Hardware layout and configuration UM1956
26/37 UM1956 Rev 5
Table 13. Arduino Nano connectors on NUCLEO-L011K4
Connector
Pin
nu
mber
Pin Name STM32 pin Function
Left connector
CN3
1 D1 PA9 USART2_TX
(1)
1. Only one USART is available and it is shared between Arduino Nano and VCP. The selection is done by
remapping (no hardware configuration to change).
2 D0 PA10 USART2_RX
(1)
3 RESET NRST RESET
4 GND - Ground
5 D2 PA12 -
6 D3 PB0 TIM2_CH3
(2)
2. D3 and D5 PWM are using same channel of TIM2_CH3.
7 D4
(3)
3. Limitations on A4 and A5, D4 and D5, related to I
2
C configuration, are explained in Section 6.10: Solder
bridges according to SB16/SB18 setting.
PB7
8 D5
(3)
PB6 TIM2_CH3
(2)
9 D6 PB1 TIM2_CH4
10 D7
(4)
4. D7/D8 shared with OSC_IN/OSC_OUT.
PC14 -
11 D8
(4)
PC15 -
12 D9 PA8 TIM
(5)
5. No PWM on D9, D10, D11.
13 D10 PA11 SPI_CS
(6)
6. SPI_CS is made by GPIO.
|| TIM
(5)
14 D11 PB5 SPI1_MOSI || TIM
(5)
15 D12 PB4 SPI1_MISO
Right connector
CN4
1 VIN - Power input
2 GND - Ground
3 RESET NRST RESET
4 +5V - 5 V input/output
5 A7 PA2 ADC_IN2
(7)
7. PA2 exclusive with VCP_TX.
6 A6 PA7 ADC_IN7
7 A5
(3)
PA6 ADC_IN6 || I2C1_SCL
8 A4
(3)
PA5 ADC_IN5 || I2C1_SDA
9 A3 PA4 ADC_IN4
10 A2 PA3 ADC_IN3
11 A1 PA1 ADC_IN1
12 A0 PA0 ADC_IN0
13 AREF - AVDD
14 +3V3 - 3.3 V input/output
15 D13 PB3 SPI1_SCK
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