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| PartNumber | FM25640B-GATR | FM25640B-GA. | FM25640B-GA |
| Description | F-RAM 64Kb Serial SPI 5V FRAM | IC FRAM 64K SPI 4MHZ 8SOIC Automotive, AEC-Q100, F-RAM | |
| Manufacturer | Cypress Semiconductor | - | Ramtron |
| Product Category | F-RAM | - | Memory |
| RoHS | Y | - | - |
| Mounting Style | SMD/SMT | - | SMD/SMT |
| Package / Case | SOIC-8 | - | - |
| Memory Size | 64 kbit | - | 64K (8K x 8) |
| Interface Type | SPI | - | SPI |
| Organization | 8 k x 8 | - | 8192 x 8 bit |
| Supply Voltage Min | 4.5 V | - | - |
| Supply Voltage Max | 5.5 V | - | - |
| Minimum Operating Temperature | - 40 C | - | - 40 C |
| Maximum Operating Temperature | + 125 C | - | + 125 C |
| Series | FM25640B-GA | - | F-RAM |
| Packaging | Reel | - | Tube |
| Brand | Cypress Semiconductor | - | - |
| Moisture Sensitive | Yes | - | - |
| Operating Supply Voltage | 5 V | - | 5 V |
| Product Type | FRAM | - | - |
| Factory Pack Quantity | 2500 | - | - |
| Subcategory | Memory & Data Storage | - | - |
| Unit Weight | 0.019048 oz | - | 0.019048 oz |
| Operating Temperature Range | - | - | - 40 C to + 125 C |
| Package Case | - | - | SOIC-8 |
| Operating Temperature | - | - | -40°C ~ 125°C (TA) |
| Interface | - | - | SPI Serial |
| Voltage Supply | - | - | 4.5 V ~ 5.5 V |
| Supplier Device Package | - | - | 8-SOIC |
| Memory Type | - | - | FRAM (Ferroelectric RAM) |
| Speed | - | - | 4MHz |
| Format Memory | - | - | RAM |
| Supply Voltage Max | - | - | 5.5 V |
| Supply Voltage Min | - | - | 4.5 V |