The Am186TMED/EDLV microcontrollers are part of the AMD E86TM family of embedded microcontrollers and microprocessors based on the x86 architecture. The Am186ED/EDLV microcontrollers are the ideal upgrade for 80C186/188 designs requiring 80C186/188 compatibility, increased performance, serial communications, a direct bus interface, and more than 64K of memory. The Am186ED/EDLV microcontrollers integrate a complete DRAM controller to take advantage of low DRAM costs. This reduces memory subsystem costs while maintaining SRAM performance.The Am186ED/EDLV microcontrollers also integrate the functions of a CPU, nonmultiplexed address bus, three timers, watchdog timer, chip selects, interrupt controller, two DMA controllers, two asynchronous serial ports, programmable bus