DocID028406 Rev 1 23/31
UM1956 Hardware layout and configuration
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Table 10. Arduino Nano connectors on NUCLEO-F303K8
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
5D2PA12 -
6 D3 PB0 TIM3_CH3
7D4
(1)
1. Limitations on A4 and A5, D4 and D5 related to I2C configuration are explained in Section 6.8: Solder
bridges according to SB16/SB18 setting.
PB7 -
8D5
(1)
PB6 TIM16_CH1N
(2)
2. D5 PWM on inverted channel Timer 16.
9 D6 PB1 TIM3_CH4
10 D7
(3)
3. D7/D8 shared with OSC_IN/OSC_OUT.
PF0 -
11 D8
(3)
PF1 -
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 || TIM17_CH1
15 D12 PB4 SPI1_MISO
Right connector
CN4
1 VIN - Power input
2 GND - Ground
3 RESET NRST RESET
4 +5V - 5V input/output
5 A7 PA2 ADC1_IN3
(5)
5. A7 exclusive with VCP_TX.
6 A6 PA7 ADC2_IN4
7A5
(1)
PA6 ADC2_IN3 || I2C1_SCL
8A4
(1)
PA5 ADC2_IN2 || I2C1_SDA
9 A3 PA4 ADC2_IN1
10 A2 PA3 ADC1_IN4
11 A1 PA1 ADC1_IN2
12 A0 PA0 ADC1_IN1
13 AREF - AVDD
14 +3V3 - 3.3V input/output
15 D13 PB3 SPI1_SCK
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