UM1956 Rev 4
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UM1956
Hardware layout and configuration
34
Table 12. Arduino Nano connectors on NUCLEO-L011K4
Connector
Pin
number
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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