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| PartNumber | SST39SF040-45-4C-WHE | SST39SF040-45-4C-NHE-T | SST39SF040-45-4C-WHE-T |
| Description | NOR Flash 512K X 8 45ns | NOR Flash 4.5 to 5.5 4Mbit Multi-Purpose Flash | NOR Flash 4.5 to 5.5 4Mbit Multi-Purpose Flash |
| 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 | TSOP-32 | PLCC-32 | TSOP-32 |
| Series | SST39SF | SST39SF | SST39SF |
| Memory Size | 4 Mbit | 4 Mbit | 4 Mbit |
| Interface Type | Parallel | Parallel | Parallel |
| Organization | 512 k x 8 | 512 k x 8 | 512 k x 8 |
| Timing Type | Asynchronous | Asynchronous | Asynchronous |
| Data Bus Width | 8 bit | 8 bit | 8 bit |
| Supply Voltage Min | 4.5 V | 4.5 V | 4.5 V |
| Supply Voltage Max | 5.5 V | 5.5 V | 5.5 V |
| Supply Current Max | 25 mA | 25 mA | 25 mA |
| Minimum Operating Temperature | 0 C | 0 C | 0 C |
| Maximum Operating Temperature | + 70 C | + 70 C | + 70 C |
| Packaging | Tray | Reel | Reel |
| Height | 1.05 (Max) mm | - | - |
| Length | 8.1 (Max) mm | - | - |
| Memory Type | NOR | NOR | NOR |
| Speed | 45 ns | 45 ns | 45 ns |
| Type | No Boot Block | - | - |
| Width | 12.5 (Max) mm | - | - |
| Architecture | Sector | Sector | Sector |
| Brand | Microchip Technology | Microchip Technology | Microchip Technology |
| Moisture Sensitive | Yes | - | - |
| Product Type | NOR Flash | NOR Flash | NOR Flash |
| Programming Voltage | 4.5 V to 5.5 V | - | - |
| Standard | Not Supported | - | - |
| Factory Pack Quantity | 208 | 750 | 1500 |
| Subcategory | Memory & Data Storage | Memory & Data Storage | Memory & Data Storage |