ST STEVAL-STWINBX1 - Figure 41. Core System Board Circuit Schematic (8 of 8)

Figure 41. Core system board circuit schematic (8 of 8)
PB13
PF0
PH4
If closed, ST25DV
is in Low Power Mode
VBat
Inductor on TOP
VBat
DCDC_1
DCDC_1
DCDC_1
DCDC_1
DCDC_1
DCDC_1
NFC_INT
I2C2_S CL
I2C2_S DA
BUTTON_P WR
TVS4
1
USBULC6-2M6
IO1A
4 3
IO2B IO2A
5
VBUS
GND
2
6
IO1B
R34
100k
R32
4.7k
NUSB45
2
GND2
3
GND
1
FEED
S B46 0R
micro U.FL
connector
A1 U.FL connector
R36
100k
C83
10nF
C77
10nF
S B47 0R
R35
100
R40
100k
C76
10nF
L4 470uH
U24
1
LP D
S T25DV64K-JFR6D3
2
NC#1
3
V_EH
AC0
4
AC1
5
VS S
6
7
SDA
8
SCL
9
NC#2
VDCG
VCC
10
GP O
11
12
EXP
13
p
Q3
3
1
2
DMP210DUFB4
n
Q2
3
1
2
DMN32D2LFB4
AC0
AC1
AC1AC1
AC0
AC0
AC1
AC0
AC0 AC1
UM2965 - Rev 1
page 42/58
UM2965
Schematic diagrams