Table 24. ARDUINO
®
connector pinout
Connector
Pin
number
Pin name Signal name
STM32U5
pin
Function
CN17
1 NC - - -
2 IOREF - - 3.3 V reference
3 NRST NRST NRST Reset
4 3V3 - - 3.3 V I/O
5 5V - - 5 V
6 GND - - GND
7 GND - - GND
8 VIN - - Power input
CN16
1 A0 ARD_ADC_A0 PC0 ADC
2 A1 ARD-ADC_A1 PC2 ADC
3 A2 ARD-ADC_A2 PC4 ADC
4 A3 ARD-ADC_A3 PC5 ADC
5 A4 ARD-ADC_A4 PA7 ADC / I2C1_SDA
6 A5 ARD-ADC_A5 PB0 ADC / I2C1_SCL
CN13
10 SCL/D15 I2C1_SCL PB8 I2C1_SCL
9 SDA/D14 I2C1_SDA PB9 I2C1_SDA
8 VREFP VREFP - VREFP
7 GND GND - GND
6 SCK/D13 ARD.D13_SPI1_SCK PE13 SPI1_SCK / LD2
5 MISO/D12 ARD.D12_SPI1_MISO PE14 SPI1_MISO
4 PWM/MOSI/D11 ARD.D11_SPI1_MOSI PE15
SPI1_MOSI /
TIM1_CH4N
3 PWM/CS/D10 ARD.D10_TIM_SPI1_NSS PE12
SPI1_NSS /
TIM1_CH3N
2 PWM/D9 ARD.D9_TIM PA8 TIM1_CH1
1 D8 ARD.D8_IO PC1 GPIO
CN14
8 D7 ARD.D7_IO PF13 GPIO
7 PWM/D6 ARD.D6_TIM PB6 TIM4_CH1
6 PWM/D5 ARD.D5_TIM PE0 TIM16_CH1
5 D4 ARD.D4_INT PE7 GPIO
4 PWM/D3 ARD.D3_TIM PB2 TIM8_CH4N
3 D2 ARD.D2_IO PD15 GPIO
2 TX/D1 ARD.D1_TX PD8 UART3_TX
1 RX/D0 ARD.D0_RX PD9 UART3_RX
Caution:
ARDUINO
®
UART is shared with STMod+ CN2 UART so both cannot be used at the same time.
UM2839
ARDUINO® Uno V3 connectors
UM2839 - Rev 4
page 33/54
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