Specifications

CAHIER TECHNIQUE
PROFESSEUR : ERIC VANDAL SCHÉMA DE LA PLAQUE DE COMMUNICATION
UART
PAGE 1 SUR 2
S
S
C
C
H
H
É
É
M
M
A
A
D
D
E
E
L
L
A
A
P
P
L
L
A
A
Q
Q
U
U
E
E
D
D
E
E
C
C
O
O
M
M
M
M
U
U
N
N
I
I
C
C
A
A
T
T
I
I
O
O
N
N
U
U
A
A
R
R
T
T
P. Test Horloge
Circuit d'horloge du UART
12
D6
12
D5
12
D4
12
D2
12
D1
12
D3
+V
1
Vcc1
5V
1 2 3 4 5 6 7 8 9
10
Sip6
330
1
1 12
+
C9
15uF
12
+
C6
15uF
1
1
+V
1
V1
5V
12
+
C5
0.1uF
1 2
+
C4
15nF
1
CLK Ext
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
J4
1
+V
1
Vcc3
5V
1 1
+V
1
Vcc4
5V
+V
1
Vcc5
5V
10
S
12
D
11
CP
13
R
8
Q
_
9
Q
U4B
4
S
2
D
3
CP
1
R
6
Q
_
5
Q
U4A
9 8
U2D
11 10
U2E
1 2
C7
33pF
1 2
C8
33pF
1 2
XTAL2
4.9152MHZ
74393
7
GND
14
Vcc
3
1QA
4
1QB
5
1QC
6
1QD
8
2QD
10
2QB
11
2QA
9
2QC
2
1CLR
1
1A
13
2A
12
2CLR
U5
1
2
J5
1
12
DSw1
12
12
12
12
12
12
12
1 2 3 4 5 6 7 8 9
10
Sip5 10k
1
12
12 12 12 12
12
12 12
DSw2
12
+
C10
15uF
1
1
+V
1
Vcc2
5V
6402
1
VCC
3
GND
13
PE
14
FE
15
OE
19
DR
20
RRI
12
RBR1
11
RBR2
10
RBR3
9
RBR4
8
RBR5
7
RBR6
6
RBR7
5
RBR8
4
RRD
16
SFD
17
RRC
18
DRR
26
TBR1
27
TBR2
28
TBR3
29
TBR4
30
TBR5
31
TBR6
32
TBR7
33
TBR8
40
TRC
35
PI
36
SBS
37
CLS2
38
CLS1
39
EPE
25
TRO
34
CRL
21
MR
23
TBRL
22
TBRE
24
TRE
U3
1
B25/PA0
1
B24/PA1
1
B22/PA3
1
A4/INT
1
B23/PA2
1 2
U2A
1
D4/PB3
1
D5/PB4
1
D6/PB5
1
D7/PB6
1
D8/PB7
1
D3/PB2
1
D2/PB1
1
D1/PB0
1
B2/RESET
1
D17
1
D18
74ls123
1
1A
2
1B
3
1CLR
8
GND
12
2Q
13
1Q
16
Vcc
15
1RC
14
1C
6
2C
7
2RC
4
1Q
11
2CLR
10
2B
9
2A
5
2Q
U6
1 2
R2
10k
1 2
R3
51
1 2
R4
10M