ST B-L4S5I-IOT01A User Manual

Introduction
The B-L4S5I-IOT01A Discovery kit for the IoT node allows the user to develop applications with a direct connection to the cloud
servers.
The B-L4S5I-IOT01A Discovery kit for the IoT node enables a wide diversity of applications by exploiting low-power multilink
communication (Bluetooth
®
Low Energy, Wi‑Fi
®
, NFC), multiway sensing (detection, environmental awareness) and
Arm
®
Cortex
®
-M4 core-based STM32L4+ Series features.
ARDUINO
®
Uno V3 and Pmod
™
connectivity provide unlimited expansion capabilities with a large choice of specialized add-on
boards.
The B-L4S5I-IOT01A Discovery kit for the IoT node includes an ST-LINK debugger/programmer and comes with the
comprehensive STM32CubeL4 MCU Package, which provides an STM32 comprehensive software HAL library as well as
various software examples to seamlessly connect to cloud servers.
Figure 1. B-L4S5I-IOT01A Discovery kit for the IoT node
Picture is not contractual.
Discovery kit for IoT node, multi-channel communication with STM32L4+ Series
UM2708
User manual
UM2708 - Rev 1 - April 2020
For further information contact your local STMicroelectronics sales office.
www.st.com

ST B-L4S5I-IOT01A Specifications

General

Manufacturer	STMicroelectronics
Model	B-L4S5I-IOT01A
Category	Motherboard
Series	STM32L4
Core	ARM Cortex-M4
Clock Speed	120 MHz
Flash Memory	2 MB
SRAM	640 KB
Expansion Connectors	Arduino Uno V3, Pmod
Operating Voltage	1.7 V to 3.6 V
Power Supply	USB or external
Connectivity	Wi-Fi, Bluetooth
Sensors	Temperature, Humidity
Interfaces	UART, SPI, I2C
USB	Micro-USB
Operating Temperature	-40°C to 85°C

Summary

Features

Ordering Information

Development Environment

System Requirements

Development Toolchains

Hardware Layout and Configuration

Embedded STLINK/V2-1

Details the integrated ST-LINK/V2-1 programmer and debugger.

Power Supply

Explains the various 5V DC power supply options.

System Operations

Interfaces and Memory

On-board Sensors

Describes the integrated STMicroelectronics sensors.

Security and User Interface

Covers STSAFE-A110 security chip, buttons, and LEDs.

Connectors

ARDUINO® Uno V3 Connectors

Details the female connectors compatible with ARDUINO® Uno V3 shields.

Tag Connector CN5

PC Connectivity Ports

Covers ST-LINK USB, ST-LINK Debug, and USB OTG FS connectors for PC interaction.

Expansion Connectors

Appendix A: I/O Assignment

B-L4S5I-IOT01A Discovery Kit I/O Assignment