Everspin MR20H40 MRAM
4 Mb Toggle MRAM with SPI for data that must survive loss of power.
Family specifications
MR20H40 ordering options
- Density / capacity
- 4 Mb
- Interface / type
- SPI
- I/O width
- SPI
- Supply voltage
- 3.3 V
- Package
- DFN-8 Small Flag
- Operating temperature
- −40 to 85 °C
- Clock frequency
- 50 MHz
Options vary by complete part number. Match the selected device to the controller, board layout and operating conditions.
Available MR20H40 part numbers.
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Interface
Density
Supply voltage
Package
Operating temperature
2 products
| MR20H40CDFEverspin MR20H404 Mb Toggle MRAM with SPI, SPI I/O, DFN-8 Small Flag package, and -40 to +85 °C operation. | 4 Mb | SPI | 3.3 V | DFN-8 Small Flag | −40 to 85 °C | 50 MHz | SPI | Mass production (MP) | Toggle MRAM | MR20H40 |
| MR20H40CDFREverspin MR20H404 Mb Toggle MRAM with SPI, SPI I/O, DFN-8 Small Flag package, and -40 to +85 °C operation. | 4 Mb | SPI | 3.3 V | DFN-8 Small Flag | −40 to 85 °C | 50 MHz | SPI | Mass production (MP) | Toggle MRAM | MR20H40 |
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Density
Interface
Supply voltage
Package
Operating temperature
Design considerations
SPI devices use a small pin count for frequent writes without a flash erase cycle. MR10Q010 provides a 1 Mb Quad SPI option with separate 3.3 V core and 1.8 V I/O supplies. Check the command set and power sequencing when replacing another serial memory.