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| PartNumber | AS4C64M4SA-7TCNTR | AS4C64M4SA-7TCN | AS4C64M4SA-7TIN |
| Description | DRAM 256Mb, 3.3V, 143Mhz 64M x 4 SDRAM | DRAM 256Mb, 3.3V, 143Mhz 64M x 4 SDRAM | DRAM 256Mb, 3.3V, 166Mhz 64M x 4 SDRAM |
| Manufacturer | Alliance Memory | Alliance Memory | Alliance Memory |
| Product Category | DRAM | DRAM | DRAM |
| RoHS | Y | Y | Y |
| Series | AS4C64M4SA | AS4C64M4SA | AS4C64M4SA |
| Packaging | Reel | Tray | Tray |
| Brand | Alliance Memory | Alliance Memory | Alliance Memory |
| Moisture Sensitive | Yes | Yes | Yes |
| Product Type | DRAM | DRAM | DRAM |
| Factory Pack Quantity | 1000 | 108 | 108 |
| Subcategory | Memory & Data Storage | Memory & Data Storage | Memory & Data Storage |
| Type | - | SDRAM | - |
| Data Bus Width | - | 4 bit | - |
| Organization | - | 64 M x 4 | - |
| Package / Case | - | TSOP-54 | - |
| Memory Size | - | 256 Mbit | - |
| Maximum Clock Frequency | - | 143 MHz | - |
| Access Time | - | 5.4 ns | - |
| Supply Voltage Max | - | 3.3 V | - |
| Supply Voltage Min | - | 3 V | - |
| Supply Current Max | - | 55 mA | - |
| Minimum Operating Temperature | - | 0 C | - |
| Maximum Operating Temperature | - | + 70 C | - |
| Mounting Style | - | SMD/SMT | - |