8051 has 40 pins on DIP,yet the comparison with z80 microprocessor shows the 8051 has 58 pins function?
8051 has 40 pins on DIP,yet the comparison with z80 microprocessor shows the 8051 has 58 pins function?
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can u tell me the reset mechanism in 8051….how does it happen when we press press reset key on pin no. 9 and it drag the PC(program counter on 00)….??????
In microcontroller
Reset is the master interrupt with highest priority,which set values of all the register to its initial values like
PC -> 0000h
DPTR -> 0000h
PSW -> 00h AND So on
But for this we have to pass high to PIN 9 of 8051 through program.