STM8L151K6U3 - 16MHz 32KB Ultra-Low-Power MCU | STMicroelectronics
MPN： STM8L151K6U3 ✓ 啟用中STM8L151K6U3 概覽
An ultra-low-power microcontroller is an embedded semiconductor designed to complete control tasks while minimizing energy consumption between active processing intervals. In the system hierarchy, the STM8L151K6U3 belongs to the microcontroller class, within embedded processors and power-conscious embedded control. Its combination of Flash program memory, data EEPROM, real-time-clock capability, LCD support, timers, USART, I2C, SPI, ADC, DAC, and comparators allows one device to consolidate several discrete functions on a small PCB.
Verified feature information identifies up to 32 KB Flash, 1 KB data EEPROM, RTC, LCD, timers, USART, I2C, SPI, ADC, DAC, and comparators. The distributor record also confirms 8-bit operation, a 16 MHz maximum frequency, and 32 KB organized as 32K × 8. These resources suit firmware that includes user-interface updates, sensor acquisition, local data logging, communication, timekeeping, and low-power state management without requiring a separate real-time clock or interface-conversion circuitry.
The STM8L151K6U3 belongs to STMicroelectronics' STM8L low-power architecture rather than the ARM-based STM32 families. That distinction matters when replacing it: software, instruction set, peripheral implementation, and toolchain assumptions may differ even when another microcontroller offers similar nominal features. ST's product page identifies the medium-density STM8L151x4/6 devices, allowing engineers to distinguish the target from lower-density STM8L151x2/3 parts when planning a redesign.
Typical applications include battery-powered utility meters, compact environmental sensors, industrial control modules, wearable accessories, instrument panels, and connected sensor nodes. The target's integrated ADC and comparators suit local analog monitoring, while USART, I2C, and SPI support external sensors, transceivers, displays, and data loggers. The RTC is useful for time-stamped measurements and scheduled low-power operation, although exact current, voltage, timer, ADC, and package-registration details must be taken from the manufacturer documentation.
PCB implementation should follow the exact 32-pin UFQFPN land pattern and exposed-pad requirements in the manufacturer package information. Place decoupling capacitors close to supply pins, route sensitive analog inputs away from fast-switching nodes, and confirm thermal-pad soldering against the assembly process. Firmware and peripheral configuration should also use STMicroelectronics' STM8 toolchain rather than assuming STM32 compatibility.
This product record combines verified manufacturer positioning, distributor specifications, sourcing links, interface coverage, and replacement-risk guidance. It is intended to accelerate engineering evaluation while clearly separating confirmed facts from parameters that still require confirmation from the official datasheet.
直接替換替代品，適用於 STM8L151K6U3 — 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： STM8L151K6U3 （相同外形與佔位） — 差異在於 LCD Support, Flash Memory, Series, ADC, Comparators.
STM8L152K6U6
✅ 直接替換聯絡詢價
查看資料表 →STM8L151K6U3 最大額定值與電氣特性
| Product Type | 8-bit ultra-low-power microcontroller |
| Series | STM8L EnergyLite |
| Maximum CPU Frequency | 16 MHz |
| CPU Architecture | 8-bit |
| Flash Memory | 32 KB (32K × 8 bits) |
| Data EEPROM | 1 KB |
| 封裝 | 32-pin UFQFPN, 5 mm × 5 mm |
| 安裝類型 | Surface mount |
| Real-Time Clock | Supported |
| LCD Support | Supported |
| Timers | Supported; count and configuration not provided |
| USART | Supported; count and variants not provided |
| I2C | Supported; count and variants not provided |
| SPI | Supported; count and variants not provided |
| ADC | Supported; resolution and channel count not provided |
| DAC | Supported; channel count and resolution not provided |
| Comparators | Supported; count and electrical details not provided |
STM8L151K6U3 32-pin ufqfpn, 5 mm × 5 mm 腳位配置指南
STM8L151K6U3（32-pin ufqfpn, 5 mm × 5 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： STM8L151K6U3.
請參閱 資料表 以查看完整腳位配置。
典型應用
STM8L151K6U3 適用於 6 應用s: Battery-Powered Utility Meter, Environmental Sensor Node, Compact Industrial Control Module, Digital Thermometer and Panel Controller, Wearable Accessory Controller, Data Logger with Serial Gateway.
Battery-Powered Utility Meter
STM8L151K6U3 fits a compact utility-meter controller because it combines a 16 MHz 8-bit core, 32 KB Flash, 1 KB data EEPROM, and an RTC in one low-power MCU. The ADC and comparators can monitor a sensor input, while timers support periodic sampling. USART, I2C, or SPI can connect a communications modem or local storage device. The EEPROM can retain counters and configuration data. Battery life cannot be estimated responsibly until the manufacturer confirms active and sleep current, wake-up time, regulator efficiency, and analog acquisition timing.
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Environmental Sensor Node
The STM8L151K6U3 is appropriate for an environmental sensor node that periodically converts analog measurements and reports them over a serial link. Its ADC supports sensor acquisition, its comparators can provide threshold events, and its 32 KB Flash accommodates a compact embedded application. I2C is suitable for many digital sensors, while SPI supports higher-throughput devices. USART can provide a simple host or radio interface. Firmware should schedule acquisition and communication around the MCU's confirmed low-power states, and analog accuracy must be checked against the sensor and required measurement range.
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Compact Industrial Control Module
STM8L151K6U3 can serve as the local controller in a compact industrial module when the design needs deterministic digital control plus limited analog supervision. Timers can implement fixed-period tasks, comparators can monitor thresholds, and USART, I2C, and SPI provide paths to sensors, memory, and downstream logic. The 32-pin 5 mm × 5 mm UFQFPN package supports compact board construction. Industrial qualification does not follow from the MCU family alone, so the engineer must verify temperature grade, supply limits, ESD performance, watchdog behavior, isolation strategy, and lifecycle commitments from official documentation.
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Digital Thermometer and Panel Controller
STM8L151K6U3 aligns with a low-power instrument panel that acquires a sensor value, keeps time, drives a display, and exposes a service interface. Its ADC handles analog sensing, RTC supports timestamps and periodic updates, and LCD support is explicitly listed in the verified feature set. The DAC can generate a reference or test output when required, while USART supports configuration or logging. Keep LCD and switching activity outside precision analog regions, and use the verified package drawing to plan decoupling, exposed-pad soldering, and analog grounding.
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Wearable Accessory Controller
STM8L151K6U3 is suitable for a wearable accessory when the design values compactness, local sensing, and scheduled operation. The MCU's ultra-low-power positioning, 16 MHz processing capability, 32 KB Flash, RTC, and 1 KB EEPROM provide enough resources for gesture input, simple health-related sensing, event counting, or status display. USART or I2C can connect a host or sensor, and comparators can handle simple threshold events. Battery performance remains unverified because no current-consumption figures were supplied, so platform-level power profiling is mandatory.
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Data Logger with Serial Gateway
STM8L151K6U3 can form the control core of a compact data logger because it combines local Flash program storage, EEPROM data retention, an RTC, and three named serial-interface families. A sensor can connect through I2C or SPI, local events can be time-stamped, and an external gateway can be attached through USART. The 32-pin UFQFPN outline helps reduce board area, while the ADC can monitor a battery or analog input. Real firmware should account for flash endurance, write timing, watchdog recovery, data buffering, and confirmed sleep-state entry conditions.
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推薦產品摘要
工程參考資料，適用於 STM8L151K6U3 — 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 | STM8L152K6U6 |
|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics |
| Package | 32-pin UFQFPN, 5 mm × 5 mm | 32-pin UFQFPN, 5 mm × 5 mm |
| Communication Interfaces | USART, I2C and SPI supported | USART, I2C and SPI supported |
| Verified Drop-In Status | Target device | Candidate requiring exact pin and function validation |
主要差異化特點
- Confirmed device-level resource integration (對比STM8L152K6U6)
- Exact manufacturer family identification (對比STM8L152K6U6)
- Compact 32-pin surface-mount implementation (對比Non-32-pin STM8L alternatives)
設計說明
Use the exact 32-pin UFQFPN 5 mm × 5 mm land pattern from the current STMicroelectronics package drawing. The supplied search data establishes the package dimensions and pin count but does not provide terminal numbering or exposed-pad geometry. Confirm pin 1 orientation, pin pitch, pad dimensions, thermal-pad connection, solder-mask clearance, and paste pattern before releasing artwork; do not infer them from a generic QFN footprint.
Place every required decoupling capacitor directly between the appropriate MCU supply pin and ground, with the shortest practical return path. Because no supply-voltage range, current budget, internal-regulator topology, or power-mode current was provided, follow the official layout and capacitor values rather than copying an unrelated STM8 board. Validate brownout behavior, startup current, analog-supply filtering, and ADC reference stability in hardware.
Separate analog and digital return paths where the application permits, keep ADC and comparator inputs away from LCD drive lines, SPI edges, and switching nodes, and provide a quiet reference plane. Route high-current loads outside the MCU footprint area and keep the exposed pad thermal path unobstructed. The presence of LCD, DAC, ADC, and comparators makes analog-noise partitioning particularly important even though exact impedance and layout dimensions are not available.
Do not treat STM8L152K6U6 or another related-family MCU as a drop-in part without comparing every pin, alternate function, power pin, ground connection, reset behavior, boot configuration, and exposed pad. Also do not assume STM32 source code or peripheral registers are reusable. After any substitution, rebuild the pin map, startup code, linker configuration, interrupt vectors, low-power state machine, and board-validation tests.
Battery-life calculations require measured or datasheet-confirmed active current, sleep current, wake-up latency, RTC behavior, and the selected sensor load. The supplied data calls STM8L151K6U3 ultra-low-power but does not provide those values. Use current profiling at the relevant operating points and include regulator quiescent current, pull networks, LCD load, and communication duty cycle in the calculation.
合規資訊
The supplied verified manufacturer and distributor snippets do not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. Obtain current declarations from STMicroelectronics before production release.
