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| PartNumber | MR20H40CDF | MR20H40CDFR | MR20H40DF |
| Description | NVRAM 4Mb 3.3V 50Mhz 512K x 8 SPI | NVRAM 4Mb 3.3V 50Mhz 512K x 8 SPI | NVRAM 4Mb 3.3V 50Mhz 512K x 8 SPI |
| Manufacturer | Everspin Technologies | Everspin Technologies | Everspin Technologies |
| Product Category | NVRAM | NVRAM | NVRAM |
| RoHS | Y | Y | Y |
| Package / Case | DFN-8 | DFN-8 | DFN-8 |
| Interface Type | SPI | SPI | SPI |
| Memory Size | 4 Mbit | 4 Mbit | 4 Mbit |
| Organization | 512 k x 8 | 512 k x 8 | 512 k x 8 |
| Data Bus Width | 8 bit | 8 bit | 8 bit |
| Access Time | 20 ns | 20 ns | 20 ns |
| Supply Voltage Max | 3.6 V | 3.6 V | 3.6 V |
| Supply Voltage Min | 3 V | 3 V | 3 V |
| Operating Supply Current | 46.5 mA | 46.5 mA | 46.5 mA |
| Minimum Operating Temperature | - 40 C | - 40 C | 0 C |
| Maximum Operating Temperature | + 85 C | + 85 C | + 70 C |
| Series | MR20H40 | MR20H40 | MR20H40 |
| Packaging | Tray | Reel | Tray |
| Brand | Everspin Technologies | Everspin Technologies | Everspin Technologies |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Moisture Sensitive | Yes | - | Yes |
| Pd Power Dissipation | 0.6 W | 0.6 W | 0.6 W |
| Product Type | NVRAM | NVRAM | NVRAM |
| Factory Pack Quantity | 570 | 4000 | 570 |
| Subcategory | Memory & Data Storage | Memory & Data Storage | Memory & Data Storage |
| Unit Weight | 0.001319 oz | - | 0.001319 oz |