
DocID027213 Rev 1
23/35
UM1842
Hardware layout
34
PC3
SPI2_MOSI/I2S2_SD,
ADC1_13
18
AI
N4
x
PDM_OUT
-
-
-
-
-
-
-
-
-
-
-
9
-
PC4
ADC1_14
33
-
-
-
-
-
-
-
-
-
-
-
-
-
20
-
PC5
ADC1_15
34
-
-
-
-
-
-
-
-
-
-
-
-
-
19
-
PC6
TIM3_CH1, I2S2_MCK,
USART6_TX, SDIO_D6
63
-
-
-
-
-
-
-
-
-
-
-
-
-
-
47
PC7
TIM3_CH2, I2S3_MCK,
USART6_RX, SDIO_D7
64
MCLK
-
-
-
-
-
-
-
-
-
-
-
-
-
48
PC8
MCO_CPUCK,
TIM3_CH3,
USART6_CK, SDIO_D0
65
-
-
-
-
-
-
-
-
-
-
-
-
-
-
45
PC9
MCO_2, TIM3_CH4,
I2C3_SDA, I2S2_CKIN,
SDIO_D1
66
-
-
-
-
-
-
-
-
-
-
-
-
-
-
46
PC10
I2S3ext_CK,
SPI3_SCK/I2S3_CK,
SDIO_D2
78
SCLK
-
-
-
-
-
-
-
-
-
-
-
-
-
37
PC11
I2S3ext_SD,
SPI3_MISO, SDIO_D3
79
-
-
-
-
-
-
-
-
-
-
-
-
-
38
PC12
I2S3ext_MISO,
SPI3_MOSI/I2S3_SD,
SDIO_CK
80
SDIN
-
-
-
-
-
-
-
-
-
-
-
-
-
35
PC13
TAMP_1
7
-
-
-
-
-
-
-
-
-
-
-
-
-
-
12
PC14
OSC32_IN
8
-
-
-
-
-
-
-
-
OSC3
2_IN
-
-
-
-
-
9
PC15
OSC32_OUT
9
-
-
-
-
-
-
-
-
OSC
32_OUT
-
-
-
-
-
10
PD0
-
81
-
-
-
-
-
-
-
-
-
-
-
-
-
-
36
Table 5. MCU pin description versus board function (page 5 of 8)
(1)
(continued)
MCU pin
Board function
Main
function
Alternate
functions
LQ
FP1
0
0
CS4
3
L2
2
MP45DT
02
L3G
D
20
LSM303
DLHC
P
u
shbutton
LED
SWD
USB
OSC
F
ree I
/O
Power supply
CN5
CN2
P1
P2