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| Part Number | SST39WF800B-70-4C-B3KE | SST39WF800B-70-4I-B3KE | SST39WF400B-70-4C-B3KE | 
|---|---|---|---|
| Manufacturer | Microchip Technology | Microchip Technology | Microchip Technology | 
| Product Status | Active | Active | Active | 
| Memory Type | Non-Volatile | Non-Volatile | Non-Volatile | 
| Memory Format | Flash | Flash | Flash | 
| Technology | Flash | Flash | Flash | 
| Memory Size | 8Mb (512K x 16) | 8Mb (512K x 16) | 4Mb (256K x 16) | 
| Memory Interface | Parallel | Parallel | Parallel | 
| Clock Frequency | - | - | - | 
| Write Cycle Time - Word, Page | 40µs | 40µs | 40µs | 
| Access Time | 70 ns | 70 ns | 70 ns | 
| Voltage - Supply | 1.65V ~ 1.95V | 1.65V ~ 1.95V | 1.65V ~ 1.95V | 
| Operating Temperature | 0°C ~ 70°C (TA) | -40°C ~ 85°C (TA) | 0°C ~ 70°C (TA) | 
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | 
| Package / Case | 48-TFBGA | 48-TFBGA | 48-TFBGA | 
| Supplier Device Package | 48-TFBGA | 48-TFBGA | 48-TFBGA |