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| PartNumber | SST39WF400B-70-4C-MAQE | SST39WF400B-70-4C-MAQE-T | SST39WF400B-70-4C-B3KE |
| Description | NOR Flash 4M (256Kx16) 70ns 1.65-1.95V Comm | NOR Flash 1.65V to 1.95V 4Mbit Multi-Purpose Flash | NOR Flash 4M (256Kx16) 70ns 1.8V Commercial |
| Manufacturer | Microchip | Microchip | Microchip |
| Product Category | NOR Flash | NOR Flash | NOR Flash |
| RoHS | Y | Y | Y |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | WFBGA-48 | WFBGA-48 | TFBGA-48 |
| Series | SST39WF | SST39WF | SST39WF |
| Memory Size | 4 Mbit | 4 Mbit | 4 Mbit |
| Interface Type | Parallel | Parallel | Parallel |
| Organization | 256 k x 16 | 256 k x 16 | 256 k x 16 |
| Timing Type | Asynchronous | Asynchronous | Asynchronous |
| Data Bus Width | 16 bit | 16 bit | 16 bit |
| Supply Voltage Min | 1.65 V | 1.65 V | 1.65 V |
| Supply Voltage Max | 1.95 V | 1.95 V | 1.95 V |
| Supply Current Max | 15 mA | 15 mA | 15 mA |
| Minimum Operating Temperature | 0 C | 0 C | 0 C |
| Maximum Operating Temperature | + 70 C | + 70 C | + 70 C |
| Packaging | Tray | Reel | Tray |
| Memory Type | NOR | NOR | NOR |
| Speed | 70 ns | 70 ns | 70 ns |
| Architecture | Sector | Sector | Sector |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Moisture Sensitive | Yes | Yes | Yes |
| Product Type | NOR Flash | NOR Flash | NOR Flash |
| Factory Pack Quantity | 740 | 2500 | 480 |
| Subcategory | Memory & Data Storage | Memory & Data Storage | Memory & Data Storage |