Schematics

VDDIO
1
VBAT
2
LDO_IN/PB5
3
BT_AVDD
4
PB3/ADC6
5
PB1/ADC5
6
BT_RF
7
VSSIO
8
BT_OSCI
9
BT_OSCO
10
ADC14/USBDM
11
MIC_BIAS/PA2/PA3/USBDP
12
DACR
13
DACL
14
DACVSS
15
ADC1/MIC/PA1
16
U1
AC6969
C4 105
GND
C5 105
C2 222
C3 105LED1
LED2
+3.3V
GND
Y1
24M
GND
BT_OSCO
BT_OSCI
GND
L2
1.8nH
L1
NC
BT_ANT1
ANT
GND
S1
GND
AGND
1
1
2
2
MIC
DACL
DACR
C1 2.7pF
VCC
2.7R
R1
LDOIN
LDOIN
+3.3V
VBAT
BT_AVDD
MIC
USBDP
USBDM
C6
NC
VBAT
3.4V~4.2V
VBAT
GND AGND
PIBT0ANT101PIBT0ANT102
COBT0ANT1
PIC101PIC102
COC1
PIC201PIC202
COC2
PIC301PIC302
COC3
PIC401PIC402
COC4
PIC501PIC502
COC5
PIC601 PIC602
COC6
PIL101
PIL102
COL1
PIL201
PIL202
COL2
PILED101
PILED102
COLED1
PILED201
PILED202
COLED2
PIMIC01
PIMIC02
COMIC
PIR101 PIR102
COR1
PIS101 PIS102
COS1
PIU101
PIU102
PIU103
PIU104
PIU105
PIU106
PIU107
PIU108 PIU109
PIU1010
PIU1011
PIU1012
PIU1013
PIU1014
PIU1015
PIU1016
COU1
PIVBAT01
PIVBAT02
COVBAT
PIY101
PIY102
PIY103
PIY104
COY1
PIC401
PILED101
PIU101
NL0303V
PIC301 PIU104
NLBT0AVDD
PIU109
PIY101
NLBT0OSCI
PIU1010
PIY103
NLBT0OSCO
PIU1014
NLDACL
PIU1013
NLDACR
PIBT0ANT102
PIC202
PIC302
PIC402
PIC502
PIC601
PIL101PIL201
PILED202
PIMIC02
PIS101
PIU108
PIU1015
PIVBAT02
PIY102
PIY104
PIC201
PIR101
PIU103
NLLDOIN
PIC602
PIMIC01
PIU1016
NLMIC
PIBT0ANT101
PIC102
PIL202
PIC101
PIL102
PIU107
PILED102
PILED201
PIU105
PIS102 PIU106
PIVBAT01
PIU1011
NLUSBDM
PIU1012
NLUSBDP
PIC501 PIU102
NLVBAT
PIR102