STM32L071KBT6 - 32MHz Cortex-M0+ MCU | STMicroelectronics
MPN： STM32L071KBT6 ✓ 啟用中STM32L071KBT6 概覽
An ultra-low-power microcontroller is designed to minimize energy consumption during active operation, sleep, and low-power modes. The STM32L0 series belongs to the hierarchy of embedded MCU, Arm Cortex-M processor, 32-bit microcontroller, and power-managed semiconductor solutions. This combination makes it useful where battery life, compact construction, and deterministic control are more important than maximum compute throughput.
The STM32L071KBT6 operates at up to 32 MHz and includes 128 KB of programmable Flash organized as 128K x 8. Its 32-LQFP package provides 32 external pins and is suitable for conventional surface-mount PCB assembly. The device supports 2.5 V and 3.3 V supply arrangements, a 12-bit ADC, and an operating temperature range from -40°C to +85°C.
Arm Cortex-M0+ architecture gives the device a compact instruction set suited to control loops, peripheral configuration, and interrupt-driven embedded software. The STM32L0 feature set targets low-energy designs without requiring a high-pin-count package. Pin assignment and peripheral multiplexing should be checked against the STM32L071KB datasheet before assigning analog, debug, clock, or communication functions to specific pins.
Typical applications include battery-powered sensor nodes, compact industrial monitoring equipment, low-power IoT endpoints, building-control modules, compact consumer accessories, and small motor or actuator controllers. The combination of Cortex-M0+ processing, 128 KB Flash, low-power design goals, and a 32-pin package supports firmware-rich products with controlled board area.
When designing around the STM32L071KBT6, select decoupling capacitors according to the datasheet power-supply recommendations, preserve the required clock and boot configuration, and route debug signals for reliable firmware recovery. Low-power performance also depends on firmware: disable unused peripherals, use suitable sleep modes, and avoid leaving GPIO pins floating on inputs.
This product record combines manufacturer product information, package and memory details, engineering-oriented design guidance, and a strict same-footprint comparison of STM32L071 family options. It helps engineers distinguish flash-density and ordering variants before committing a PCB layout or production BOM.
直接替換替代品，適用於 STM32L071KBT6 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
STM32L071KCT6
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
STM32L071KAT6
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
STM32L071K8T6
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
STM32L071K6T6
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
STM32L071K4T6
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
STM32L071KBT6 最大額定值與電氣特性
| Product Type | 32-bit ultra-low-power microcontroller (MCU) |
| CPU Core | Arm Cortex-M0+ |
| CPU Architecture | 32-bit RISC |
| Maximum CPU Frequency | 32 MHz |
| Flash Memory | 128 KB |
| Flash Organization | 128K x 8 bits |
| 供應電壓 | 2.5 V or 3.3 V |
| ADC Resolution | 12 bits |
| 封裝 | 32-pin LQFP, 7 x 7 mm |
| 腳位數 | 32 pins |
| 安裝類型 | Surface-mount |
| 工作溫度 | -40°C to +85°C |
| Product Series | STM32L0 |
| Product Line | STM32L071 |
| Manufacturer | STMicroelectronics |
STM32L071KBT6 32-pin lqfp, 7 x 7 mm 腳位配置指南
STM32L071KBT6（32-pin lqfp, 7 x 7 mm 封裝）的腳位配置。 此數位 IC 包含 GPIO、通訊介面（UART、SPI、I2C）與電源腳位。替代腳位功能與配置選項請參閱製造商資料表。對嵌入式系統設計與 PCB 佈局至關重要。
無詳細腳位定義資料： STM32L071KBT6.
請參閱 資料表 以查看完整腳位配置。
典型應用
STM32L071KBT6 適用於 6 應用s: Battery-Powered IoT Sensor Node, Industrial Environment Monitor, Low-Power Building Control Module, Compact Data Acquisition Controller, Compact Motor and Actuator Controller, Portable Consumer Accessory.
Battery-Powered IoT Sensor Node
The STM32L071KBT6 fits a compact sensor node that periodically measures an analog signal, evaluates the result, and transmits data before returning to a low-power state. Its Arm Cortex-M0+ core runs at up to 32 MHz, while 128 KB of Flash provides space for the acquisition, filtering, communications, and power-management firmware required by a connected node. The 32-pin LQFP package also keeps the footprint practical for small, densely populated boards. A 12-bit ADC supports sensor conditioning, and the -40°C to +85°C operating range suits industrial equipment. Final battery-life performance depends on selecting the correct low-power mode, disabling unused peripherals, and accounting for the current draw of the sensor and communications subsystem.
推薦
Industrial Environment Monitor
The STM32L071KBT6 is appropriate for an industrial environment monitor that combines sensor acquisition, local filtering, status indication, and a serial communications link. Its 32 MHz Cortex-M0+ processor provides enough control performance for scheduled measurements and event-driven peripheral handling, while the 12-bit ADC supports common industrial sensor interfaces. Operation across -40°C to +85°C supports deployment in temperature-controlled equipment and protected outdoor enclosures. The 128 KB Flash capacity allows a bootloader, application firmware, and configuration data to coexist when sizing permits. Designers should use the manufacturer pin-definition table to allocate ADC channels, communication interfaces, debug signals, and supply pins without conflicting with alternate functions.
推薦
Low-Power Building Control Module
The STM32L071KBT6 can serve a connected building-control module responsible for reading inputs, driving outputs, and coordinating low-power operation. Its Cortex-M0+ architecture at up to 32 MHz is well matched to deterministic control tasks, and 128 KB of Flash can hold application logic, update handling, and communication protocols. The 32-LQFP package simplifies assembly into equipment with moderate pin requirements, while 2.5 V or 3.3 V operation supports common embedded power arrangements. A practical design should limit unused GPIO leakage, use a suitable low-power mode during inactivity, and validate the MCU supply under transient conditions. Firmware should also support recovery paths because an unrecoverable firmware fault can interrupt remote building-control functions.
推薦
Compact Data Acquisition Controller
The STM32L071KBT6 suits a compact data-acquisition controller that samples analog inputs, applies calibration, and transfers results to a host or secondary controller. The integrated 12-bit ADC supports moderate-resolution measurement, while the 32 MHz Cortex-M0+ core can service sampling timers, interrupts, data movement, and communication tasks. With 128 KB of Flash, the device can accommodate application code, calibration tables, and a compact communication stack when final firmware size permits. The 32-pin LQFP 7 x 7 mm package exposes the required I/O without moving to a larger high-pin-count package. Board design should provide clean analog and digital return paths, place input filtering close to the source, and follow the manufacturer grounding recommendations to prevent switching activity from degrading measurement quality.
推薦
Compact Motor and Actuator Controller
The STM32L071KBT6 can control a small motor, valve, or actuator where the system prioritizes low power and a compact controller footprint. Its 32 MHz Cortex-M0+ core is suitable for timer-based control loops, input debouncing, limit detection, and communication with an upper-level controller. The 32-LQFP package provides dedicated GPIO and timer resources for typical actuator interfaces while supporting a 2.5 V or 3.3 V operating arrangement. The 128 KB Flash capacity allows control code, state handling, and diagnostic routines to share one device when firmware sizing permits. Exact pin assignment must be checked against the STM32L071KB datasheet, particularly for timer channels, debug functions, and alternate-function selection.
推薦
Portable Consumer Accessory
The STM32L071KBT6 is suitable for a portable accessory that coordinates buttons, indicators, sensors, and a low-speed communications interface. Its Cortex-M0+ core at up to 32 MHz handles user input, status logic, and protocol processing without moving to a higher-performance MCU platform. The 128 KB Flash capacity supports a compact application and communication stack, while the 32-pin LQFP package provides an established surface-mount assembly option. For battery-powered operation, firmware should enter an appropriate low-power state when the accessory is idle and ensure that unused inputs cannot float. Product developers should verify the exact peripheral mix, pin multiplexing, and package outline in the manufacturer documentation before releasing the PCB.
推薦
推薦產品摘要
工程參考資料，適用於 STM32L071KBT6 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | STM32L071KCT6 | STM32L071KAT6 | STM32L071K8T6 | STM32L071K6T6 | STM32L071K4T6 |
|---|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | LQFP-32 (7 x 7 mm) | LQFP-32 (7 x 7 mm) | LQFP-32 (7 x 7 mm) | LQFP-32 (7 x 7 mm) | LQFP-32 (7 x 7 mm) | LQFP-32 (7 x 7 mm) |
| CPU Core | Arm Cortex-M0+ | Arm Cortex-M0+ | Arm Cortex-M0+ | Arm Cortex-M0+ | Arm Cortex-M0+ | Arm Cortex-M0+ |
| Maximum CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Flash Memory | 128 KB | 256 KB | 64 KB | 64 KB | 32 KB | 16 KB |
| ADC Resolution | 12 bits | 12 bits | 12 bits | 12 bits | 12 bits | 12 bits |
主要差異化特點
- Provides a balanced 128 KB Flash configuration (對比STM32L071K6T6)
- Retains sufficient Flash without using the highest-density ordering option (對比STM32L071KCT6)
- Combines a 32 MHz Cortex-M0+ core with an industrial-temperature range (對比STM32L071K4T6)
設計說明
Design the supply network around the STM32L071KBT6 using the voltage and decoupling requirements in the manufacturer datasheet. Place the required bulk and high-frequency capacitors close to the appropriate supply pins, keep analog and digital return paths controlled, and verify startup behavior across the full 2.5 V or 3.3 V operating arrangement. This matters because transient supply excursions can affect execution, ADC measurements, and low-power-state transitions even when the nominal voltage is correct.
Reserve the complete 32-pin LQFP land pattern and follow the manufacturer package drawing for copper, solder mask, and thermal-pad treatment. Confirm each peripheral assignment in the pin-description table because alternate functions can constrain simultaneous ADC, timer, communication, and debug use. Keep programming and debug access reachable during validation, and avoid placing high-current switching paths beneath sensitive analog inputs or the MCU supply return.
Do not assume that every STM32L071 ordering code is electrically and software interchangeable. The listed alternatives retain the LQFP-32 footprint, but their Flash capacities differ from the target's 128 KB. Check application size, linker placement, boot requirements, peripheral configuration, temperature grade, and shipment format before approving a substitution. A lower-memory option may fit the footprint yet still be unable to hold the production firmware image.
For a low-power design, calculate average consumption from the MCU operating current, sleep current, wake frequency, and the duty cycle of attached loads. Disable unused peripherals and configure unused GPIO inputs to avoid unwanted current consumption. The STM32L0 low-power modes are valuable only when the firmware also prevents frequent wakeups, short busy periods, and peripherals that remain active during sleep.
合規資訊
The manufacturer product page and distribution summaries do not state the requested compliance status. Confirm RoHS, REACH, AEC-Q100, lead-free, halogen-free, and conflict-minerals declarations for the exact ordering code before production release.