Schematics
UM18
79
2
6/4
U
M1
879
Re
v 4
Figure 11. ST-LINK/V2-1 with support of SWD only
2
10
ST-LINK/V2-1 with support of SWD only
MB1184
C-01
6/15/2015
Title:
Size:
Reference:
Date:
Sheet:
of
A4
Revision:
STM32L476G-DISCO
Project:
USB_DM
USB_DP
STM_RST
T_
JT
C
K
T_JTCK
T_JTMS
STM_JTMS
STM_JTCK
OSC_IN
OSC_OUT
T_
N
R
S
T
AIN_1
3V3_ST_LINK
3V3_ST_LINK
SW
IM
_
IN
USB_DM
USB_DP
USB
VCC
1
D-
2
D+
3
ID
4
GND
5
SHELL
6
CN1
USB-MINI-typeB
COM
ST-LINK Power
3V3_ST_LINK
Jumpers ON --> DISCOVERY Selected
Jumpers OFF --> ST-LINK Selected
Board Ident: PC13=0
T_JTCK
T_JTMS
SWD
3V3_ST_LINK
1
2
3
4
CN3
SB5
SB3
SB6
SB4
SB9
SB7
SB10
SB8
STM_JTMS
STM_JTCK
SWCLK
SWDIO
SWD
RESERV
ED
DEFAU
LT
3V3_ST_LINK
T_SWDIO_IN
T_SWO
LED_STLINK
LED_STLINK
3V3_ST_LINK
Red
_Green
2
1
3
4
LD1
LD_BICOLOR_CMS
SWDIO
SWCLK
TCK/SWCLK
TMS/SWDIO
Not Fitted
MCO
MCO
T_J
R
S
T
1
2
3
4
5
6
CN4
5075BMR-05-SM
AIN_1
T_NRST
T_SWO
NRST
T_NRST
SB11
RC Must be very close to STM32F103 pin 29
5
1
2
GND
3
4
BYPASS
INH
Vin
Vout
U1
LD3985M33R
D1
BAT60JFILM
TX
RX
SB16
SB13
USART_RX
USART_TX
Close to JP
Not Fitted
ST
L
IN
K
_
T
X
STLINK_RX
Not Fitted
LD2
LED, red
C7
100nF
C71
100nF
C6
100nF
C8
100nF
C5
1uF
C1
1uF
C2
100nF
C4
100nF
C3
10nF
C10
20pF
C11
20pF
C73
100nF
C72
20pF
1
2
X1
8MHz
3V3_ST_LINK
USB_RENUMn
PW
R
_
EXT
PWR_ENn
3V3_ST_LINK
3
1
2
T1
9013-SOT23
3V3_ST_LINK
USB_RENUMn
PA14
PA13
PWR_ENn
TP2
TP1
EN
1
GN
D
2
VO
4
NC
5
GN
D
7
VI
6
PG
3
U4
LD39050PU33R
C14
1uF
C15
100nF
C13
1uF
C12
100nF
3V3_ST_LINK
5 Volts Output
3 Volts Output
5 Volts From External
5V_IN
5V_IN
5 Volts From USB ST-LINK
JP4
3V3_ST_LINK
3V3_ST_LINK
VBAT
1
PA
7
17
PC13
2
PA12
33
PC14
3
PB0
18
PC15
4
JTMS/SWDIO
34
OSCIN
5
PB1
19
OSCOUT
6
VSS_2
35
NRST
7
P
B
2/
B
O
O
T
1
20
VSSA
8
VDD_2
36
VDDA
9
PB1
0
21
PA0
10
JT
C
K
/S
W
C
L
K
37
PA1
11
PB1
1
22
PA2
12
P
A
15/
JTD
I
38
PA
3
13
VS
S
_
1
23
PA
4
14
PB3
/J
T
D
O
39
PA
5
15
VDD
_
1
24
PA
6
16
PB4
/J
N
T
R
ST
40
PB12
25
PB5
41
PB13
26
PB6
42
PB14
27
PB7
43
PB15
28
BO
O
T
0
44
PA8
29
PB8
45
PA9
30
PB9
46
PA10
31
VS
S
_
3
47
PA11
32
VD
D_
3
48
U3
STM32F103CBT6
5V
D3
STPS1L30A
D2
STPS1L30A
JP1
5V_USB_ST_LINK
5V_USB_ST_LINK
MFX_USART3_RX
MFX_USART3_TX
SB17
SB15
D4
BAT60JFILM
Not Fitted
1
2
CR1
CR2032 Holder
IN
1
IN
2
ON
3
GND
4
SET
5
OUT
6
OUT
7
FAULT
8
U2
ST890CDR
5
1
2
GND
3
4
BYPASS
INH
Vin
Vout
U12 LD3985M25R
C47
1uF
C48
100nF
C49
10nF
C54
100nF
C55
1uF
2V5
5V
R11
10K_1%_0402
C9
100nF
1
2
3
JP6
D6
STPS1L30A
3V
3V3_REG
R18
4K7_1%_0402
R82
10K_1%_0402
R83
[NA]
R14
100K_1%_0402
R86
100K_1%_0402
R85
4K7_1%_0402
R84
4K7_1%_0402
R1
0_5%_0402
R79
100_1%_0402
R10
10K_1%_0402
R8
0_5%_0402
R9
0_5%_0402
R7
1K5_1%_0402
5V_USB_ST_LINK
R78
36K_1%_0402
R2
1K_1%_0402
R19
2K7_1%_0402
R80
100_1%_0402
R81
100_1%_0402
R17
22_1%_0402
R20
22_1%_0402
R21
22_1%_0402
R22
22_1%_0402
R13
[NA]
R12
10K_1%_0402
JP2
SWO
SB14
T_SWO
PB3
R33
4K7_1%_0402
3V3
3V3
3V3_REG
R4
330_1%_0402
R5
330_1%_0402
3V3_REG-ON
3V3_REG-ON
JP3
R15
[NA]
2.5 Volts Output
SB1
SB29
SB28
T_J
T
D
I
T_J
T
D
O
SWI
M
SWI
M
_
R
S
T
S
W
IM
_
R
S
T
_I
N
R6
100K_1%_0402
3V3_REG
SB12
R16
2K7_1%_0402
Ilim = 510mA
Isc= 1.2Ilim to 1.5Ilim = 612mA to 765mA
LD3
LED, red
R3
1K_1%_0402