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| PartNumber | M29F400BB55N1 | M29F400BB55N6T TR | M29F400BB-55N6 |
| Description | NOR Flash 512Kx8 or 256Kx16 55 | IC FLASH 4M PARALLEL 48TSOP | |
| Manufacturer | STMicroelectronics | - | - |
| Product Category | NOR Flash | - | - |
| RoHS | N | - | - |
| Mounting Style | SMD/SMT | - | - |
| Package / Case | TSOP-48 | - | - |
| Series | M29F | - | - |
| Memory Size | 4 Mbit | - | - |
| Interface Type | Parallel | - | - |
| Organization | 512 k x 8, 256 k x 16 | - | - |
| Timing Type | Asynchronous | - | - |
| Data Bus Width | 8 bit, 16 bit | - | - |
| Supply Voltage Min | 4.5 V | - | - |
| Supply Voltage Max | 5.5 V | - | - |
| Supply Current Max | 20 mA | - | - |
| Minimum Operating Temperature | 0 C | - | - |
| Maximum Operating Temperature | + 70 C | - | - |
| Packaging | Tray | - | - |
| Memory Type | NOR | - | - |
| Speed | 55 ns | - | - |
| Architecture | Block Erase | - | - |
| Brand | STMicroelectronics | - | - |
| Moisture Sensitive | Yes | - | - |
| Product Type | NOR Flash | - | - |
| Standard | Not Supported | - | - |
| Factory Pack Quantity | 96 | - | - |
| Subcategory | Memory & Data Storage | - | - |