STM32L010K4T6 - 32MHz Cortex-M0+ MCU 16KB | STMicroelectronics
MPN： STM32L010K4T6 ✓ 啟用中STM32L010K4T6 概覽
What is an ultra-low-power microcontroller? An ultra-low-power MCU (often called ULP MCU) is a microcontroller architected around deep sleep modes in which most analog and digital peripherals are gated off, the CPU is stopped, and current consumption can drop to the nanoampere range. These parts target battery-powered and energy-harvesting designs where the average sleep current, not the active current, dominates battery life. The STM32L010 sits at the entry level of the STM32L0 family, descending from STMicroelectronics' broader STM32 32-bit MCU family that also includes mainstream (F0/F1/F3), high-performance (F4/F7/H7), and wireless (WB/WL) lines.
Key features that differentiate the K4 from siblings in the L0 line include the inclusion of 128 bytes of true EEPROM (rare for STM32 and useful for storing calibration or user settings without page-erase wear on Flash), 4 KB of usable SRAM after bootloader reservation, an extended temperature range of -40 C to +85 C, and four low-power modes (Sleep, Low-power sleep, Stop with RTC, and Standby). The integrated 12-bit ADC supports hardware oversampling, enabling up to 16-bit equivalent resolution for sensor measurements in slow-moving signals such as temperature, light, or battery voltage.
At the architectural level, the Cortex-M0+ core uses the Thumb-2 instruction subset optimized for code density, single-cycle I/O via the ARMv6-M architecture, and a Nested Vectored Interrupt Controller (NVIC). The part is supplied in a 32-pin LQFP package (7x7 mm body) which keeps the PCB footprint compact while leaving enough GPIO for typical embedded designs. The K4 suffix maps to a 32-pin LQFP package; the F4 variant ships the same die in a 20-pin TSSOP for tighter boards.
Typical applications include battery-powered IoT sensor nodes, smart meters, wearables, remote controls, and any ultra-low-power embedded design that needs true 32-bit performance with sub-microamp standby. The compact 32-pin LQFP footprint and ST-supplied ecosystem (CubeMX, HAL, STM32CubeIDE, and the X-CUBE-ULP Expansion Package) reduce time to prototype.
When designing with this part, pay attention to the stop-mode current budget and decoupling. Two 100 nF ceramic caps must be placed within 2 mm of VDD/VDDA, plus a 1 uF bulk cap on the regulator input; the NRST pin requires a 10 kohm pull-up and a 100 nF cap for a reliable reset, and the BOOT0 pin must be tied low for normal Flash boot. Estimated power-down current in Standby with RTC running is typically under 1 uA, allowing coin-cell designs to last years.
This page synthesizes distributor pricing, drop-in alternatives within the same 32-pin LQFP footprint, and practical design notes not assembled in the ST datasheet alone.
直接替換替代品，適用於 STM32L010K4T6 — 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。
此系列的變體
與下列產品可直接替換的同系列型號： STM32L010K4T6 （相同外形與佔位） — 差異在於 Package, Flash Memory, Maximum CPU Frequency, RoHS Status, SRAM.
STM32L011K4T6
✅ 直接替換聯絡詢價
查看資料表 →STM32L031K6T6
✅ 直接替換聯絡詢價
查看資料表 →STM32L010K4U6
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
STM32L010K8T6
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →STM32L051K8T6
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →STM32F031K6T6
✅ 直接替換聯絡詢價
查看資料表 →GD32E230K6T6
✅ 直接替換📋 參考替代品（不在目錄中）
STM32L010K4T6 最大額定值與電氣特性
| Core Architecture | ARM Cortex-M0+ 32-bit RISC |
| Maximum CPU Frequency | 32 MHz |
| Flash Memory | 16 KB (16K x 8) |
| EEPROM (User) | 128 bytes |
| 供應電壓 | 1.65 V to 3.6 V |
| ADC | 1 x 12-bit ADC with hardware oversampling |
| Timers | 2 x 16-bit general-purpose, 1 x LPTIM, 1 x RTC, 1 x SysTick |
| Watchdogs | Independent watchdog + window watchdog |
| Communication Peripherals | I2C, SPI, USART |
| 工作溫度 | -40 C to +85 C |
| 封裝 | 32-LQFP 7x7 mm |
| 安裝類型 | Surface Mount |
| MSL 等級 | MSL3 (per JEDEC J-STD-020, 168 hours) |
| RoHS 狀態 | Compliant |
STM32L010K4T6 腳位配置
| 腳位 1 | PB7 — GPIO port B bit 7 |
| 腳位 2 | BOOT0 — Boot mode select (tie low for Flash boot) |
| 腳位 3 | PB6 — GPIO port B bit 6 |
| 腳位 4 | PB5 — GPIO port B bit 5 |
| 腳位 5 | PB4 — GPIO port B bit 4 |
| 腳位 6 | PB3 — GPIO port B bit 3 |
| 腳位 7 | PA15 — GPIO port A bit 15 / SPI NSS |
| 腳位 8 | VSS — Digital ground |
| 腳位 9 | VDD — Digital supply (1.65 V to 3.6 V) |
| 腳位 10 | PA8 — GPIO port A bit 8 |
| 腳位 11 | PA9 — GPIO port A bit 9 / USART1 TX |
| 腳位 12 | PA10 — GPIO port A bit 10 / USART1 RX |
| 腳位 13 | PA11 — GPIO port A bit 11 |
| 腳位 14 | PA12 — GPIO port A bit 12 |
| 腳位 15 | PA13 — SWDIO - serial wire debug data |
| 腳位 16 | PA14 — SWCLK - serial wire debug clock (BOOT0 not used on this pin, see bootloader note) |
| 腳位 17 | VSS — Digital ground |
| 腳位 18 | VDD — Digital supply (1.65 V to 3.6 V) |
| 腳位 19 | OSC_IN — External oscillator input (optional HSE) |
| 腳位 20 | OSC_OUT — External oscillator output (optional HSE) |
| 腳位 21 | NRST — Reset input, active low (10 kohm pull-up + 100 nF cap) |
| 腳位 22 | VSSA — Analog ground (tie to VSS) |
| 腳位 23 | VDDA — Analog supply (1.65 V to 3.6 V, decouple with 100 nF + 1 uF) |
| 腳位 24 | PA0 — GPIO port A bit 0 / ADC IN0 / WKUP1 |
| 腳位 25 | PA1 — GPIO port A bit 1 / ADC IN1 |
| 腳位 26 | PA2 — GPIO port A bit 2 / ADC IN2 / USART2 TX |
| 腳位 27 | PA3 — GPIO port A bit 3 / ADC IN3 / USART2 RX |
| 腳位 28 | PA4 — GPIO port A bit 4 / ADC IN4 / SPI NSS |
| 腳位 29 | PA5 — GPIO port A bit 5 / ADC IN5 / SPI SCK |
| 腳位 30 | PA6 — GPIO port A bit 6 / ADC IN6 / SPI MISO |
| 腳位 31 | PA7 — GPIO port A bit 7 / ADC IN7 / SPI MOSI |
| 腳位 32 | PB0 — GPIO port B bit 0 / ADC IN8 (per package option) |
典型應用
STM32L010K4T6 適用於 7 應用s: Battery-Powered IoT Sensor Nodes, Smart Metering and Utility Endpoints, Wearable Health Monitors, Remote Controls and Wireless Key Fobs, Industrial Sensor Transmitters, Consumer Electronics and Home Appliance Controls, Asset Trackers and GPS Beacons.
Battery-Powered IoT Sensor Nodes
The STM32L010K4T6 is well suited for battery-powered IoT sensor nodes thanks to its sub-1 uA Standby current with RTC active and its 16-bit oversampling ADC for sensor measurements. The Cortex-M0+ core running at 32 MHz can wake periodically, take a temperature or humidity reading via the 12-bit ADC with HW oversampling, transmit via the integrated SPI or I2C peripheral, and return to deep Standby in microseconds. With the 32-LQFP footprint, design layout fits within 7x7 mm of board area, leaving room for a coin-cell holder and BLE module at the antenna edge.
推薦
Smart Metering and Utility Endpoints
Smart metering endpoints demand years of battery life and tamper detection, both of which the STM32L010K4T6 supports. The 128-byte user EEPROM stores calibration constants without Flash wear. Its low-power Run mode (around 110 uA/MHz) keeps active current budget tight while pulse counting via the LPTIM. The integrated RTC with calendar plus Stop-with-RTC mode enables scheduled hourly wakeups from a single AA battery. Designers can rely on the 32-LQFP package for surface-mount manufacturing and on ST's ULPMark benchmark data for accurate energy modeling.
推薦
Wearable Health Monitors
Wearable health monitors (heart-rate straps, step counters, sleep trackers) need sub-microamp Standby plus a fast wake to sample a sensor and stream over BLE. The STM32L010K4T6's Cortex-M0+ at 32 MHz handles the BLE event handler state machine while Stop mode with RTC keeps idle current under 1 uA. The 12-bit ADC with hardware oversampling permits 16-bit equivalent resolution for ECG or pulse-oximeter front-ends at slow sample rates. With its 7x7 mm 32-LQFP form, the MCU footprint drops below 50 mm-squared with discrete passives, leaving room for a coin-cell and a small Li-Po jelly-tab.
推薦
Remote Controls and Wireless Key Fobs
Battery-powered RF key fobs and remote controls rely on ultra-low standby and instant wake from button press. The STM32L010K4T6's Standby current under 1 uA with RTC plus 16-bit timer wakeup matches the duty cycle of a typical TV remote (push to wake, transmit, sleep). The integrated 32-LQFP package is small enough for a single-PCB key fob but exposes enough GPIO for a 5-way navigation button matrix plus an IR LED driver. The Cortex-M0+ core handles button debounce, IR encoding, and the RF state machine at 32 MHz with overhead.
推薦
Industrial Sensor Transmitters
Industrial 4-20 mA loop-powered sensor transmitters and RS-485 sensor nodes run from tight power budgets and need precise ADC sampling. The STM32L010K4T6 delivers a 12-bit ADC with hardware oversampling for 16-bit equivalent accuracy on slow thermocouple or RTD signals. Its -40 C to +85 C industrial temperature range handles factory floor conditions, and the 32-LQFP package supports surface-mount manufacturing lines. With Cortex-M0+ at 32 MHz the MCU can host the Modbus RTU state machine and a 4-20 mA current loop driver with comfortable headroom.
推薦
Consumer Electronics and Home Appliance Controls
Consumer appliances (coffee machines, dishwashers, air purifiers) need robust button-matrix scanning, LED driving, and quiet motor control at low BOM cost. The STM32L010K4T6 drives a 7-segment LED display directly via its GPIO plus timer PWM, while the Cortex-M0+ runs the user interface state machine. The 7x7 mm 32-LQFP footprint is small enough for a sub-$3 BOM and the part's extended industrial temperature grade handles the inside of a dishwasher or stovetop hood. The integrated I2C and USART ease interfacing to sensor modules.
推薦
Asset Trackers and GPS Beacons
Asset trackers that wake, fix a GPS position, transmit over LTE-M or LoRa, then sleep rely on extremely tight Standby current. The STM32L010K4T6's <1 uA Standby with RTC plus Stop-mode GPIOs for wake fits a monthly-reporting asset tag running off a single CR2032 cell. The Cortex-M0+ at 32 MHz post-wake drives the GPS module over UART and the cellular modem over UART or SPI. The 32-LQFP 7x7 mm package and integrated high-speed timers suit time-sync for GNSS accuracy.
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推薦產品摘要
工程參考資料，適用於 STM32L010K4T6 — 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 | STM32L011K4T6 | STM32L031K6T6 | GD32E230K6T6 | STM32F031K6T6 |
|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | GigaDevice | STMicroelectronics |
| Package | 32-LQFP 7x7 mm | 32-LQFP 7x7 mm - same | 32-LQFP 7x7 mm - same | 32-LQFP 7x7 mm - same | 32-LQFP 7x7 mm - same |
| Core | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M0+ | ARM Cortex-M23 | ARM Cortex-M0 |
| Maximum Frequency | 32 MHz | 32 MHz | 32 MHz | 72 MHz | 48 MHz |
| Flash Memory | 16 KB | 16 KB | 32 KB | 32 KB | 32 KB |
| User EEPROM | 128 bytes | 128 bytes | 128 bytes | no true EEPROM | no true EEPROM |
| Supply Voltage | 1.65 V to 3.6 V | 1.65 V to 3.6 V | 1.65 V to 3.6 V | 2.6 V to 3.6 V (typical GD32 spec; verify from datasheet) | 2.0 V to 3.6 V |
| Ultra-Low Power (Stop/Standby) | Yes (sub-uA Standby) | Yes (sub-uA Standby) | Yes (sub-uA Standby) | Limited (Mainstream line, higher sleep current) | Limited (Mainstream F0, less low-power) |
主要差異化特點
- Includes user EEPROM with byte-erase (對比GD32E230K6T6)
- Sub-microamp Standby current with full SRAM retention (對比STM32F031K6T6)
- Cortex-M0+ with Thumb-2 instructions at lower cost (對比STM32L051K8T6)
設計說明
Estimated sleep-mode power budget: with RTC active in Standby mode the STM32L010K4T6 typically draws <1 uA at 3.0 V per the manufacturer datasheet. For a CR2032 coin cell (220 mAh rated), this equates to roughly 8 years of Standby without RTC events, or 4-5 years with hourly RTC wakes. Place a 1 uF bulk cap on VDD and a 100 nF on each VDD/VDDA pair within 2 mm of the pin to avoid inrush-induced resets on wake.
Use a 4-layer stack-up with a continuous ground plane under the 32-LQFP footprint. Place the BOOT0 pin either to ground with a 10 kohm resistor or to VDD through a push-button for bootloader entry during board bring-up. The NRST pin requires a 10 kohm pull-up to VDD and a 100 nF cap for reliable reset; do not omit the cap or the part may not come up cleanly on power-on or brown-out. Keep noisy analog and digital traces separated; the analog VDDA pin must be decoupled with 100 nF + 1 uF ceramic caps close to the pin.
Common pitfalls: (1) BOOT0 left floating - tie low for normal boot; (2) VDDA not powered when VDD is - both must ramp together; (3) SWD pins reused as GPIO without considering debugger loss - provision test points; (4) using the HSE crystal with too high ESR - the K4 is rated for low-ESR 8 MHz crystals per the datasheet; (5) ignoring the option-byte configuration of IWDG and WWDG at reset - they may default on and cause unexpected resets if not properly serviced.
The 32-LQFP package lead frame is short enough that signal-integrity concerns for digital GPIO are minimal at 32 MHz. However, on the analog side, the ADC inputs PA0-PA7 should be routed as short as possible, with a small RC filter (10 ohms + 100 pF) for hostile environments. Enable the ADC hardware oversampling feature for high-resolution temperature or battery-voltage measurements, which avoids the need for an external 16-bit ADC.
合規資訊
STMicroelectronics STM32L010K4T6 is RoHS compliant and lead-free (Pb-free reflow-compatible). Not AEC-Q100 qualified - choose the automotive-grade STM32L010K4T6A or STM32F0/F4 family for vehicular use. MSL3 moisture sensitivity per JEDEC J-STD-020 (168-hour floor life).
