单片机最小系统设计图
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XTAL2
18
XTAL119ALE 30EA
31
PSEN 29RST
9
P0.0/AD039P0.1/AD138P0.2/AD237P0.3/AD336P0.4/AD435P0.5/AD534P0.6/AD633P0.7/AD732P1.0/T21P1.1/T2EX 2P1.23P1.34P1.45P1.56P1.67P1.78
P3.0/RXD 10P3.1/TXD 11P3.2/INT012P3.3/INT113P3.4/T014P3.7/RD
17
P3.6/WR 16P3.5/T115P2.7/A1528P2.0/A821P2.1/A922P2.2/A1023P2.3/A1124P2.4/A1225P2.5/A1326P2.6/A1427U1
AT89C52
+5V
1
2
X1
CRYSTAL
C1
10uF
R1
10k
C2
22pf
C3
22pf +5V
D1
LED
D2
LED
D3
LED
D4
LED
D5
LED
D6
LED
D7
LED
D8
LED
R2
2k
R3
2k
R4
2k
R5
2k
R6
2k
R7
2k
R8
2k
R9
2k
+5V
XTAL2
18
XTAL119ALE 30EA
31
PSEN 29RST
9
P0.0/AD039P0.1/AD138P0.2/AD237P0.3/AD336P0.4/AD435P0.5/AD534P0.6/AD633P0.7/AD732P1.0/T21P1.1/T2EX
2P1.23P1.34P1.45P1.56P1.67P1.7
8
P3.0/RXD 10P3.1/TXD 11P3.2/INT012P3.3/INT113P3.4/T014P3.7/RD 17
P3.6/WR 16P3.5/T115P2.7/A1528P2.0/A821P2.1/A922P2.2/A1023P2.3/A1124P2.4/A1225P2.5/A1326P2.6/A1427U2
AT89C52
+5V