Schematics

1
1
2
2
3
3
4
4
5
5
6
6
D D
C C
B B
A A
1 1
Transmitter (PCB 100323)
060018 G
C:\Users\sasani\Documents\GitHub\EngineeringProjects\Millstone\600075 Millstone\600047 Transmitter BD\Design Files\060018 Transmitter Rev G.schdoc
Title
Size: Number:
Date:
File:
Revision:
Sheet of
B
29401 Ambina Dr.
Solon OH, 44139
DRAWN BY:
6/11/2021
CS
2
SDA/SDI/SDO
4
SCL/SPC
1
SDO/SA0
3
GND
6
GND
7
GND
8
RES
5
VDD
9
VDD-IO
10
INT2
11
INT1
12
U2
LIS2HH12TR
GND
INT1 INT2
GND
I2C-SDA
I2C-SCK
R1
4.7KR2
4.7K
VCC
VCC
BT1
Battery
GND
GND
VCC
GND
C18
10uF
C19
0.1uF
VCC
GND
VCC
VCC
I2C-SCK
I2C-SDA
SWDCLK
SWDIO
RESET
D2
D TVS
GND
R4
10K
S1
VCC
GND
1
2
3
4
P1
Header 4
VCC
R3
100K
GND
C20
0.1uF
MILLSTONE
ANT
C21
1.0 pF
X2
32.768kHz
C16
12pF
C17
12pF
X1
32MHz
C1
12pF
C2
12pF
C11
100pF
C14
1.0µF
C5
100nF
XC1
XC2
VDD_nRF
P0.07
P0.10/NFC2
P0.11
P0.12
P0.19 P0.20
P1.10
DEC1
P0.28/AIN4
SWDCLK
SWDIO
C15
1.0µF
P1.09
C3
0.8pF
L1
3.3nH
C10
N.C.
P0.00/XL1
P0.01/XL2
P0.02/AIN0
DEC1
C1
VDD
W1
VSS_PA
F23
ANT
H23
DEC2
E24
DEC3
D23
XC1
B24
XC2
A23
VDD
A22
P1.10
A20
P0.00/XL1
D2
P0.01/XL2
F2
P0.28/AIN4
B11
DEC4
B5
VSS
B7
VDD
B1
DCC
B3
SWDCLK
AA24
SWDIO
AC24
P1.01
Y23
D-
AD4
P0.19
AC15
nRF52840-QIAA
VDDH
Y2
DCCH
AB2
VBUS
AD2
DEC3V3
AC5
D+
AD6
P0.20
AD16
P0.21
AC17
P0.22
AD18
P0.23
AC19
P0.24
AD20
VDD
AD23
P0.09/NFC1
L24
P1.09
R1
P0.25
AC21
P1.00
AD22
P0.26
G1
P0.27
H2
P0.04/AIN2
J1
P0.05/AIN3
K2
P0.06
L1
P0.07
M2
P0.08
N1
P1.08
P2
P0.13
AD8
P0.14
AC9
P0.15
AD10
P0.16
AC11
P0.11
T2
P0.12
U1
P0.17
AD12
P0.18/RESET
AC13
DEC5
N24
P0.10/NFC2
J24
P0.03/AIN1
B13
P0.02/AIN0
A12
P0.29/AIN5
A10
P0.30/AIN6
B9
P0.31/AIN7
A8
VDD
AD14
P1.02
W24
P1.03
V23
P1.04
U24
P1.05
T23
P1.06
R24
P1.07
P23
P1.11
B19
P1.12
B17
P1.13
A16
P1.14
B15
P1.15
A14
DEC2
A18
U1
nRF52840-QIAA
VDD_nRF
DEC3
P0.04/AIN2
P0.09/NFC1
DEC4
DEC2
P1.11 P1.12 P1.13 P1.14
VDD_nRF
C7
100nF
D_P D_N
VDD_nRF
C8
100nF
C9
820pF
C6
4.7µF
P1.01
P1.02
P1.03
P1.04
P1.05
P1.06
P1.07
P1.15 P0.29/AIN5 P0.30/AIN6 P0.31/AIN7
P0.08
P1.08
P0.06
P0.25 P0.17
C12
100nF
VDD_nRF
C13
N.C.
C4
0.5pF
FED
RESET
VDD_nRFVCC
Rev C: change the value of C21
1
2
3
U3
C22
1.0µF
GND
VCC
Magnetic Circuit