Table 15.
CN7 ARDUINO
®
-included Zio connector pinout
MCU
function
STM32
pin
Signal name
Pin name
Pin
Pin
Pin name
Signal name
STM32
pin
MCU
function
SAI2_A
PC6
SAI_C_MCLK
D16
1
2
D15
I2C_A_SCL
PB8
I2C1
SAI2_A
PD11
SAI_C_SD
D17
3
4
D14
I2C_A_SDA
PB9
I2C1
SAI2_A
PB13
SAI_C_SCK
D18
5
6
VREFP
-
-
-
SAI2_A
PD12
SAI_C_FS
D19
7
8
GND
-
-
-
SAI1_B/
SPI3
PA4
SAI_D_FS
D20
9
10
D13
SPI_A_SCK
PA5
SPI1
SAI1_B/
SPI3
PB4
SAI_D_MCLK
D21
11
12
D12
SPI_A_MISO
PA6
SPI1
SAI1_B/
SPI3
PB5
SAI_D_SD/
SPI_B_MOSI
D22
13
14
D11
SPI_A_MOSI /
TIM_E_PWM1
PA7
SPI1
SAI1_B/
SPI3
PB3
SAI_D_SCK/
SPI_B_SCK
D23
15
16
D10
SPI_A_CS /
TIM_B_PWM3
PD14
SPI1/
TIM4_CH3
SAI1/SPI3 PA4
SPI_B_NSS
D24
17
18
D9
TIM_B_PWM2
PD15
TIM4_CH4
SAI1/SPI3 PB4
SPI_B_MISO
D25
19
20
D8
IO
PF12
-
The SB20 solder bridge is used to disconnect the VREFP to the CN7 ARDUINO
®
connector CN7 pin 6.
•
SB20 OFF: VREFP is not connected to the CN7 ARDUINO
®
connector pin 6 (default configuration).
•
SB20 ON: VREFP is connected to the CN7 ARDUINO
®
connector pin 6
Table 16.
CN8 ARDUINO
®
-included Zio connector pinout
ARDUINO
®
function
Pin name
Signal name
STM32
pin
AR
DUI
NO
®
fun
ctio
n
Pin
Pin name
Signal name
STM32
pin
MCU
function
RES
-
NC
NC
1
2
D43
SDMMC_D0
PC8
SDMMC1
IO REF
-
IOREF
IOREF
3
4
D44
SDMMC_D1
PC9
SDMMC1
RESET
NRST
NRST
NRST
5
6
D45
SDMMC_D2
PC10
SDMMC1
3V3 I/O
-
3V3
3V3
7
8
D46
SDMMC_D3
PC11
SDMMC1
5V output
-
5V
5V
9
10
D47
SDMMC_CK
PC12
SDMMC1
GND
-
GND
GND
11
12
D48
SDMMC_CMD
PD2
SDMMC1
GND
-
GND
GND
13
14
D49
IO
PF3
-
VIN
-
VIN
VIN
15
16
D50
IO
PF5
-
UM2861
Zio connectors supporting ARDUINO® Uno V3
UM2861
-
Rev 2
page 33/49
