1 2 3 4 5 6
A
B
C
D
654321
D
C
B
A
Title
Number RevisionSize
B
Date: 23-Jun-2009 Sheet of
File: F:\hardware\电路\转换器\转换器.Ddb Drawn By:
GND
31
PD5/OC1A
19
PD4/OC1B
18
RESET
9
PD3/INT1
17
PD2/INT0
16
XTAL2
12
XTAL1
13
PD0/RXD
14
PD1/TXD
15
PB0/T0/XCK
1
PB1/T1
2
PB2/INT2/AIN0
3
PB3/INT3/OC0
4
PB4/SS
5
PB5/MOSI
6
PB6/MISO
7
PB7/CLK
8
PA1/ADC1
39
PA2/ADC2
38
PA3/ADC3
37
PA4/ADC4
36
PA5/ADC5
35
PA6/ADC6
34
PA7/ADC7
33
AREF
32
PD7/OC2
21
PC0/SCL
22
PC1/SDA
23
PC2/TCK
24
PC3/TMS
25
PC4/TDO
26
PC5/TDI
27
PC6/TOSC1
28
PC7/TOSC2
29
AVCC
30
GND
11
VCC
10
PA0/ADC0
40
PD6/ICP1
20
U1
ATMEGA16
EA/VP
31
XTAL1
19
XTAL2
18
RESET
9
P37/RD
17
P36/WR
16
P32/INT0
12
P33/INT1
13
P34/T0
14
P35/T1
15
P10/T2
1
P11/T2 EX
2
P12
3
P13
4
P14
5
P15/MOSI
6
P16/MISO
7
P17/CLK
8
P00
39
P01
38
P02
37
P03
36
P04
35
P05
34
P06
33
P07
32
P20
21
P21
22
P22
23
P23
24
P24
25
P25
26
P26
27
P27
28
PSEN
29
ALE/PROG
30
P31/TXD
11
P30/RXD
10
VCC
40
GND
20
U2
AT89S52
+5
+5
+5
P00
P01
P02
P03
P04
P05
P06
P07
P01
P02
P03
P04
P05
P06
P07
P00
P20
P21
P22
P23
P24
P25
P26
P27
P20
P21
P22
P23
P24
P25
P26
P27
P10
P11
P12
P13
P14
P15
P16
P17
P10
P11
P12
P13
P14
P15
P16
P17
rst rst
P30
P31
P32
P33
P34
P35
P36
P37
P30
P31
P32
P33
P34
P35
P36 P37
X1
X2
X1
X2
+5