Instruction cycle in 8085 microprocessor – Machine cycle T-state: -

Instruction cycle – Machine cycle T-state: -

 

Instruction cycle: -

·      Total time taken required by execution to execute an instruction is known as instruction cycle.

·      Instruction cycle different type of task are involved that is known as machine cycle.

·      Instruction cycle is the group of one or more than one machine cycle.

·      In 8085 six types of machine cycle are define: -

i)              Opcode fetch machine cycle.

ii)            Memory read machine cycle. (R)

iii)          Memory writes machine cycle. (W)

iv)           Input read machine cycle. (I)

v)             Output writes machine cycle. (O)

         vi)           Bus idle machine cycle. (B)