By: Masud-ul-Hasan
5
8051 Block Diagram
Interrupt Control
5 Interrupts
CPU
OSC
Timer 1
Timer 0
Serial
Port
I/O Ports
Control
Bus
Counter
Inputs
P0
P3
P1
4k byte
ROM
128 byte
RAM
P2
(Address/Data)
TXD
RXD
ALE
PSEN
EA
RST