Hardware description
UM1975
8/20
DocID028608 Rev 1
2
Hardware description
This section describes the X-NUCLEO-IDW01M1 features and provides useful information
for understanding the board schematics.
2.1
X-NUCLEO-IDW01M1 expansion board for STM32 Nucleo
The expansion board allows the user to test the functionality of the module. The
SPWF01SA module embeds a low power Wi-Fi b/g/n transceiver SoC, SMD antenna and
STM32 MCU.
Board functionality can be manipulated through the firmware packaged with the X-CUBE-
WIFI1 software, which must be programmed on the STM32 Nucleo board microcontroller.
Please, refer to user manuals UM1724 and UM1725 available on
information on STM32 Nucleo boards.
The SPWF01SA module and the STM32 Nucleo board are connected through connectors
CN7 (see
Table 1: "Interconnection between STM32 Nucleo board and X-NUCLEO-
IDW01M1 (ST morpho connector - CN7)"
) and CN10
Table 2: "Interconnection between
STM32 Nucleo board and X-NUCLEO-IDW01M1 (ST morpho connector - CN10)"
Moreover, considering that signals available on CN5, CN6, CN8 and CN9 are also
replicated on CN7 even and CN10 odd pin, it useful to indicate the indirect connection
between STM32 Nucleo board and X-NUCLEO-IDW01M1 (see tables from
Table 6: "Interconnection between STM32 Nucleo board
and X-NUCLEO-IDW01M1 through (Arduino UNO R3 Connectors CN9 - Digital)"
Pins marked with an asterisk (*) indicate an alternative pin for that specific
function and pins marked with a hash (#) indicate a specific function reserved for
future use and, not yet implemented on the module SPWF01SA.
Table 1: Interconnection between STM32 Nucleo board and X-NUCLEO-IDW01M1 (ST morpho
connector - CN7)
CN7 odd
CN7 even
Pin
Name
Fcn
Fcn
Name
Pin
1
2
3
PC12
WIFI_RST
GPIO10
PD2
4
5
VDD
E5V
6
7
GND
8
9
10
11
IOREF
12
13
RESET
14
15
PA14
GPIO13
+3V3
16
17
+5V
18
19
GND
GND
20
21
PB7
USART_RX*
GND
22
23
VIN
24