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Atmel AT89STK-06 Guía de usuario Pagina 35

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Schematics
4-34 AT89STK-03 Hardware User Guide
7609B–SCR–11/06
Figure 4-7. C51 Generic Bus
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
V D D
V D D
TXD
P3.3
P3.4
P3.6
P3.7
RXD
R E S ET
EA
XTAL2 P S E N
ALE
G E N _ P S
P5.0
P5.1
P5.2
P5.4
P5.6
P5.7
P5.0
P5.1
P5.4
P4.2
C I O1
P5.3
P5.5
P5.3
P5.6
P5.5
P5.7
P0.5
P0.7
P4.4
P2.5
P4.2
P4.1
P2.1
P0.2
P2.7
P4.7
P4.6
P2.2
P0.0
P2.6
P0.6
P2.3
P4.5
P2.0
P2.4
P4.3
P4.0
P0.3
P0.1
P0.4
P4.3
P5.2
V D D
P1.6
C R S T 1
C I O1
P1.6
P3.3 C R S T 1
C C L K 1
C P R E S
XTAL1
L E D 2
L E D 3
P4.5
L E D 6
RXD
TXD
P3.3
P3.4
P3.7
T itle
S ize D o c u m e n t N u m ber R e v
D a t e: S h eet
o f
A T 8 X C 5 1 2 2_DEMOB 1 . 2 .0
C 5 1 _ G E N E R I C BUS
A4
7 7F r i d a y , J u l y 2 5 , 2003
J4
G e n e r i c B o a r d L e f t C onnector
P5.7
2
P5.6
4
P5.5
6
P5.4
8
P5.3
10
P5.2
12
P5.1
14
P5.0
16
P3.7
18
P3.6
20
P3.5
22
P3.4
24
P3.3
26
P3.2
28
P3.1
30
P3.0
32
P1.7
34
P1.6
36
P1.5
38
P1.4
40
P1.3
42
P1.2
44
P1.1
46
P1.0
48
Vss
1
Vss
3
/Buzzer
5
Spare7
7
Spare6
9
Spare5
11
Spare4
13
Spare3
15
Spare2
17
Spare1
19
Spare0
21
Vss
23
Xtal2
25
Vss
27
CS_RAM
29
A16
31
/BP1
33
/EA
35
/RST
37
/TWI_INT
39
TWI_scl
41
TWI_sda
43
Vss
45
Vcc_CPU
47
S W6
BP1
2
2
1
1
R18
4 . 7 K
S W 4 1 I S P F
2
2
1
1
R19
4 . 7 K
S W 3 7
B U Z Z E R
2
2
1
1
S W 3 0
T WI
2
2
1
1
S W 3 8
T W I _ I N T
2
2
1
1
J5
G e n e r i c B o a r d R i g h t Connector
Vss
2
Vss
4
Keyb.7
6
Keyb.6
8
Keyb.5
10
Keyb.4
12
Keyb.3
14
Keyb.2
16
Keyb.1
18
Keyb.0
20
ALE
22
Vss
24
/PSEN
26
Spare8
28
Spare9
30
Spare10
32
Spare11
34
Spare12
36
/ISP_F
38
CS_F
40
Gen_detect
42
Vss
44
4.35_12V
46
4.35_12V
48
P4.7
1
P4.6
3
P4.5
5
P4.4
7
P4.3
9
P4.2
11
P4.1
13
P4.0
15
P2.7
17
P2.6
19
P2.5
21
P2.4
23
P2.3
25
P2.2
27
P2.1
29
P2.0
31
P0.7
33
P0.6
35
P0.5
37
P0.4
39
P0.3
41
P0.2
43
P0.1
45
P0.0
47
S W 3 1
T WI
2
2
1
1
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