saravanamanikandan02

8051 microcontroller port functions 8051 microcontroller port port 3 configuration port 2 port 1 port 0 direct memeory access block diagram dma features of 8237 architecture of 8237 8237 dma controller counter mode tmer mode counter timer/counter mode 3 timer mode 2 timer mode 1 timer mode 0 timer timers of 8051 synchronous data transfer schemes asynchronous data transfer schemes mode 3 data transfer schemes mode 2 mode 1 mode 0 data transfer of 8085 serial interface instruction set 8085 addressing modes instruction set example addressing modes microprocessor timing diagram 8085 timing diagram machine cycles timing diagram interfacing usart archititecute 8251 usart