Table 9. Arduino Nano Connectors On Nucleo-F042K6 - ST STM32 NUCLEO-F042K6 User Manual

UM1956
Connector
CN4
1. Only one USART is available and it is shared between Arduino Nano and VCP. The selection is done by
remapping (no need to change the hardware configuration).
2. D5 PWM on inverted channel Timer 16.
3. D7/D8 shared with OSC_IN/OSC_OUT.
4. SPI_CS is made by GPIO.
5. Limitations on A4 and A5, D4 and D5 related to I2C configuration are explained in
bridges
Connector
CN3
Table 8. Arduino Nano connectors on NUCLEO-F031K6 (continued)
Pin number
2
3
4
5
6
7
8
9
10
11
12
13
14
15
according to SB16/SB18 setting.

Table 9. Arduino Nano connectors on NUCLEO-F042K6

Pin number Pin name
1
2
3 RESET
4
5
6
7
8
DocID028406 Rev 1
Pin name STM32 pin
GND -
RESET NRST
+5V -
A7 PA2
A6 PA7
(5)
A5 PA6
(5)
A4 PA5
A3 PA4
A2 PA3
A1 PA1
A0 PA0
AREF -
+3V3 -
D13 PB3
STM32 pin
Left connector
D1 PA9
D0 PA10
NRST
GND -
D2 PA12
D3 PB0
(1)
D4 PB7
(1)
D5 PB6
Hardware layout and configuration
Function
Ground
RESET
5V input/output
ADC_IN2
ADC_IN7
ADC_IN6 || I2C1_SCL
ADC_IN5 || I2C1_SDA
ADC_IN4
ADC_IN3
ADC_IN1
ADC_IN0
AVDD
3.3V input/output
SPI1_SCK
Section 6.8: Solder
Function
USART1_TX
USART1_RX
RESET
Ground
-
TIM3_CH3
-
TIM16_CH1N
(2)
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