Product Data Sheet

3. Functional Overview
3.1 Processor
The Main Processor is a ARM Cortex M0+ running at up to 48 MHz
Most of its pins are connected to the external headers, however some are reserved for internal communication
to the communication module and to the internalSPI and I
2
C peripherals (Crypto).
Communication with NINA Module W102 happens through UART and a SPI through the following pins.
Pin
Acronym
NINA Pin
Acronym
Description
21
PA12
36
GPIO12
SPI MOSI
22
PA13
21
SPIV_DI
NINA_MISO
23
PA14
28
SPIV_CS
SPI CS
24
PA15
29
SPIV_CLK
SPI CLK
39
PA27
27
GPIO0
NINA_GPIO0
7
PB08
19
RESET
NINA RESET
41
PA28
7
GPIO_33
NINA_ACK
23
PA14
21
UART_CTS
NINA_CS
24
PA15
20
UART_CTS
NINA_SCK
38
PB23
22
UART_RXD
Serial1_RX
37
PA22
23
UART_TXD
Serial1_TX
3.2 WiFi Module
WiFi connectivity is provided by a Nina W102 Module. This module contains a STM32L0 processor along with a
Semtech SX1276 Radio. The processor is running on Arduino open source firmware based on Semtech code.
NOTE: Although Firmware is open source, modifying it will require recertification of the radio stack.