Datasheet

DVCC1
1
P6.3/A3
2
P6.4/A4
3
P6.5/A5
4
P6.6/A6
5
P6.7/A7/SVSIN
6
VREF+
7
XIN
8
XOUT
9
VeREF+
10
VREF-/VeREF-
11
P1.0/TA0
87
P1.1/TA0/MCLK
86
P1.2/TA1
85
P1.3/TBOUTH/SVSOUT
84
P1.4/TBCLK/SMCLK
83
P1.5/TACLK/ACLK
82
P1.6/CA0
81
P1.7/CA1
80
P2.0/TA2
79
P2.1/TB0
78
P2.2/TB1
77
P2.3/TB2
76
P2.4/UTXD0
75
P2.5/URXD0
74
P2.6/CAOUT
73
P2.7/ADC12CLK
72
P3.0/STE0
71
P3.1/SIMO0
70
P3.2/SOMI0
69
P3.3/UCLK0
68
P3.4/TB3
67
P3.5/TB4
66
P3.6/TB5
65
P3.7/TB6
64
P4.0/UTXD1
63
P4.1/URXD1
62
P4.2/STE1/S39
51
P4.3/SIMO1/S38
50
P4.4/SOMI1/S37
49
P4.5/UCLK1/S36
48
P4.6/S35
47
P4.7/S34
46
P5.0/S1
13
P5.1/S0
12
P5.2/COM1
53
P5.3/COM2
54
P5.4/COM3
55
P5.5/R13
57
P5.6/R23
58
P5.7/R33
59
XT2OUT
88
XT2IN
89
TDO/TDI
90
TDI/TCLK
91
TMS
92
TCK
93
RST/NMI
94
P6.0/A0
95
P6.1/A1
96
P6.2/A2
97
AVSS
98
DVSS1
99
AVCC
100
S2
14
S3
15
S4
16
S5
17
S6
18
S7
19
S8
20
S9
21
S10
22
S11
23
S12
24
S13
25
S14
26
S15
27
S16
28
S17
29
S18
30
S19
31
S20
32
S21
33
S22
34
S23
35
S24
36
S25
37
S26
38
S27
39
S28
40
S29
41
S30
42
S31
43
S32
44
S33
45
COM0
52
R03
56
DVCC2
60
DVSS2
61
U5
MSP430F449IPZ
R19
221K
R20
221K
R21
221K
C13
0.01uF
C14
0.01uF
C15
0.01uF
+3.3VD
R22
200K
SW2
RANGE
SW3
TARE
SW4
CAL
SW5
CONFIG
+3.3VD
R7
10K
R8
10K
R9
10K
R10
10K
R12 100 R13
100
C25
2.2uF
+3.3VD
2
4
6
1
3
5
78
910
1112
1314
J3
HEADER-7X2
+3.3VD
SW6
RESET
+3.3VD
36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19
18 17 16 15 14 13 12 11 10
9 8 7 6 5 4 3 2 1
LCD1
LCD_DISPLAY
TDO/TDI
TDI/CLK
TMS
TCK
RST
BSLRX
BSLTX
MCURX
MCUTX
DOUT
SCLK
SPEED PDWN
COM(3)
COM(2)
COM(1)
COM(0)
S(39)
COM(3)
COM(2) COM(1)
COM(0)
S(38)
S(37)
S(36)
S(35)
S(34)
S(33)
S(32)
S(31)
S(30)
S(29)
S(28)
S(27)
S(26)
S(25)
S(24)
S(23)
S(22)
S(21)
S(20)
S(19)
S(18)
S(17)
S(16)
S(15)
S(14)
S(36)
S(35)
S(34)
S(33)
S(32)
S(31)
S(30)
S(29)
S(28)
S(27)
S(26)
S(25)
S(24)
S(23)
S(22)
S(21)
S(20)
S(19)
S(18)
S(17)
S(16)
S(15)
S(14)
S(5)
S(6)
S(7)
S(8)
S(9)
S(10)
S(11)
S(12)
S(13)
S(5)
S(6)
S(7)
S(8)
S(9)
S(10)
S(11)
S(12)
S(13)
C5
0.01uF
C23
2.2uF
C24
2.2uF
SW8
NKK_SS12SDP2
R16
10K
+3.3VD
R18
47K
DOUT
TP18
MCURX
TP8
MCUTX
SIMO0
TP7
DNP
RST
TCK
X2
EPS_C-002RX 32.7680K-A:PBFREE
TP5
P1.4/SMCLK
VCC
1
D-
2
D+
3
GND
4
J1
USB SLAVE CONN
CTS
13
DCD
15
DSR
14
DTR
21
RTS
20
SIN/IR_SIN
17
SOUT/IR_SOUT
19
SDA
10
SCL
11
X2
26
X1/CLKI
27
CLKOUT
22
PUR
5
DP
6
DM
7
RESET
9
GND
8
GND
18
GND
28
SUSPEND
2
VREGEN
1
RI/CP
16
WAKEUP
12
TEST1
24
TEST0
23
P3.0
32
P3.1
31
P3.3
30
P3.4
29
VCC
25
VCC
3
VDD
4
U4
TUSB3410VF
R2
33
R3
33
R1
1.5K
C16
22pF
C17
22pF
X1
12MHz
C1
22pF
C2
22pF
C22
1uF
USB3.3V
USB3.3VUSB5V
R6
10K
C18
10uF
D2
GREEN
R11
220
L1
FERRITE BEAD
TP1
USB_CLK
R4
10K
R5
10K
C37
MUR_NFM21PC105F1C3D
SW1
USB RESET
TP2
3.3V_USB
RX
TX
RTS
DTR
C3
4.7uF
R17
20
FB/SENSE
1
RESET
2
EN
3
GND
4
IN
5
IN
6
OUT
7
OUT
8
U3
TPS77133DGK
2 4
5
3
U10
SN74LVC1G04DBV
2 4
5
3
U7
SN74LVC1G04DBV
USB3.3V
USB3.3V
USB3.3V
USB3.3V
USB3.3V +3.3VD
+3.3VD
MCURX
MCUTX
TP16
RX
TP17
TX
VCC1
1
IN
2
VCC1
3
GND1
4
GND2
5
OUT
6
GND2
7
VCC2
8
U8
ISO721D
VCC1
1
IN
2
VCC1
3
GND1
4
GND2
5
OUT
6
GND2
7
VCC2
8
U9
ISO721D
C10
1uF
PROGRAMMING MODE
RST
TCK
+5V
USB5V+5VA
C12
0.1uF
C21
0.1uF
C33
0.1uF
C34
0.1uF
C35
0.1uF
C36
0.1uF
SW9
ESW_EG4208
Schematics www.ti.com
Figure 14. ADS1x31REF Schematic—MCU
Figure 15. ADS1x31REF Schematic—USB
28
Schematic and Layout SBAU175A–July 2010–Revised August 2011
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