UM1956 Rev 4
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UM1956
Hardware layout and configuration
34
Table 14. Arduino Nano connectors on NUCLEO-L412KB
Connector
Pin number
Pin name
STM32 pin
Function
Left connector
CN3
1
D1
PA9
USART1_TX
2
D0
PA10
USART1_RX
3
RESET
NRST
RESET
4
GND
-
Ground
5
D2
PA12
-
6
D3
PB0
TIM1_CH2N
(1)
1. D3, D5 and D6 PWM on inverted channel.
7
D4
(2)
2. 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
(2)
PB6
TIM16_CH1N
(1)
9
D6
PB1
TIM1_CH3N
(1)
10
D7
(3)
3. D7/D8 shared with OSC32_IN/OSC32_OUT.
PC14
-
11
D8
(3)
PC15
-
12
D9
PA8
TIM1_CH1
13
D10
PA11
SPI_CS
(4)
|| TIM1_CH4
4. SPI_CS is made by GPIO.
14
D11
PB5
SPI1_MOSI || TIM
(5)
5. No PWM on D11.
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
ADC1_IN7
(6)
6. PA2 exclusive with VCP_TX.
6
A6
PA7
ADC1_IN12
7
A5
(2)
PA6
ADC1_IN11 || I2C1_SCL
8
A4
(2)
PA5
ADC1_IN10 || I2C1_SDA
9
A3
PA4
ADC1_IN9
10
A2
PA3
ADC1_IN8
11
A1
PA1
ADC1_IN6
12
A0
PA0
ADC1_IN5
13
AREF
-
AVDD
14
+3V3
-
3.3 V input/output
15
D13
PB3
SPI1_SCK
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