| Part Number | AT49F001NT-55JC | AT49F001N-55JC | 
|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology | 
| Category | Memory | Memory | 
|   |   | |
| Product Status | Obsolete | Obsolete | 
| Memory Type | Non-Volatile | Non-Volatile | 
| Memory Format | Flash | Flash | 
| Technology | Flash | Flash | 
| Memory Size | 1Mb (128K x 8) | 1Mb (128K x 8) | 
| Memory Interface | Parallel | Parallel | 
| Clock Frequency | - | - | 
| Write Cycle Time - Word, Page | 50µs | 50µs | 
| Access Time | 55 ns | 55 ns | 
| Voltage - Supply | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 
| Operating Temperature | 0°C ~ 70°C (TC) | 0°C ~ 70°C (TC) | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 32-LCC (J-Lead) | 32-LCC (J-Lead) | 
| Supplier Device Package | 32-PLCC (13.97x11.43) | 32-PLCC (13.97x11.43) |