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9
ATSAM4C-EK [USER GUIDE]
11251A–ATARM–16-Dec-13
3.3
Function Blocks
3.3.1
Processor
The ATSAM4C-EK board is equipped with a SAM4C16 device in an LQFP100 package.
Figure 3-3.
SAM4C Processor
3.3.2
Clock Distribution
The ATSAM4C-EK board includes two clock systems (see
Table 3-1
and
Figure 3-4
).
Figure 3-4.
Clock System
ATMEL
Cortex-M4 Processor
SAM4C16CA-AU LQFP100
R1.R2 should close to SAM4C.
Do Not Populate
PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PA8
PA9
PA10
PA11
PA12
PA13
PA14
PA15
PA16
PA17
PA18
PA19
PA20
PA21
PA22
PA23
PA24
PA25
PA26
PA27
PA28
PA29
PB4
PB5
PB6
PB7
PB8
PB9
PB10
PB11
PB12
PB13
PB14
PB15
PB16
PB17
PB18
PB19
PB20
PB21
PB22
PB23
PB24
PB25
PB26
PB27
PB28
PB29
PB30
PB31
PC0
PC1
PC2
PC3
PC4
PC5
PC6
PC7
PC8
PB0
PB1
PB2
PB3
FWUP
PC9
JTAGSEL
SHDN
TST
NRST
XOUT32
XIN32
TMP0
PA31
PA30
XIN
XOUT
VDDIN
VDDOUT
VDDCORE
VDDPLL
VDDLCD
VDDIO
VDDBU
VDDREF
SHDN
{4}
FWUP
{7}
TMP0
{7}
R2
0R/DNP
R1 0R/DNP
MN1
PB6
1
PB7
2
PB18
3
GND_1
4
PB19
5
PB8
6
PB22
7
PB30
8
PB25
9
PB24
10
V
DDCORE
_1
11
PB29
12
PB9
13
PB10
14
PB11
15
PB12
16
PB14
17
PB15
18
PA2
6
19
PA2
5
20
PA2
4
21
PA2
0
22
PA1
9
23
PA1
8
24
PA8
25
TDI/PB0
26
TCK/SWCLK/PB3
27
TMS/SWDIO/PB2
28
ERASE/PC9
29
TDO/TRACESWO/PB1
30
PC1
31
PC6
32
V
DDI
O_1
33
VD
D
BU
34
FWUP
35
JTAGSEL
36
SHDN
37
TST
38
TMP0
39
XIN32
40
XOUT32
41
GND_2
42
PB4
43
V
DDCORE
_2
44
PB5
45
PC7
46
PC0
47
NRST
48
V
DDI
O_2
49
PA30/XOUT
50
PA31/XIN
51
GND_3
52
V
DDP
LL
53
PC8
54
PC5
55
PC4
56
PC3
57
PC2
58
PA2
9
59
PA2
8
60
PA2
7
61
PA6
62
V
DDCORE
_3
63
PA3
64
PA2
1
65
PA2
2
66
PA2
3
67
PA9
68
PA1
0
69
PA1
1
70
PA1
3
71
PA1
4
72
PA1
5
73
PA1
6
74
PA1
7
75
V
DDI
O_3
76
ADVREF
77
GND_4
78
PB31/AD5
79
PB23/AD4
80
PB13/AD3
81
PA5
/AD
2
82
PA4
/AD
1
83
PA1
2
/AD
0
84
VD
D
IN
85
VD
D
O
U
T
86
PB21
87
PB20
88
V
DDCORE
_4
89
PA0
90
PB27
91
V
DDLCD
92
PB26
93
PB28
94
PB16
95
PA1
96
PB17
97
PA7
98
V
DDI
O_4
99
PA2
100
Table 3-1.
Components Clock System
Qty
Description
Component Assignment
1
Crystal for Internal Clock 8 MHz
Y2
1
Crystal for RTC Clock 32.768 kHz
Y1
XOUT
XIN
C 20
18pF
Y2
8MHz
1
2
3
4
R9
0R
R6
0R
C 24
18pF
XIN32
XOUT32
RTC_32
{4}
R4
0R
Y1
32.768 kHz
C 19
18pF
R5
0R
C1
18pF
R3
0R_DNP
Do Not Populate
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