7 Connectors
7.1
ARDUINO
®
Uno V3 connectors
CN2, CN3, CN6 and CN7 are female connectors compatible with the ARDUINO
®
standard. Most shields
designed for ARDUINO
®
can fit to the STM32H745I-DISCO and STM32H750B-DK Discovery kits. The
STM32H745I-DISCO/STM32H750B-DK ARDUINO
®
connectors support ARDUINO
®
Uno V3.
Caution:
The STM32 microcontroller I/Os are 3.3 V compatible instead of 5 V for ARDUINO
®
Uno.
Table 6. ARDUINO
®
connectors (CN2, CN3, CN6, and CN7)
Left connectors Right connectors
CN
number
Pin
number
Pin
name
Microcontroller
pin
Function Function
Microcontroller
pin
Pin
name
Pin
number
CN
number
-
I2C1_SCL PD12 D15 10
CN2
digital
I2C1_SDA PD13 D14 9
AVDD - AREF 8
Ground - GND 7
CN3
power
1 NC - - SPI2_SCK PD3 D13 6
2 IOREF - 3.3V Ref SPI2_MISO PI2 D12 5
3 RESET NRST RESET
TIM12_CH2,
SPI2_MOSI
PB15 D11 4
4 3V3 -
3.3V
input/output
TIM3_CH1,
SPI2_NSS
PB4 D10 3
5 5V - 5Voutput TIM8_CH3N PH15 D9 2
6 GND - Ground - PE3 D8 1
7 GND - Ground -
8 VIN - Power input - PI8 D7 8
CN6
digital
- TIM15_CH2 PE6 D6 7
CN7
analog
1 A0 PC0 ADC123_IN10 TIM1_CH1 PA8 D5 6
2 A1 PF8 ADC3_IN7 - PK1 D4 5
3 A2 PA0_C ADC12_IN0 TIM3_CH1 PA6 D3 4
4 A3 PA1_C ADC12_IN1 - PG3 D2 3
5 A4 PC2_C or PD13
ADC3_IN0
(PC2) or
I2C1_SDA
(PD13)
USART1_TX PB6 D1 2
6 A5 PC3_C or PD12
ADC3_IN1
(PC3) or
I2C1_SCL
(PD12)
USART1_RX PB7 D0 1
UM2488
Connectors
UM2488 - Rev 4
page 16/55
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