By: Masud-ul-Hasan
8
Reset
•
External reset is asynchronous to the internal clock.
•
RST pin must be high for at least two machine cycles
while the oscillator is running.
•
Internal RAM is not affected by reset.
•
Reset sets PC to 0000H.
•
Typical circuits:
8051
RST
+5V
8.2K
Ω
10µF
8051
RST
+5V
8.2K
Ω
10 µF
+5V
Manual Reset
Power-on Reset
Reset
100
Ω