DocID027213 Rev 1 23/35
UM1842 Hardware layout
34
PC3
SPI2_MOSI/I2S2_SD,
ADC1_13
18
AIN4x
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 - - - - - - - -
OSC32_IN
- - - - -9
PC15 OSC32_OUT 9 - - - - - - - -
OSC32_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
LQFP100
CS43L22
MP45DT02
L3GD20
LSM303DLHC
Pushbutton
LED
SWD
USB
OSC
Free I/O
Power supply
CN5
CN2
P1
P2