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| PartNumber | 93AA66C-I/MS | 93AA66C-I/P | 93AA66C-I/SM |
| Description | EEPROM 512x8-256x16 1.8V | EEPROM 256x8-128x16 - 1.8V | |
| Manufacturer | Microchip | Microchip | - |
| Product Category | EEPROM | EEPROM | - |
| RoHS | Y | Y | - |
| Mounting Style | SMD/SMT | Through Hole | - |
| Package / Case | MSOP-8 | PDIP-8 | - |
| Memory Size | 4 kbit | 4 kbit | - |
| Organization | 512 x 8, 256 x 16 | 512 x 8, 256 x 16 | - |
| Interface Type | Serial, 3-Wire, Microwire | Serial, 3-Wire, Microwire | - |
| Access Time | 200 ns | 200 ns | - |
| Data Retention | 200 Year | 200 Year | - |
| Maximum Clock Frequency | 1 MHz | 1 MHz | - |
| Supply Current Max | 2 mA | 2 mA | - |
| Supply Voltage Min | 1.8 V | 1.8 V | - |
| Supply Voltage Max | 5.5 V | 5.5 V | - |
| Minimum Operating Temperature | - 40 C | - 40 C | - |
| Maximum Operating Temperature | + 85 C | + 85 C | - |
| Packaging | Tube | Tube | - |
| Height | 0.85 mm | 3.3 mm | - |
| Length | 3 mm | 9.27 mm | - |
| Width | 3 mm | 6.35 mm | - |
| Brand | Microchip Technology | Microchip Technology | - |
| Operating Supply Current | 2 mA | 1 mA | - |
| Operating Supply Voltage | 1.8 V to 5.5 V | 1.8 V to 5.5 V | - |
| Product Type | EEPROM | EEPROM | - |
| Factory Pack Quantity | 100 | 60 | - |
| Subcategory | Memory & Data Storage | Memory & Data Storage | - |
| Unit Weight | 0.004938 oz | 0.032805 oz | - |