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The access line ultra-low-power STM32L021x4 family incorporates the high-performance ARM® Cortex®-M0+ 32-bit RISC core operating at a 32 MHz frequency, high-speed embedded memories (16 Kbytes of Flash program memory, 512 bytes of data EEPROM and 2 Kbytes of RAM) plus an extensive range of enhanced I/Os and peripherals.
The STM32L021x4 devices provide high power efficiency for a wide range of performance. It is achieved with a large choice of internal and external clock sources, an internal voltage adaptation and several low-power modes.
The STM32L021x4 devices offer several analog features, one 12-bit ADC with hardware oversampling, two ultra-low-power comparators, AES, several timers, one low-power timer (LPTIM), three general-purpose 16-bit timers, one RTC and one SysTick which can be used as timebases. They also feature two watchdogs, one watchdog with independent clock and window capability and one window watchdog based on bus clock.
Moreover, the STM32L021x4 devices embed standard and advanced communication interfaces: one I2C, one SPI, one USART, and a low-power UART (LPUART).
The STM32L021x4 also include a real-time clock and a set of backup registers that remain powered in Standby mode.
The ultra-low-power STM32L021x4 devices operate from a 1.8 to 3.6 V power supply (down to 1.65 V at power down) with BOR and from a 1.65 to 3.6 V power supply without BOR option. They are available in the -40 to +125 °C temperature range. A comprehensive set of power-saving modes allows the design of low-power applications.主要特性
- Ultra-low-power platform
- 1.65 V to 3.6 V power supply
- -40 to 125 °C temperature range
- 0.23 μA Standby mode (2 wakeup pins)
- 0.34 μA Stop mode (16 wakeup lines)
- 0.67 μA Stop mode + RTC + 2 KB RAM retention
- Down to 79 μA/MHz in Run mode
- 5 μs wakeup time (from Flash memory)
- 1 μA 12-bit ADC conversion at 10 ksps
- Core: ARM® 32-bit Cortex®-M0+
- Up to 32 MHz max.
- 0.95 DMIPS/MHz
- Ultra-safe, low-power BOR (brownout reset) with 5 selectable thresholds
- Ultralow power POR/PDR
- Programmable voltage detector (PVD)
- Clock sources
- 0 to 32 MHz external clock
- 32 kHz oscillator for RTC with calibration
- High speed internal 16 MHz factory-trimmed RC (+/- 1%)
- Internal low-power 37 kHz RC
- Internal multispeed low-power 65 kHz to 4.2 MHz RC
- PLL for CPU clock
- Pre-programmed bootloader
- USART, SPI supported
- Development support
- Serial wire debug supported
- Up to 38 fast I/Os (31 I/Os 5V tolerant)
- Memories
- 16 KB Flash memory with ECC
- 2 KB RAM
- 512 B of data EEPROM with ECC
- 20-byte backup register
- Sector protection against R/W operation
- Rich Analog peripherals
- 12-bit ADC 1.14 Msps up to 10 channels (down to 1.65 V)
- 2x ultra-low-power comparators (window mode and wake up capability, down to 1.8 V)
- 7-channel DMA controller, supporting ADC, SPI, I2C, USART, Timers, AES
- 5x peripherals communication interface
- 1x USART (ISO 7816, IrDA), 1x UART (low power)
- 1x SPI 16 Mbits/s
- 1x I2C (SMBus/PMBus)
- 8x timers: 1x 16-bit with up to 4 channels, 1x 16-bit with up to 2 channels, 1x 16-bit ultra-low-power timer, 1x SysTick, 1x RTC and 2x watchdogs (independent/window)
- CRC calculation unit, 96-bit unique ID
- Hardware Encryption Engine AES 128-bit
- All packages are ECOPACK®2
- Ultra-low-power platform
电路原理图
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This video is about the STM32L5, our recently announced ultra-low power microcontroller bringing a new security dimension. The STM32L5 is now in full production and all its ecosystem is available including hardware kits, software tools, firmware and all documentations of course. This is our first STM32 based on Cortex-M33 and its Trustzone and using specific ST security implementation - watch the video to find out more!
The STM32L5 is based on Arm® Cortex-M33 and TrustZone® technology combined with STMicroelectronics security implementation. On your STM32L562E-DK discovery board, TrustZone is disabled (factory setting) and you can develop as on any other STM32 device. This video shows how to enable TrustZone on STM32L562E-DK discovery using STM32CubeProgrammer and create, compile and debug or run a new project with STM32CubeIDE. It also shows how to open an example project delivered in STM32CubeL5 MCU Package, modify, compile and debug or run it. For further information, you can refer to AN5394 and AN5424 application notes.
MadeForSTM32™ is a new quality label delivered by ST, which is granted after an evaluation process. It helps engineers identify third party solutions with the highest level of integration and quality for the STM32 microcontrollers' ecosystem. MadeForSTM32™ is offered to members of the ST Partner Program who want to go one step further in our collaboration, with the overall objective of contributing to a high-quality STM32 ecosystem.
开发工具硬件
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图片 产品型号 制造商 描述 ARM Lauterbach µTrace Lauterbach All-in-one debug and trace solution for Cortex-M. ARM Lauterbach Combiprobe II Lauterbach Debugging of multicore microcontrollers consisting of Cortex-M cores and cores from other architecture. Arm Keil ULINKplus Arm Keil 隔离高性能调试适配器，支持JTAG、SWD、SWV、功耗测量和测试I/O Arm Keil ULINKpro Arm Keil 通过JTAG或SWD实现的高性能调试适配器和通过SWV（数据/事件跟踪）或ETM（指令跟踪）实现的流跟踪 CYCLONE P&E Microcomputer Systems 自动化独立生产编程、调试和测试。 CYCLONE FX P&E Microcomputer Systems 自动化独立生产编程、调试和测试。 
FlashPro Elprotronic 基于STM8和ARM的MCU的Flash编程器。 Flasher ATE SEGGER Microcontroller Flasher ATE是用于大规模量产的群组编程器 Flasher Portable Plus SEGGER Microcontroller Flasher Portable Plus是一种电池驱动的编程系统 Flasher Secure SEGGER Microcontroller Flasher Secure是一种安全量产编程系统 
GangPro Elprotronic 基于STM8和ARM的MCU的群组编程器。 I-jet IAR Systems 调试工具 I-jet Trace IAR Systems 调试跟踪工具 
J-Link SEGGER Microcontroller STM32的Segger J-Link调试工具 J-Trace Pro for Cortex-M SEGGER Microcontroller SEGGER J-Trace Pro调试和跟踪工具 Multilink ACP P&E Microcomputer Systems ARM器件的调试工具。 Multilink Universal FX P&E Microcomputer Systems ARM和其他器件的高速调试工具。 SIGFOX-USB2-C XoverIoT USB入门开发套件。SIGFOX-USB2是安装了SIGFOX-DEV1-C的基板。 
ST-LINK/V2 ST STM8和STM32的ST-LINK/V2在线调试器/编程器 
STLINK-V3SET ST STLINK-V3模块化在线调试器和编程器用于STM32/STM8 产品型号All-in-one debug and trace solution for Cortex-M.
Debugging of multicore microcontrollers consisting of Cortex-M cores and cores from other architecture.
隔离高性能调试适配器，支持JTAG、SWD、SWV、功耗测量和测试I/O
通过JTAG或SWD实现的高性能调试适配器和通过SWV（数据/事件跟踪）或ETM（指令跟踪）实现的流跟踪
自动化独立生产编程、调试和测试。
自动化独立生产编程、调试和测试。
基于STM8和ARM的MCU的Flash编程器。
Flasher ATE是用于大规模量产的群组编程器
Flasher Portable Plus是一种电池驱动的编程系统
Flasher Secure是一种安全量产编程系统
基于STM8和ARM的MCU的群组编程器。
调试工具
调试跟踪工具
STM32的Segger J-Link调试工具
SEGGER J-Trace Pro调试和跟踪工具
ARM器件的调试工具。
ARM和其他器件的高速调试工具。
USB入门开发套件。SIGFOX-USB2是安装了SIGFOX-DEV1-C的基板。
STM8和STM32的ST-LINK/V2在线调试器/编程器
STLINK-V3模块化在线调试器和编程器用于STM32/STM8
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图片 产品型号 制造商 描述 ARM Lauterbach Front-End debugger Lauterbach TRACE32 can be used as debug front-end for various virtual targets, core simulators, target servers such as GDB. ARM Lauterbach Instruction Set Simulator Lauterbach The TRACE32 Instruction Set Simulator is available for nearly all processor architectures supported by TRACE32. An intensive use of this tool requires a TRACE32 Simulator License. ARM Lauterbach PowerView debugger Lauterbach PowerView provides an integrated debug environment and a universal interface for the entire tool family. Arm Keil MDK Arm Keil 所有STM32器件的完整软件开发解决方案。包括C/C++编译器、IDE/调试器、CMSIS、RTOS和中间件 Arm Keil MDK for STM32F0, STM32L0 and STM32G0 Arm Keil 所有STM32F0、STM32L0和STM32G0器件的完整软件开发解决方案。包括C/C++编译器、IDE/调试器、CMSIS组件和RTOS Arm tool: ARM Development Studio ARM Development Solutions Comprehensive embedded toolchain for any Arm-based device: Eclipse-based IDE/debugger, C/C++ Compiler, CMSIS, performance analyzer, graphics debugger. CXSTM32 Cosmic Software STM32完整开发套件（编译器 + 调试器） CoIDE CooCox CooCox CoIDE，免费且高度集成的软件开发环境，用于ARM Cortex MCU Compilers for ARM MikroElektronika mikroC PRO for ARM、mikroBasic PRO for ARM和mikroPascal PRO for ARM是ARM® Cortex®-M0、M0+、M3、M4和M7微控制器的全功能编译器。 CrossWorks Rowley Rowley Associates CrossWorks，支持JTAG Flash下载和调试的集成开发环境 EMP-Thunder Emprog Emprog ThunderBench，完全集成且精心打造的ARM Cortex C/C++开发工具 FLASHER-STM32 ST STM32 Flash加载器演示程序（UM0462） IAR C-RUN for Arm IAR Systems 运行时间分析工具；IAR Embedded Workbench for Arm的插件式产品 IAR C-STAT IAR Systems 静态分析工具；IAR Embedded Workbench的插件式产品 IAR Embedded Workbench for Arm IAR Systems 集成开发环境 IAR Embedded Workbench for Arm - Functional Safety IAR Systems 集成开发环境 IAR Visual State IAR Systems 状态机建模工具 MULTI Green Hills Software 使用C和C++的嵌入式应用的GreenHills集成开发和调试环境 RIDE-STM32 Raisonance STM32 MCU的Raisonance品牌集成开发环境 Remedy Bootloader Package RoweBots Remedy Bootloader - 实现轻松更新和高级保护。 Remedy Datalogger Package RoweBots Remedy Datalogger具有动态远程数据记录和控制功能。 SEGGER Embedded Studio SEGGER Microcontroller 交叉平台集成开发环境（IDE），用于管理、构建、测试和部署嵌入式应用 SENSE Fieldscale An end-to-end solution for the design, schematic capture, and system-level simulation of capacitive touch sensors. 
ST MCU Finder ST 用于移动设备和台式电脑的STM32和STM8产品查找工具 
ST-MCU-FINDER-PC ST 用于台式电脑的STM32和STM8产品查找工具 
STM-STUDIO-STM32 ST STM32微控制器的STM Studio运行时间变量监控和可视化工具 
STM32CubeIDE ST STM32的集成开发环境 
STM32CubeMX ST STM32Cube初始化代码生成器 
STM32CubeProg ST 用于STM32产品编程的STM32CubeProgrammer软件 STSW-STM32080 ST DfuSe USB设备固件升级意法半导体扩展入门：包含演示GUI、调试GUI、所有源文件和协议层（UM0412） STSW-STM32095 ST 用于STM32配置和初始化C代码生成的STM32CubeMX Eclipse插件 STSW-STM32102 ST STM32虚拟COM端口驱动程序 STSW-STM32103 ST STM32串行线查看器（SWV）和嵌入式跟踪宏单元（ETM）功能。示例和技术笔记。 STVP-LIB-STM32 ST STVP编程工具包：用于创建PC编程接口的C++源文件 STVP-STM32 ST ST Visual Programmer STM32 SW4STM32 AC6 System Workbench for STM32：Windows、Linux和OS X上的免费IDE Storyboard Designer Crank Software 用于创建最佳GUI的开发工具。 TASKINGVX-STM32 TASKING Altium的C/C++编译和调试工具，用于基于ARM的MCU 
TrueSTUDIO Atollic STM32项目的强大C/C++集成开发工具，基于Eclipse VisualGDB Sysprogs 将对STM32器件的支持无缝集成到Visual Studio中 winIDEA-STM32 iSYSTEM 用于STM32 MCU的iSYSTEM的完整软件开发和测试解决方案 产品型号TRACE32 can be used as debug front-end for various virtual targets, core simulators, target servers such as GDB.
The TRACE32 Instruction Set Simulator is available for nearly all processor architectures supported by TRACE32. An intensive use of this tool requires a TRACE32 Simulator License.
PowerView provides an integrated debug environment and a universal interface for the entire tool family.
所有STM32器件的完整软件开发解决方案。包括C/C++编译器、IDE/调试器、CMSIS、RTOS和中间件
所有STM32F0、STM32L0和STM32G0器件的完整软件开发解决方案。包括C/C++编译器、IDE/调试器、CMSIS组件和RTOS
Comprehensive embedded toolchain for any Arm-based device: Eclipse-based IDE/debugger, C/C++ Compiler, CMSIS, performance analyzer, graphics debugger.
STM32完整开发套件（编译器 + 调试器）
CooCox CoIDE，免费且高度集成的软件开发环境，用于ARM Cortex MCU
mikroC PRO for ARM、mikroBasic PRO for ARM和mikroPascal PRO for ARM是ARM® Cortex®-M0、M0+、M3、M4和M7微控制器的全功能编译器。
Rowley Associates CrossWorks，支持JTAG Flash下载和调试的集成开发环境
Emprog ThunderBench，完全集成且精心打造的ARM Cortex C/C++开发工具
STM32 Flash加载器演示程序（UM0462）
运行时间分析工具；IAR Embedded Workbench for Arm的插件式产品
静态分析工具；IAR Embedded Workbench的插件式产品
状态机建模工具
使用C和C++的嵌入式应用的GreenHills集成开发和调试环境
STM32 MCU的Raisonance品牌集成开发环境
Remedy Bootloader - 实现轻松更新和高级保护。
Remedy Datalogger具有动态远程数据记录和控制功能。
交叉平台集成开发环境（IDE），用于管理、构建、测试和部署嵌入式应用
An end-to-end solution for the design, schematic capture, and system-level simulation of capacitive touch sensors.
用于移动设备和台式电脑的STM32和STM8产品查找工具
用于台式电脑的STM32和STM8产品查找工具
STM32微控制器的STM Studio运行时间变量监控和可视化工具
STM32的集成开发环境
STM32Cube初始化代码生成器
用于STM32产品编程的STM32CubeProgrammer软件
DfuSe USB设备固件升级意法半导体扩展入门：包含演示GUI、调试GUI、所有源文件和协议层（UM0412）
用于STM32配置和初始化C代码生成的STM32CubeMX Eclipse插件
STM32虚拟COM端口驱动程序
STM32串行线查看器（SWV）和嵌入式跟踪宏单元（ETM）功能。示例和技术笔记。
STVP编程工具包：用于创建PC编程接口的C++源文件
ST Visual Programmer STM32
System Workbench for STM32：Windows、Linux和OS X上的免费IDE
用于创建最佳GUI的开发工具。
Altium的C/C++编译和调试工具，用于基于ARM的MCU
STM32项目的强大C/C++集成开发工具，基于Eclipse
将对STM32器件的支持无缝集成到Visual Studio中
用于STM32 MCU的iSYSTEM的完整软件开发和测试解决方案
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生态系统
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图片 产品型号 制造商 描述 Maia module WEPTECH elektronik Maia是一种单独的嵌入式低成本无线M-Bus RF模块，专为采用了无线M-Bus标准（EN13757-4）和OMS标准的AMR（自动抄表）智能计量应用和智能电网基础设施而开发。 SIGFOX-MOD1-C / -E XoverIoT SIGFOX-MOD1是一种超低功耗模块，专为安装了芯片天线的传感器节点应用而设计。 SIGFOX-MOD2-C / -E XoverIoT The SIGFOX-MOD2 are ultra-low-power Uplink-Only modules designed especially for sensor node applications using Sigfox, subGHz and proprietary protocols. SensiBLE SensiEDGE 即用型BLE模块上系统包含了传感器、低功耗ARM® 32位Cortex®-M4 CPU和纽扣电池。立即行动，加快IoT产品开发速度！ SensiBLE 2.0 SensiEDGE SensiBLE 2.0 SoM集成了可充电锂离子电池、各种传感器和执行蓝牙协议的低功耗Cortex M0核心。 
SensiBLE 2.1 SensiEDGE SensiBLE 2.1 SoM integrates a rechargeable Li-Ion battery, a variety of sensors, and a low power Cortex M0 core that executes Bluetooth protocols. SensiSUB SensiEDGE 将低功耗SUB 1GHZ RF收发器连接到云，具有完全可定制的传感器、ARM® 32位Cortex®-M4 CPU和纽扣电池。 产品型号Maia是一种单独的嵌入式低成本无线M-Bus RF模块，专为采用了无线M-Bus标准（EN13757-4）和OMS标准的AMR（自动抄表）智能计量应用和智能电网基础设施而开发。
SIGFOX-MOD1是一种超低功耗模块，专为安装了芯片天线的传感器节点应用而设计。
The SIGFOX-MOD2 are ultra-low-power Uplink-Only modules designed especially for sensor node applications using Sigfox, subGHz and proprietary protocols.
即用型BLE模块上系统包含了传感器、低功耗ARM® 32位Cortex®-M4 CPU和纽扣电池。立即行动，加快IoT产品开发速度！
SensiBLE 2.0 SoM集成了可充电锂离子电池、各种传感器和执行蓝牙协议的低功耗Cortex M0核心。
SensiBLE 2.1 SoM integrates a rechargeable Li-Ion battery, a variety of sensors, and a low power Cortex M0 core that executes Bluetooth protocols.
将低功耗SUB 1GHZ RF收发器连接到云，具有完全可定制的传感器、ARM® 32位Cortex®-M4 CPU和纽扣电池。
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软件
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图片 产品型号 制造商 描述 Arm Keil FuSa RTS Arm Keil Set of embedded software components qualified for use in the most safety-critical applications in automotive, medical,railway, and industrial systems. CycloneCrypto Oryx Embedded 加密库 CycloneSSL Oryx Embedded 嵌入式SSL/TLS库 CycloneTCP Oryx Embedded 嵌入式TCP/IP堆栈（IPv4/IPv6双栈） Embedded Office Safety AddOns Embedded Office The "Safety AddOns" provides pre-certified safety measures. Flexible Safety RTOS Embedded Office The "Flexible Safety RTOS" is a pre-certified real time kernel for use in safety critical systems with or without the need of formal approval through a product certification. FreeRTOS Kernel AWS FreeRTOS内核是一种开源实时操作系统，并且是微控制器和小型微处理器的事实标准解决方案。 Gizwits GAgent Gizwits An application program running on various communication modules that provide two-way data communication between upper-layer applications and devices. HCC Bootloaders HCC Embedded STM32的存储、USB或串行自举加载程序，来自HCC Embedded HCC Embedded Encryption Manager (EEM) HCC Embedded Embedded Encryption Manager (EEM ) allows developers to secure embedded systems using multiple encryption or hash algorithms through a uniform interface. HCC FAT File Systems HCC Embedded HCC is renowned for its deep knowledge of flash storage media. In embedded systems, it is not possible to achieve the required efficiency, performance or reliability with a single file system. HCC Fail-Safe File System HCC Embedded STM32的所有Flash文件系统，具有容错机制，来自HCC Embedded HCC IPSec/IKE HCC Embedded IPSec/IKE provides a robust approach to security in embedded applications such as cars, "point-of-sale" terminals, medical devices, industrial equipment and many others. HCC IPv4 and IPv6 HCC Embedded HCC has developed an advanced, embedded IPv6 - Dual IPv4/v6 stack with no third party or open source content using a structured software development process. HCC MISRA TCP/IP HCC Embedded STM32的TCP/IP v4或v6堆栈，来自HCC Embedded HCC MQTT HCC Embedded MQTT is a small and efficient machine-to-machine protocol. HCC Nichestack HCC Embedded InterNiche Technologies has been a leader in embedded networking for more than 25 years. Now a part of HCC Embedded, Nichestack technology is a valuable resource for any embedded developer. HCC SMFS HCC Embedded HCC has taken the radical approach of defining a system built around the needs of smart-meters. Metering applications usually have well-defined record structures and HCC has used its extensive flash experience to take advantage of this. HCC TLS SSL HCC Embedded Verifiable TLS/SSL: a highly optimized software module designed to provide secure network communications for embedded devices. HCC USB Stack HCC Embedded STM32的USB主机和设备堆栈，来自HCC Embedded I-CUBE-EMBOS SEGGER Microcontroller embOS软件扩展，用于STM32Cube I-CUBE-UNISON RoweBots UNISON软件扩展，用于STM32Cube I-CUBE-WOLFSSL wolfSSL wolfSSL software expansion for STM32Cube 
Nanoedge AI™ Cartesiam NanoEdge AI™ by Cartesiam is the firstMachine Learning Software specifically developed to entirely run on microcontrollers. Prevas Simple Connect Prevas 通信基础设施，在通过互联网连接的客户端与设备之间提供安全的即时通信。 ProvenCore-M Prove & Run STM32 Arm Cortex-M微控制器的高安全性操作系统。 STACKFORCE Wireless M-Bus Protocol Stack STACKFORCE Wireless M-Bus Protocol Stack, compliant to EN 13757-3/-4 and several other standards/specification based on it, such as OMSv3/v4, E/DSMR, CIG UNI/TS. STM32-WMA/DEC ST Audio Engine WMA解码器和实用程序 
STM32CubeL0 ST STM32Cube MCU包，用于STM32L0系列（HAL、底层API和CMSIS（CORE、DSP和RTOS）、USB、File system、RTOS和Touch Sensing - 附带在以下ST板上运行的示例：STM32 Nucleo、探索套件和评估板） 
STM32SnippetsL0 ST 涵盖STM32 L0系列的代码片段示例 Sigfox Connectivity Sigfox Sigfox IoT连接为您的创新战略提供支持，并帮助您实现业务的数字化转变。Sigfox IoT连接为各种业务活动增添价值。随着传感器的持续小型化和技术上的不断进步（例如能量采集），我们将见证连续的数据流，融合物理世界与数字世界。 Sigfox Geolocation Sigfox Sigfox Geolocation，最简单且最高效的IoT定位服务。Sigfox Geolocation是一种低功耗定位服务，适用于所有配备最简单Sigfox模块的设备，无需GPS。无需为了升级特定硬件进行改装或更新软件：Sigfox现在可以为全球各地所有现有的和将来的设备提供定位。 Storyboard Engine Crank Software 用于创建最佳GUI的嵌入式软件。 TEConcept IO-Link Device Software Stack TEConcept Our IO-Link software stack (IDS-BSS-V11/20) opens sensor and actuator manufacturers a cost efficient and easy way to integrate state-of-the-art IO-Link technology into their products. UNISON Busses RoweBots UNISON RTOS提供使用核心串行总线的能力。 UNISON File System RoweBots UNISON FATFS和UNISON Power Safe FAT File System UNISON Kernel RoweBots UNISON实时操作系统内核 UNISON Security RoweBots UNISON RTOS安全协议 UNISON TCP/IP IPv6/IPv4 Networking Stack RoweBots 有或没有IPv6和其他网络组件的完整网络服务器。 UNISON USB RoweBots UNISON USB嵌入式主机服务器、嵌入式设备服务器和OTG服务器。 UNISON Wireless RoweBots 支持各种无线模块。 WITTENSTEIN Enhanced Security Module WITTENSTEIN high integrity systems For the highest security-critical environments, the Enhanced Security Module reinforces and strengthens the existing security of SAFERTOS. WITTENSTEIN OPENRTOS WITTENSTEIN high integrity systems OPENRTOS，WITTENSTEIN高完整性系统中的高性能RTOS WITTENSTEIN SAFERTOS WITTENSTEIN high integrity systems SAFERTOS，WITTENSTEIN高完整性系统中的安全关键型RTOS WITTENSTEIN SAFERTOS CORE WITTENSTEIN high integrity systems SAFERTOS CORE，需考虑安全性但无需认证的嵌入式系统RTOS WITTENSTEIN Safety Plugins WITTENSTEIN high integrity systems Safety plugins are supplied with full source code and Design Assurance Pack designed to meet the requirements of IEC 61508 SIL3. 
X-CUBE-CLASSB ST B类60730-1和60335-1功能安全包，具有STM32Cube的软件扩展 X-CUBE-CRYPTOLIB ST STM32Cube的STM32加密固件库软件扩展（UM1924） X-CUBE-DBFU ST 双存储区STM32微控制器的即时固件更新（AN4767） X-CUBE-DSPDEMO ST 使用STM32时的数字信号处理，STM32Cube的软件扩展（AN4841） X-CUBE-IAP-USART ST 使用USART嵌入式软件进行STM32Cube应用内编程（AN4657） X-CUBE-LPTIMER ST STM32 MCU上的低功耗定时器（LPTIM）适用用例，STM32Cube的软件扩展（AN4865） X-CUBE-LPUART ST 使用LPUART的STM32Cube嵌入式软件功耗演示（AN4635） X-CUBE-NVMRWW ST 在不干扰STM32L0和STM32L1微控制器上的代码执行的情况下对NV存储器执行写操作（AN4808） X-CUBE-RC-CALIB ST STM32Cube的STM32L0和STM32L4校准软件扩展（AN4631和AN4736） X-CUBE-REF-PM ST STM32Cube的STM32 MCU软件扩展的参考功耗模式示例（AN4777） X-CUBE-RTC ST STM32Cube的实时时钟（RTC）软件扩展（AN4759） 
X-CUBE-SBSFU ST STM32Cube的安全启动和安全固件更新软件扩展 X-CUBE-SMBUS ST STM32Cube SMBus/PMBus嵌入式软件（AN4502） 
X-CUBE-STL ST STM32的功能安全包通过了IEC 61508安全完整性等级（SIL2/3）认证 X-CUBE-TIM-32RES ST 使用链路系统达到32位定时器分辨率的STM32Cube扩展软件（AN2592） cURL wolfSSL cURL是一个计算机软件项目，为使用各种协议传输数据提供了一个库。 
embOS SEGGER Microcontroller Segger的embOS优先级控制的RTOS，用于嵌入式实时应用 
embOS/IP SEGGER Microcontroller Segger的embOS/IP高效IP堆栈 wolfBoot wolfSSL wolfBoot是一种开源的商用级嵌入式安全软件。 wolfCrypt wolfSSL wolfCrypt是一种开源的商用级FIPS验证嵌入式安全软件。 wolfMQTT wolfSSL wolfMQTT是一种开源的商用级嵌入式安全软件。 wolfSSH wolfSSL wolfSSH是一款开源的商用级嵌入式安全软件。 wolfSSL wolfSSL wolfSSL是一款开源的商用级嵌入式安全软件。 wolfSSL JNI and JSSE Provider wolfSSL wolfSSL是一款开源的商用级嵌入式安全软件。 wolfTPM wolfSSL wolfTPM是一款开源的商用级嵌入式安全软件。 产品型号Set of embedded software components qualified for use in the most safety-critical applications in automotive, medical,railway, and industrial systems.
加密库
嵌入式SSL/TLS库
嵌入式TCP/IP堆栈（IPv4/IPv6双栈）
The "Safety AddOns" provides pre-certified safety measures.
The "Flexible Safety RTOS" is a pre-certified real time kernel for use in safety critical systems with or without the need of formal approval through a product certification.
FreeRTOS内核是一种开源实时操作系统，并且是微控制器和小型微处理器的事实标准解决方案。
An application program running on various communication modules that provide two-way data communication between upper-layer applications and devices.
STM32的存储、USB或串行自举加载程序，来自HCC Embedded
Embedded Encryption Manager (EEM ) allows developers to secure embedded systems using multiple encryption or hash algorithms through a uniform interface.
HCC is renowned for its deep knowledge of flash storage media. In embedded systems, it is not possible to achieve the required efficiency, performance or reliability with a single file system.
STM32的所有Flash文件系统，具有容错机制，来自HCC Embedded
IPSec/IKE provides a robust approach to security in embedded applications such as cars, "point-of-sale" terminals, medical devices, industrial equipment and many others.
HCC has developed an advanced, embedded IPv6 - Dual IPv4/v6 stack with no third party or open source content using a structured software development process.
STM32的TCP/IP v4或v6堆栈，来自HCC Embedded
MQTT is a small and efficient machine-to-machine protocol.
InterNiche Technologies has been a leader in embedded networking for more than 25 years. Now a part of HCC Embedded, Nichestack technology is a valuable resource for any embedded developer.
HCC has taken the radical approach of defining a system built around the needs of smart-meters. Metering applications usually have well-defined record structures and HCC has used its extensive flash experience to take advantage of this.
Verifiable TLS/SSL: a highly optimized software module designed to provide secure network communications for embedded devices.
STM32的USB主机和设备堆栈，来自HCC Embedded
embOS软件扩展，用于STM32Cube
UNISON软件扩展，用于STM32Cube
wolfSSL software expansion for STM32Cube
NanoEdge AI™ by Cartesiam is the firstMachine Learning Software specifically developed to entirely run on microcontrollers.
通信基础设施，在通过互联网连接的客户端与设备之间提供安全的即时通信。
STM32 Arm Cortex-M微控制器的高安全性操作系统。
Wireless M-Bus Protocol Stack, compliant to EN 13757-3/-4 and several other standards/specification based on it, such as OMSv3/v4, E/DSMR, CIG UNI/TS.
Audio Engine WMA解码器和实用程序
STM32Cube MCU包，用于STM32L0系列（HAL、底层API和CMSIS（CORE、DSP和RTOS）、USB、File system、RTOS和Touch Sensing - 附带在以下ST板上运行的示例：STM32 Nucleo、探索套件和评估板）
涵盖STM32 L0系列的代码片段示例
Sigfox IoT连接为您的创新战略提供支持，并帮助您实现业务的数字化转变。Sigfox IoT连接为各种业务活动增添价值。随着传感器的持续小型化和技术上的不断进步（例如能量采集），我们将见证连续的数据流，融合物理世界与数字世界。
Sigfox Geolocation，最简单且最高效的IoT定位服务。Sigfox Geolocation是一种低功耗定位服务，适用于所有配备最简单Sigfox模块的设备，无需GPS。无需为了升级特定硬件进行改装或更新软件：Sigfox现在可以为全球各地所有现有的和将来的设备提供定位。
用于创建最佳GUI的嵌入式软件。
Our IO-Link software stack (IDS-BSS-V11/20) opens sensor and actuator manufacturers a cost efficient and easy way to integrate state-of-the-art IO-Link technology into their products.
UNISON RTOS提供使用核心串行总线的能力。
UNISON FATFS和UNISON Power Safe FAT File System
UNISON实时操作系统内核
UNISON RTOS安全协议
有或没有IPv6和其他网络组件的完整网络服务器。
UNISON USB嵌入式主机服务器、嵌入式设备服务器和OTG服务器。
支持各种无线模块。
For the highest security-critical environments, the Enhanced Security Module reinforces and strengthens the existing security of SAFERTOS.
OPENRTOS，WITTENSTEIN高完整性系统中的高性能RTOS
SAFERTOS，WITTENSTEIN高完整性系统中的安全关键型RTOS
SAFERTOS CORE，需考虑安全性但无需认证的嵌入式系统RTOS
Safety plugins are supplied with full source code and Design Assurance Pack designed to meet the requirements of IEC 61508 SIL3.
B类60730-1和60335-1功能安全包，具有STM32Cube的软件扩展
STM32Cube的STM32加密固件库软件扩展（UM1924）
双存储区STM32微控制器的即时固件更新（AN4767）
使用STM32时的数字信号处理，STM32Cube的软件扩展（AN4841）
使用USART嵌入式软件进行STM32Cube应用内编程（AN4657）
STM32 MCU上的低功耗定时器（LPTIM）适用用例，STM32Cube的软件扩展（AN4865）
使用LPUART的STM32Cube嵌入式软件功耗演示（AN4635）
在不干扰STM32L0和STM32L1微控制器上的代码执行的情况下对NV存储器执行写操作（AN4808）
STM32Cube的STM32L0和STM32L4校准软件扩展（AN4631和AN4736）
STM32Cube的STM32 MCU软件扩展的参考功耗模式示例（AN4777）
STM32Cube的实时时钟（RTC）软件扩展（AN4759）
STM32Cube的安全启动和安全固件更新软件扩展
STM32Cube SMBus/PMBus嵌入式软件（AN4502）
STM32的功能安全包通过了IEC 61508安全完整性等级（SIL2/3）认证
使用链路系统达到32位定时器分辨率的STM32Cube扩展软件（AN2592）
cURL是一个计算机软件项目，为使用各种协议传输数据提供了一个库。
Segger的embOS优先级控制的RTOS，用于嵌入式实时应用
Segger的embOS/IP高效IP堆栈
wolfBoot是一种开源的商用级嵌入式安全软件。
wolfCrypt是一种开源的商用级FIPS验证嵌入式安全软件。
wolfMQTT是一种开源的商用级嵌入式安全软件。
wolfSSH是一款开源的商用级嵌入式安全软件。
wolfSSL是一款开源的商用级嵌入式安全软件。
wolfSSL是一款开源的商用级嵌入式安全软件。
wolfTPM是一款开源的商用级嵌入式安全软件。
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评估工具
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图片 产品型号 制造商 描述 
32L0538DISCOVERY ST 探索套件，采用STM32L053C8 MCU EasyMx PRO v7 for STM32 MikroElektronika STM32 ARM Cortex M0、M3、M4和M7 MCU的开发板。 Fusion for STM32 MikroElektronika World's first DEBUGGER over WIFI. MCU CARD for STM32 MikroElektronika Dozens of STM32 MCU CARDs for 8th generation of development boards such as Fusion for STM32, Fusion for ARM, mikromedia 7 and Clicker 4. 
NUCLEO-L011K4 ST 采用STM32L011K4 MCU的STM32 Nucleo-32开发板，支持Arduino连接 
NUCLEO-L031K6 ST 采用STM32L031K6 MCU的STM32 Nucleo-32开发板，支持Arduino连接 
NUCLEO-L053R8 ST 采用STM32L053R8 MCU的STM32 Nucleo-64开发板，支持Arduino和ST morpho连接 
NUCLEO-L073RZ ST 采用STM32L073RZ MCU的STM32 Nucleo-64开发板，支持Arduino和ST morpho连接 
P-NUCLEO-LRWAN2 ST STM32 Nucleo pack LoRa™ HF band sensor and gateway 
P-NUCLEO-LRWAN3 ST STM32 Nucleo pack LoRa™ LF band sensor and gateway 
STM32L073Z-EVAL ST 评估板，采用STM32L073VZ MCU 产品型号探索套件，采用STM32L053C8 MCU
STM32 ARM Cortex M0、M3、M4和M7 MCU的开发板。
World's first DEBUGGER over WIFI.
Dozens of STM32 MCU CARDs for 8th generation of development boards such as Fusion for STM32, Fusion for ARM, mikromedia 7 and Clicker 4.
采用STM32L011K4 MCU的STM32 Nucleo-32开发板，支持Arduino连接
采用STM32L031K6 MCU的STM32 Nucleo-32开发板，支持Arduino连接
采用STM32L053R8 MCU的STM32 Nucleo-64开发板，支持Arduino和ST morpho连接
采用STM32L073RZ MCU的STM32 Nucleo-64开发板，支持Arduino和ST morpho连接
STM32 Nucleo pack LoRa™ HF band sensor and gateway
STM32 Nucleo pack LoRa™ LF band sensor and gateway
评估板，采用STM32L073VZ MCU
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支持和应用
质量与可靠性
| 产品型号 | Marketing Status | 封装 | SMPS | 等级规格 | 符合RoHS级别 | 材料声明** |
|---|---|---|---|---|---|---|
| STM32L021F4U6TR |
批量生产
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UFQFPN 20 3x3x0.6 | - | 工业 | Ecopack2 | |
| STM32L021F4U7TR |
建议
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UFQFPN 20 3x3x0.6 | - | 工业 | - |
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(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此，它们可能不是100%适用于特定的设备。有关特定设备的信息，请联系 销售支持 。
样片和购买
| 产品型号 | 从分销商订购 | 从ST订购 | 供货状态 | ECCN (US) | ECCN (EU) | 包装类型 | 封装 | 温度（ºC） | Country of Origin | Timers (typ) (16-bit) | Timers (typ) (32-bit) | Number of A/D Converters (typ) | Number of A/D Converters (typ) | Number of A/D Converters (typ) | D/A Converters (typ) (12-bit) | Comparator | I/Os (High Current) | CAN (typ) | CAN FD (typ) | SPI (typ) | I2S (typ) | USART (typ) | UART (typ) | Integrated op-amps | SMPS | Budgetary Price (US$)*/Qty | 更多信息 | ||
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| 最小值 | 最大值 | ||||||||||||||||||||||||||||
| STM32L021F4U7TR | 没有经销商，请联系我们的销售办事处 |
建议
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- | - | Tape And Reel | UFQFPN 20 3x3x0.6 | -40 | 105 | - | 2 | - | - | - | - | - | 2 | 16 | - | - | 1 | - | 1 | - | - | - |
更多信息
Country of Origin: - Timers (typ) (16-bit): 2 Timers (typ) (32-bit): - Number of A/D Converters (typ): - Number of A/D Converters (typ): - Number of A/D Converters (typ): - D/A Converters (typ) (12-bit): - Comparator: 2 I/Os (High Current): 16 CAN (typ): - CAN FD (typ): - SPI (typ): 1 I2S (typ): - USART (typ): 1 UART (typ): - Integrated op-amps: - SMPS: - |
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| STM32L021F4U6TR | 2 distributors | 立即购买 |
批量生产
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5A992C | 5A002A4 | Tape And Reel | UFQFPN 20 3x3x0.6 | -40 | 85 | PHILIPPINES | 2 | - | - | - | - | - | 2 | 16 | - | - | 1 | - | 1 | - | - | - | 0.8187 / 10k |
更多信息
Country of Origin: PHILIPPINES Timers (typ) (16-bit): 2 Timers (typ) (32-bit): - Number of A/D Converters (typ): - Number of A/D Converters (typ): - Number of A/D Converters (typ): - D/A Converters (typ) (12-bit): - Comparator: 2 I/Os (High Current): 16 CAN (typ): - CAN FD (typ): - SPI (typ): 1 I2S (typ): - USART (typ): 1 UART (typ): - Integrated op-amps: - SMPS: - |
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供货状态
建议ECCN (US)
-Budgetary Price (US$)*/Qty