Atmel STK520, User Manual

Page: 19 / 25

Complete Schematics
6-19 STK520 User Guide
7510A–AVR–08/05
Figure 6-1. Schematics, 1 of 4
5 5
4 4
3 3
2 2
1 1
D
D
C
C
B
B
A
A
XT
1
XT
2
RE
F
PE0
PD
2
PB5
PC
3
PB6
PD
4
PB7
PD
6
PD
7
PC
5
PB[
7.
.0
]
PD
1
PB0
PC
4
PB1
PC
7
PD
3
PB4
PC
0
PC
6
PD
0
PB3
PD
5
PC
1
P
C
[7
..0
]
PC
2
PB2
P
D
[7
..0
]
PE1
PE2
PE[
2.
.0
]
RESET
PE2
PE[2
..0
]
PB[7
..0
]
PC[7..0] PD[7..0]
VT
G
VT
G
VT
G
VT
G
AREF
T
PE2 PE1 PE0
Title S
iz
e
Docum
ent
Num
ber
Rev
Dat
e:
S
heet
of
<
D
o
c>
1.
6.
0
PO
W
E
R & EX
PENSI
O
N
CO
NNECT
O
R
S
A
14
W
ednesday
, Novem
ber 10,
2004
Title S
iz
e
Docum
ent
Num
ber
Rev
Dat
e:
S
heet
of
<
D
o
c>
1.
6.
0
PO
W
E
R & EX
PENSI
O
N
CO
NNECT
O
R
S
A
14
W
ednesday
, Novem
ber 10,
2004
Title S
iz
e
Docum
ent
Num
ber
Rev
Dat
e:
S
heet
of
<
D
o
c>
1.
6.
0
PO
W
E
R & EX
PENSI
O
N
CO
NNECT
O
R
S
A
14
W
ednesday
, Novem
ber 10,
2004
ST
K520 MEZZA
NI
NE FOR ST
K500
Note : JP1 and JP3 are not mounted
PA0 is connected to PE2 for BSEL2 function.
1
2
JP1
XT
1
JP1
XT
1
CP2CP2
GND
1
GND
2
AU
XI
1
3
AU
XO
1
4
DA
T
A
7
5
DA
T
A
6
6
DA
T
A
5
7
DA
T
A
4
8
DA
T
A
3
9
DA
T
A
0
10
DA
T
A
1
11
DA
T
A
9
12
SI
13
SO
14
SC
K
15
CS
16
XT
1
17
XT
2
18
VT
G
19
VT
G
20
GND
21
GND
22
PB7
23
PB6
24
PB5
25
PB4
26
PB3
27
PB2
28
PB1
29
PB0
30
PD
7
31
PD
6
32
PD
5
33
PD
4
34
PD
3
35
PD
2
36
PD
1
37
PD
0
38
GND
39
GND
40
CON 2x
20
J1
EXP.
CON 1
CON 2x
20
J1
EXP.
CON 1
Q1 B
C
847B
Q1 B
C
847B
1
2
JP2
XT
2
JP2
XT
2
C3
100nF
C3
100nF
1
2
JP3
RESET
JP3
RESET
R2 10K R2 10K
C2
1nF
C2
1nF
CP1CP1
C1
100nF
C1
100nF
GND
1
GND
2
AU
XI
0
3
AU
XO
0
4
CT
7
5
CT
6
6
CT
5
7
CT
4
8
CT
3
9
CT
2
10
CT
1
11
BSEL
2
12
(n
.c
.)
13
RE
F
14
NRS
T
15
PE2
16
PE1
17
PE0
18
GND
19
GND
20
VT
G
21
VT
G
22
PC
7
23
PC
6
24
PC
5
25
PC
4
26
PC
3
27
PC
2
28
PC
1
29
PC
0
30
PA7
31
PA6
32
PA5
33
PA4
34
PA3
35
PA2
36
PA1
37
PA0
38
GND
39
GND
40
CON 2
x
2
0
J2
EXP.
CON 0
CON 2
x
2
0
J2
EXP.
CON 0
R1 2K R1 2K