128 Kbit Parallel EPROM IC
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The 27C128-15 is a Microchip Technology 128-kilobit (16K x 8) Electrically Programmable Read-Only Memory (EPROM) integrated circuit. Fabricated using CMOS technology, it offers low power consumption and high noise immunity. The device features a parallel interface for address, data input/output, and control signals, enabling direct memory access. The -15 suffix denotes a maximum access time of 150 nanoseconds, specifying the delay between a valid address and valid data output. Programming is achieved via application of a higher-than-normal voltage to specific pins, allowing data to be written into the non-volatile memory cells. The 27C128-15 is typically used for storing firmware, lookup tables, and other data that requires non-volatility and relatively fast read access in embedded systems.