| Clock Frequency | 10 MHz | |
| Operating Temperature | -40°C ~ 85°C (TA) | |
| Memory Interface | SPI | |
| ECCN | EAR99 | |
| Memory Organization | 512 x 8 | |
| Mounting Type | Surface Mount | |
| Memory Type | Non-Volatile | |
| Product Status | Active | |
| Supplier Device Package | SOT-23-6 | |
| Series | - | |
| Write Cycle Time - Word, Page | 5ms | |
| Memory Size | 4Kbit | |
| Package / Case | SOT-23-6 | |
| Technology | EEPROM | |
| Voltage - Supply | 1.8V ~ 5.5V | |
| REACH Status | REACH Unaffected | |
| Mfr | Microchip Technology | |
| HTSUS | 8542.32.0051 | |
| Package | Tape & Reel (TR) | |
| Memory Format | EEPROM | |
| RoHS Status | ROHS3 Compliant | |
| Base Product Number | 25AA040 | |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
