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| Part Number | CY7C421-15AXC | CY7C4211-15AXC | CY7C421-15AXCT | CY7C4221-15AXC | CY7C4231-15AXC | CY7C421-15AC |
|---|---|---|---|---|---|---|
| Manufacturer | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Infineon Technologies | Cypress Semiconductor Corp |
| Product Status | Obsolete | Obsolete | Obsolete | Obsolete | Obsolete | Active |
| Memory Size | 4.5K (512 x 9) | 4.5K (512 x 9) | 4.5K (512 x 9) | 9K (1K x 9) | 18K (2K x 9) | 512 x 9 |
| Function | Asynchronous | Synchronous | Asynchronous | Synchronous | Synchronous | Asynchronous |
| Data Rate | 50MHz | 66.7MHz | 50MHz | 66.7MHz | 66.7MHz | 40MHz |
| Access Time | 15ns | 10ns | 15ns | 10ns | 10ns | 15ns |
| Voltage - Supply | 4.5 V ~ 5.5 V | 4.5 V ~ 5.5 V | 4.5 V ~ 5.5 V | 4.5 V ~ 5.5 V | 4.5 V ~ 5.5 V | 4.5 V ~ 5.5 V |
| Current - Supply (Max) | 65mA | 35mA | 65mA | 35mA | 35mA | 65mA |
| Bus Directional | Uni-Directional | Uni-Directional | Uni-Directional | Uni-Directional | Uni-Directional | Uni-Directional |
| Expansion Type | Depth, Width | Depth, Width | Depth, Width | Depth, Width | Depth, Width | Depth, Width |
| Programmable Flags Support | No | Yes | No | Yes | Yes | No |
| Retransmit Capability | Yes | No | Yes | No | No | Yes |
| FWFT Support | No | No | No | No | No | No |
| Operating Temperature | 0°C ~ 70°C | 0°C ~ 70°C | 0°C ~ 70°C | 0°C ~ 70°C | 0°C ~ 70°C | 0°C ~ 70°C |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Package / Case | 32-TQFP | 32-TQFP | 32-TQFP | 32-TQFP | 32-TQFP | 32-TQFP |
| Supplier Device Package | 32-TQFP (7x7) | 32-TQFP (7x7) | 32-TQFP (7x7) | 32-TQFP (7x7) | 32-TQFP (7x7) | 32-TQFP (7x7) |
