1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
15
15
16
16
17
17
K
K
J
J
I
I
H
H
G
G
F
F
E
E
D
D
C
C
B
B
A
A
Bluetooth
Section:
Product(s):
BluetoothBM20.SchDoc
P1640
1
19
Sheet
Of
PCB#:
Rev#:
Modified:
V01
File:
2018-08-22
EXM-Mobile
EML Rev#:
01
Tmp Rev:
V031
13.5X26mm SMT Module
BM20
8284
P1_5
5
P0_4
6
SPKR
7
AOHPM
8
SPKL
9
VDDA
10
MIC1_P
11
MIC1_N
12
MIC_BIAS
13
AIR
14
G
N
D
2
3
A
D
A
P
_
IN
2
0
V
D
D
_
IO
1
9
MFB
26
LED1
27
LED2
28
P2_4
29
P0_2
30
P0_3
31
B
A
T
_
IN
2
1
R
S
T
1
6
N
C
2
2
SYS_PWR
24
BK_OUT
25
P
0
_
1
1
8
V
C
C
_
R
F
1
7
P2_0
4
P3_0
3
HCI_TXD
32
HCI_RXD
33
P0_0
1
A
IL
1
5
GND
37
EAN
2
P0_5
34
P2_7
35
P2_4
36
U17
W
1
0
0
10K0
0805
R228
BT_Audio_
BT_Blu_LED
63V
470N
RAD .2in
C138
16V
10U
1206
C136
1
2
3
4
5
6
W5
Program
BT_Enable_
Tag_Connect - UART PCB connections - W5
10 - 5v In - 3
9,7,3 - RX - 5
1 - BT_GND - 1
2 - P0_0 - 2
4 - P2_4 - 4
6 - TX - 6
+5v_BT
BTGnd
BT_AGnd_
BT_AGnd_
UART_RX
UART_TX
+5VBT
BT_Gnd
+5VBT
BT_Gnd
G
N
D
1
RST
3
VCC
2
SOT-23
TCM809S
7985
Q17
BT_SysPwr_
W
1
0
0
100K0
0805
R215
8
8
W6_:8
8
5
W6_:5
8
3
W6_:3
8
4
W6_:4
8
7
W6_:7
8
1
W6_:1
8
2
W6_:2
3
2
1
-
+
SO8
TL072
7669
U1:1
W100
10K0
0805
R87
0603
50V
470P
C41
W125
47K5
0805
R115
SOT23
MMBT3906LT1
7805
Q10
SOT23
BC847C
Q16
8074
W100
15K0
0805
R119
W125
10R0
0805
R4
SOT-23
J110
S
D
Q9
W
1
2
5
8K25
0805
R118
5
6
7
-
+
SO8
TL072
7669
U1:2
V+
8
V-
4
U1:3
W100
10K0
0805
R100
W100
10K0
0805
R80
0603
50V
470P
C42
W100
10K0
0805
R114
W100
4K99
0805
R95
W100
475K
0805
R113
W100
4K99
0805
R117
W100
15K0
0805
R116
+VBT
PMLL4148
SOD80
D8
PMLL4148
SOD80
D7
5
0
V
1
U
1206
C147
+VBT
5
0
V
1
U
1206
C153
8
6
W6_:6
BT_+V_
1
3
4
6
7
2
5
8
_W6_
BT_AUDIO_
BT_AGND_
+VBT
BTGND
+5V_BT
BT_ENABLE_
BT_SYSPWR_
BT_BLU_LED
63V
470N
RAD .2in
C126
W
1
2
5
10R0
0805
R166
RAD
470U
6V3
C178
1000UH
8091
L7
1000UH
8091
L9
W100
475R0
0805
R269
0805
5
0
V
1
0
0
N
C174
0805
50V
100N
C173
Legend
Battery -
System Gnd
-12V
SG
AI-ASSY3
