Arduino Nano Connectors; Table 8. Arduino Nano Connectors On Nucleo-F031K6 - ST STM32 NUCLEO-F042K6 User Manual

Hardware layout and configuration
Bridge
SB18
1. The default configuration is reported in bold style.
6.9

Arduino Nano connectors

CN3 and CN4 are male connectors compatible with Arduino Nano standard. Most shields
designed for Arduino Nano can fit to the STM32 Nucleo-32 board.
Caution: The I/Os of STM32 are 3.3 V compatible instead of 5 V for Arduino Nano.
Table 8, Table 9, Table 10
Arduino Nano connectors.
Figure 6
NUCLEO-F042K6, NUCLEO-F303K8 and NUCLEO-L031K6.
Connector
CN3
CN4
20/31
Table 7. Solder bridges (continued)
State
(1)
ON
OFF
and
and Figure 7 show Arduino Nano connectors assignment for NUCLEO-F031K6,

Table 8. Arduino Nano connectors on NUCLEO-F031K6

Pin number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
1
DocID028406 Rev 1
STM32 PB7 is connected to CN4 pin 8 for I2C SCL support on
Arduino Nano A4. In such case STM32 PB7 does not support
Arduino Nano D4 and PA5 must be configured as input floating.
CN4 pin 8 is used as Arduino Nano analog input A4 without I2C
support and CN3 pin 7 is available as Arduino Nano D4.
Table 11 show the pin assignments of each STM32 on
Pin name STM32 pin
Left connector
D1 PA9
D0 PA10
RESET NRST
GND -
D2 PA12
D3 PB0
(5)
D4 PB7
(5)
D5 PB6
D6 PB1
(3)
D7 PF0
(3)
D8 PF1
D9 PA8
D10 PA11
D11 PB5
D12 PB4
Right connector
VIN -
Description
Function
USART1_TX
USART1_RX
RESET
Ground
-
TIM3_CH3
-
TIM16_CH1N
TIM14_CH1
-
-
TIM1_CH1
(4)
SPI_CS || TIM1_CH4
SPI1_MOSI || TIM3_CH2
SPI1_MISO
Power input
UM1956
(1)
(1)
(2)