The AT28HC256-12JUSL383 is a 256Kb parallel CMOS EPROM from Microchip. It operates at a maximum supply voltage of 5.5V and a minimum supply voltage of 4.5V. The device has a maximum operating temperature of 85°C and a minimum operating temperature of -40°C. It is organized in 32KX8 configuration and has a maximum access time of 120ns.
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| Access Time-Max | 120ns |
| Contact Plating | Tin, Matte |
| Density | 256Kb |
| Interface | Parallel |
| Max Operating Temperature | 85°C |
| Min Operating Temperature | -40°C |
| Max Supply Voltage | 5.5V |
| Min Supply Voltage | 4.5V |
| Mount | Surface Mount |
| Operating Supply Voltage | 5V |
| Organization | 32KX8 |
| Programming Voltage | 5.5V |
| RoHS | Compliant |
