Schematic

THEDATAWILLBETRANSFEREDTHROUGHUART.
WHENP0.30ISSHORTEDTOGROUND,
THEDATAWILLBETRANSFEREDTHROUGHBT.
P0.30ISPULLEDUPBYDEFAULT,THEN
P0.30ISUSEDFORDATACONFIGURATION
VCC_3V3
12P/50V/0402
VCC_3V3
BAT_AD
ECG_OP
VSS=GND;VDD=VCC_3V3;AVDD=VCC_3V3
100NF/50V/0402 100NF/50V/0402
1UF/25V/0603
VCC_3V3
NC
2G4_BT_ANTENNA
1.5PF/50V/0402
12P/50V/0402
2.2PF/50V/0402
P0.10
P0.09
10KR|J|0402
1NF/50V/0402
10KR|J|0402
12P/50V/0402
1UF/25V/0603
100NF/50V/0402
P0.29
P0.28
P0.16
P0.17
16MHZ
BTRXD
P0.20
LEADOFF
PDN
P0.04
CONF
FR
22R|J|0402
10KR|J|0402
22R|J|0402
VDD3V3
VDD3V3
BTTXD
P0.14
3.3NH/100MA/0402
10NH/100MA/0402
32.768KHZ
NRST
SWDCLK
ZCZ
VCC_3V3
VCC_3V3
VCC_3V3
100K|F|0402
10UF/25V/0603
10KR|J|0402
100K|F|0402
RLD
BL1860
100K|F|0402
VCC_3V3
1UF/25V/0603
LA
RED
1KR|J|0402
1UF/25V/0603
PJ-313E
10NF/50V/0402
RA
NRST
PDN
1UF/25V/0603
100K|F|0402
XH254-2P-W
VCC_5V
SI2302
SI2301
LTC4054ES5-4.2
2.2NF/50V/0402
1UF/25V/0603
VCC_5V
BAT_CHRG
MICROUSB_B_4DIP
CP2102
22R|J|0402
22R|J|0402
10UF/25V/0603 100NF/50V/0402
FR
10UF/25V/0603
2K|F|0402
BAT_AD
10KR|J|0402
ESD5Z5.0T1G/T5G ESD5Z5.0T1G/T5G ESD5Z5.0T1G/T5G
1KR|J|0402
1N5819
TPS736XXDBV
33
10NF/50V/0402
10UF/25V/0603
100K|F|0402
SOT23-5
P0.23
P0.22
P0.21
P0.00
P0.06
BTTXD
P0.15
12P/50V/0402
BAT_CHRG
P0.25
NRF51822-QFAA
10KR|J|0402
LEADOFF
10NF/50V/0402
100K|F|0402
ECG_OP
1UF/25V/0603
1NF/50V/0402
P0.13
P0.07
SWDCLK
NRST
P0.19
P0.18
47NF/50V/0402
1PF/50V/0402
4.7NH/100MA/0402
SMD_7P
CONF
BTRXD
GND SUSPENG#
SUSPEND
RST#
RI
DCD
DTR
DSR
CTS
RTS
TXD
RXD
VDD_3V3_OUT
VIN
D+
D-
VBUS
B
COM
A
XC2
XC1
VDD_PA
ANT1
ANT2
SWDIO/NRESET
SWDCLK
DEC2
DEC1
DCC
P0.30
P0.29
P0.28
P0.27
P0.26
P0.25
P0.24
P0.23
P0.22
P0.21
P0.20
P0.19
P0.18
P0.17
P0.16
P0.15
P0.14
P0.13
P0.12
P0.11
P0.10
P0.09
P0.08
P0.07
P0.06
P0.05
P0.04
P0.03
P0.02
P0.01
P0.00
1
LPSEL
GAINSEL
PDN
VREFSEL
FR
RLD
RLDFB
RA
LA
LEADOFF
4
3
2
1
XTAL2 XTAL1
1
2
1
OUT
NR/FB
EN
IN
G
G
PROG
BAT
CHRG#
8
7
6
5
4
3
2
1
1
1
1
1
1
GND
ID
D+
D-
VBUS
VCC_BAR VCC_BAR
VCC_BAR
VCC_BAR
VCC_BAR
VCC_BAR
VCC_BAR
VCC_BAR
VCC_BAR
VCC_BAR
VCC_BAR
NC
VSS
VDD
VREFIN
VDDA
LEADSEL
OUT LPIN HPSET PREOUT
1
GND
D
S
D
S
GND VCC
CA CA CA
X2
J4
C27
S1
R21
R20
C21
C23
C19
R19
U7
C20
L3
U6
J3
X1
U5
R12
J2
R7
Q2
D1
Q1
C2
U1
R11
R10U2
R3
R2
J1
tps736xxdbv
C28 C29
C26 C25
D2
R15
R16
D5 D4 D3
C17
C18
C24 C22
L2 L1
R18
C15 C16
C14 C13
C11 C9 C8 C7
R14
C12
C10
C6
R6
R1
C5
C3
R4
R8
R5
R9
C4 C1
1
4
3
21
5
4
1
3
8
7
6
5
4
3
2
1
1
1
21
2
1
1
1
2 1
2 1
21
21
21
1
2 1
121 21
14
4
5
3 13
11
1
2
12
15
4
3
2
1
31
38
37
30
23
24
3
48
47
46
45
44
43
42
41
40
28
27
26
25
22
21
20
19
18
17
16
15
14
11
10
9
8
7
6
5
29
39
2
32
31
21
1
2
1
21 1
CA
121
51
3
21
21
7
6
8
26
11
12
25
24
9
2
3
28
27
1
5
4
2321
21
1
4
5
2
3
PAGE:
DATE:TITLE:
ENGINEER:
A A
B B
C C
D
D
1
12
23
34
45
56
67
78
8
21 21
2
21 21
C A 21
21
CA CA CA
21
21
21 21
21 21
16 18 19 17
6
10
8 9
20
7
21
21 21
21 21
21 21 21 21
21
1
21
21
21
21
21
21
21 21
21
21
23
2 3
42
21
21 21
U3
TP8
TP7
TP4
TP6
TP5
TP3
TP2
TP1