The MICROCHIP TECH. part AT27C256R-45JU is an EPROM (Erasable Programmable Read-Only Memory) chip that is One Time Programmable and has a capacity of 256Kbits (32K x 8). It operates at a speed of 45ns and comes in a 32-pin PLCC package. This high-quality chip is suitable for a wide range of applications and is delivered in a protective tube packaging for safe transportation and storage.