El
ec
tri
ca
l s
ch
em
at
ic
s
S
T
M
32
F
4D
IS
C
O
VE
R
Y
36
/3
D
oc
ID
0
22
256
R
ev
2
Figur
e 1
6.
P
er
ip
h
er
als
STMicroelectronics
Title:
Number:
Rev:
Sheet of
B.2(PCB.SCH)
Date:
1/9/2012
1
2
LD5
Red
1
2
LD3
Orange
1
2
LD6
Blue
1
2
LD4
Green
R40
510
R36
680
R41
680
R42
680
PD12
MB997
6
6
STM32F4DISCOVERY Peripherals
LEDs
MEMS
LED4
C38
100nF
R39
220K
VDD
1
2
3
4
B1
SW
-P
U
S
H-
CMS
SB20
PA0
R35
330
R38
100
USER & WAKE-UP Button
NRST
NRST
RESET Button
C37
100nF
R37
100K
VDD
1
2
3
4
B2
SW
-P
U
S
H-
CMS
SB1
Not Fitted
PA0
PD12
LED3
LED5
LED6
PD13
PD14
PD15
PD13
PD14
PD15
PA5
PA7
PE0
3V
C39
100nF
SPI1_MOSI
SPI1_SCK
PA5
PA7
PE0
PE1
MEMS_INT1
MEMS_INT2
PE1
PA6
PE3
PE3
PA6
SPI1_MISO
CS_I2C/SPI
Not Fitted
VDD_IO
1
GND
2
Reserved
3
GND
4
GND
5
VDD
6
CS_I2C/SPI
7
INT1
8
INT2
9
GND
10
Reserved
11
SDO
12
SDA/SDI/SDO
13
SCL/SPC
14
U5
LIS302DL