BUY M27128A-2 F1 https://www.utsource.net/itm/p/8945344.html

Description: The M27128A-2F1 is a 28-pin CMOS programmable read-only memory (PROM) manufactured by STMicroelectronics. Features: - High speed access time: 200 ns - Low power consumption - High reliability - Low voltage operation - Low cost Applications: - Automotive - Industrial - Telecommunications - Computers - Consumer electronics (For reference only)