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| PartNumber | M29F040B90K1 | M29F040B90K6 | M29F040B90N1 |
| Description | NOR Flash 4M (512Kx8) 90ns | NOR Flash STD FLASH | NOR Flash 4M (512Kx8) 90ns |
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Product Category | NOR Flash | NOR Flash | NOR Flash |
| RoHS | N | N | N |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | PLCC-32 | PLCC-32 | TSOP-32 |
| Series | M29F | M29F | M29F |
| 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 | 15 mA | 15 mA | 15 mA |
| Minimum Operating Temperature | 0 C | - 40 C | 0 C |
| Maximum Operating Temperature | + 70 C | + 85 C | + 70 C |
| Packaging | Tube | Tube | Tray |
| Memory Type | NOR | NOR | NOR |
| Speed | 90 ns | 90 ns | 90 ns |
| Architecture | Block Erase | Block Erase | Block Erase |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Moisture Sensitive | Yes | Yes | Yes |
| Product Type | NOR Flash | NOR Flash | NOR Flash |
| Standard | Not Supported | Not Supported | Not Supported |
| Factory Pack Quantity | 32 | 32 | 156 |
| Subcategory | Memory & Data Storage | Memory & Data Storage | Memory & Data Storage |