Data Sheet

BLUENRG-M2Sx
11
(a) The pin DIO7/BOOT is monitored by bootloader after power up or hardware Reset and it should
be low to prevent unwanted bootloader activation
(b) 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 6.
(c) 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 6.
(d) DI012 can only be General Purpose Input pins (not output), or I2C1 clock pin.
(e) BlueNRG-M2SA only
6 Mechanical dimensions
Figure 6. Mechanical dimensions for the BLUENRG-M2SA
16
DIO2
GPIO2
PWM0
SPI_OUT
PDM_CLK
17
DIO3
GPIO3
PWM1
SPI_IN
ADC_CLK
18
DIO1
GPIO1
UART_RTS
SPI_CS1
PDM_DAT
19
RESETN
Reset
20
DIO12
GPIO12 (d)
I2C1_CLK
21 (e)
NC
Leave unconnected
22 (e)
NC
Leave unconnected
23 (e)
NC
Leave unconnected