 bit |
| Supply Voltage Min | - | - | 2.5 V |
| Supply Voltage Max | - | - | 3.6 V |
| Supply Current Max | - | - | 16 mA |
| Minimum Operating Temperature | - | - | - 40 C |
| Maximum Operating Temperature | - | - | + 85 C |
| Memory Type | - | - | NOR |
| Speed | - | - | 104 MHz |
| Architecture | - | - | Flexible Erase |