BUY AM7990PC/80 https://www.utsource.net/itm/p/103067.html
LAN Node Controller
Description: The AM7990PC/80 is a 48-pin DIP (dual in-line package) integrated circuit from AMD. It is a 16-bit microprocessor with a 16-bit data bus and a 20-bit address bus. Features: 16-bit microprocessor 16-bit data bus 20-bit address bus On-chip memory management unit On-chip interrupt controller On-chip DMA controller On-chip timer On-chip serial port On-chip parallel port On-chip clock generator On-chip power management On-chip memory protection On-chip cache Applications: The AM7990PC/80 is suitable for use in embedded systems, industrial automation, medical devices, and other applications that require a high-performance 16-bit microprocessor. It can be used for applications such as data acquisition, control, and communication. (For reference only)