| Part Number | NM93C56AN | NM93C66AN | 
|---|---|---|
| Manufacturer | Fairchild Semiconductor | Fairchild Semiconductor | 
| Category | Memory | Memory | 
|   |   | |
| Product Status | Active | Active | 
| Memory Type | Non-Volatile | Non-Volatile | 
| Memory Format | EEPROM | EEPROM | 
| Technology | EEPROM | EEPROM | 
| Memory Size | 2Kb (128 x 16) | 4Kb (512 x 8, 256 x 16) | 
| Memory Interface | SPI | SPI | 
| Clock Frequency | 1 MHz | 1 MHz | 
| Write Cycle Time - Word, Page | 10ms | 10ms | 
| Access Time | - | - | 
| Voltage - Supply | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 
| Operating Temperature | 0°C ~ 70°C (TA) | 0°C ~ 70°C (TA) | 
| Mounting Type | Through Hole | Through Hole | 
| Package / Case | 8-DIP (0.300", 7.62mm) | 8-DIP (0.300", 7.62mm) | 
| Supplier Device Package | 8-DIP | 8-DIP |