| Part Number | CY62256NLL-55SNXI | CY62256NLL-55SNXE | 
|---|---|---|
| Manufacturer | Alliance Memory, Inc. | Infineon Technologies | 
| Category | Memory | Memory | 
|   |   | |
| Product Status | Active | Obsolete | 
| Memory Type | Volatile | Volatile | 
| Memory Format | SRAM | SRAM | 
| Technology | SRAM - Asynchronous | SRAM - Asynchronous | 
| Memory Size | 256Kb (32K x 8) | 256Kb (32K x 8) | 
| Memory Interface | Parallel | Parallel | 
| Clock Frequency | - | - | 
| Write Cycle Time - Word, Page | 55ns | 55ns | 
| Access Time | 55 ns | 55 ns | 
| Voltage - Supply | 4.5V ~ 5.5V | 4.5V ~ 5.5V | 
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 125°C (TA) | 
| Mounting Type | Surface Mount | Surface Mount | 
| Package / Case | 28-SOIC (0.295", 7.50mm Width) | 28-SOIC (0.295", 7.50mm Width) | 
| Supplier Device Package | 28-SOIC | 28-SOIC |