Data Sheet

BlueNRG-M2SA
P a g e | 12 Rev. 0.1
4
DIO5 C2 GPIO5 UART_TXD I2C2_DAT PWM1
5
Vin A3, E6 Supply pin
6
ANATEST0/
DIO14/
A5 GPIO14 I2C1_CLK SPI_CLK ADC_DATA
7
DIO7/BOOT(*) D2 GPIO7 UART_CTS I2C2_DAT PDM_CLK
8
GND A4, B6, C1, F5 Ground
9
DIO6 D1 GPIO6 UART_RTS I2C2_CLK PDM_DATA
10
DIO8 D3 GPIO8 UART_TXD SPI_CLK PDM_DATA
11
DIO11 E2 GPIO11 UART_RXD SPI_CS1 -
12
DIO9 E1 GPIO9 SWCLK SPI_IN
(***)
13
DIO10 F1 GPIO10 SWDIO SPI_OUT
(**)
14
ANATEST1 D4 Anatest1
15
DIO0 A2 GPIO0 UART_CTS SPI_CLK -
16
DIO2 A1 GPIO2 PWM0 SPI_OUT
(**)
PDM_CLK
17
DIO3 B1 GPIO3 PWM1 SPI_IN
(***)
ADC_CLK
18
DIO1 B2 GPIO1 UART_RTS SPI_CS1 PDM_DATA
19
RESETN B3 Reset Pin
20
DIO12 F2 GPIO12 - I2C1CLK
21
N.C N/A Must be left floating
22
N.C N/A Must be left floating
23
N.C N/A Must be left floating
Table 4: Pinout description
(*) The pin DIO7/BOOT is monitored by bootloader after power up or hardware Reset and it should be low to
prevent unwanted bootloader activation
(**) The function SPI_OUT indicates that the pin is always an output when configured for SPI. Thus in case of SPI
master role, it acts as MOSI pin. In case of SPI slave role, this pin act as MISO. See Table 5.
(***)The function SPI_IN indicates that the pin is always an input when configured for SPI. Thus in case of SPI master
role, it acts as MISO pin. In case of SPI slave role, this pin act as MOSI. See Table 5.
SPI function BLUENRG-M2SA SPI Role =
Master
BLUENRG-M2SA SPI Role =
Slave
SPI_IN SPI MISO SPI MOSI
SPI_OUT SPI MOSI SPI MISO
Table 5: SPI pin function