STM8L151K4U6 - 16MHz 16KB Flash 8-Bit MCU | STMicroelectronics
料号： STM8L151K4U6 ✓ 量产中STM8L151K4U6 概述
An ultra-low-power microcontroller is an integrated circuit optimized to complete control tasks while consuming as little energy as possible during active operation, sleep, and deeper low-power states. This makes the STM8L architecture useful for battery-powered sensors, compact industrial controls, connected measurement equipment, and consumer products that must operate for long periods without continuous external power. The STM8L family belongs to the broader hierarchy of 8-bit microcontroller, embedded controller, processor, and semiconductor product categories.
The STM8L151K4U6 combines 16 KB Flash with a maximum 16 MHz system clock in a 5 mm by 5 mm UFQFPN package. Its listed peripherals include timers, USART, I2C, SPI, ADC, DAC, comparators, an RTC, and 1 KB data EEPROM. The integrated LCD capability supports segment-based human-interface designs, while the ADC and comparators allow the device to process analog sensor signals without requiring separate interface components. Its 41 I/O ports provide substantial interface flexibility within a compact footprint.
The STM8L151x4/6 product family is structured around an 8-bit embedded-control architecture designed for energy-efficient operation. Its combination of serial interfaces supports connections to displays, sensors, transceivers, data converters, and other embedded peripherals. The timer and real-time-clock functions enable periodic measurement, event timing, and low-duty-cycle acquisition, while the analog peripherals support thresholding, signal conditioning, and monitoring functions.
Typical applications include battery-operated environmental sensors, compact industrial monitoring modules, low-power data loggers, LCD-driven meters, wearable accessories, appliance control boards, and connected industrial nodes. The device is particularly suitable when a compact 8-bit controller, moderate Flash capacity, and multiple communication interfaces are more appropriate than a higher-cost application processor. Its low operating-voltage range also supports energy harvesting and coin-cell powered designs when the external sensor load permits.
Designers should verify the exact pin functions, exposed-pad connection, decoupling requirements, clock configuration, and low-power state transitions in the manufacturer datasheet before layout release. Keep the power and ground connections compact, route sensitive analog inputs away from fast digital signals, and confirm that firmware drivers match the selected package and peripheral set. The UFQFPN body is compact but its fine-pitch footprint still requires controlled solder mask, paste, and assembly processes.
This product summary combines the manufacturer family description with distributor specification, package, lifecycle, and interface information. It also organizes drop-in alternatives, application guidance, and engineering considerations so engineers can assess the STM8L151K4U6 against the same-package STM8L family options without relying on a single distributor listing.
直接替换替代料： STM8L151K4U6 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： STM8L151K4U6 （相同外形与封装尺寸） ——差异在于 Flash Memory, Package, LCD Support, Product Family, Real-Time Clock.
STM8L151K6U6
✅ 直接替换联系询价
查看数据手册 →STM8L152K4U6
✅ 直接替换 ⚠️ 规格未核验联系询价
查看数据手册 →STM8L152K6U6
✅ 直接替换联系询价
查看数据手册 →STM8L151K4U6 最大额定值与电气特性
| Product Type | 8-bit ultra-low-power microcontroller |
| Series | STM8L EnergyLite |
| Maximum Clock Speed | 16 MHz |
| Flash Memory | 16 KB |
| Program Memory Organization | 16K x 8 bits |
| Supply Voltage Range | 1.8 V to 3.6 V |
| Data EEPROM | 1 KB |
| I/O Ports | 41 |
| 封装 | 32-pin UFQFPN, 5 mm x 5 mm |
| 安装类型 | Surface mount |
| CPU Bit Width | 8 bits |
| 生命周期状态 | Active |
| Real-Time Clock | Supported |
| LCD Support | Supported |
| Timers | Supported |
| Serial Interfaces | USART, I2C, and SPI |
| Analog Peripherals | ADC, DAC, and comparators |
STM8L151K4U6 32-pin ufqfpn, 5 mm x 5 mm 引脚配置指南
STM8L151K4U6（32-pin ufqfpn, 5 mm x 5 mm 封装）的引脚配置。 该数字 IC 包含 GPIO、通信接口（UART、SPI、I2C）和电源引脚。请参阅制造商数据手册以了解复用引脚功能和配置选项。对嵌入式系统设计和 PCB 布局至关重要。
暂无详细引脚数据： STM8L151K4U6.
请参阅 数据手册 以查看完整引脚配置。
典型应用
STM8L151K4U6 适用于 6 应用s: Battery-Powered Environmental Sensors, Industrial Monitoring Modules, LCD-Equipped Measurement Instruments, Compact Data Loggers, Smart Home Sensor Nodes, Battery-Operated Utility Meters.
Battery-Powered Environmental Sensors
The STM8L151K4U6 fits battery-powered environmental sensors because its 1.8 V to 3.6 V operating range, 16 MHz clock, and ultra-low-power STM8L architecture support compact control platforms. The ADC and comparators can sample or threshold environmental signals, while timers and the real-time-clock capability support periodic acquisition and time-based events. USART, I2C, and SPI provide flexible connections to digital sensors, radio modules, and local storage. Keep the MCU active only during measurement intervals, use the appropriate low-power mode between samples, and account for sensor and regulator consumption when estimating battery life. Firmware and board configuration should be validated against the manufacturer’s low-power and wake-up specifications.
推荐
Industrial Monitoring Modules
The STM8L151K4U6 is suitable for compact industrial monitoring modules that combine sensor acquisition, local thresholds, and serial reporting. Its ADC and comparators support process-variable monitoring, the timers support periodic sampling and events, and the 41 I/O ports provide flexible connections for digital inputs and outputs. USART, I2C, and SPI allow the controller to communicate with industrial sensors, isolated interface modules, or a higher-level gateway. The 5 mm by 5 mm UFQFPN package helps reduce board area, although fine-pitch assembly and exposed-pad construction require careful PCB planning. Confirm the industrial temperature grade and isolation requirements before deployment.
推荐
LCD-Equipped Measurement Instruments
The STM8L151K4U6 suits LCD-equipped measurement instruments because the MCU includes LCD support alongside ADC, timers, real-time-clock capability, and standard serial interfaces. It can acquire a sensor signal, compare it against thresholds, update a segmented display, and communicate the result to a host computer or data logger. The 16 KB Flash capacity supports a focused embedded application, while the 1.8 V to 3.6 V supply range fits low-voltage panel architectures. Because LCD segments, GPIO functions, and communication pins may share package pins, create the pin-assignment matrix before routing the PCB. Verify display timing, bias requirements, and electrical limits in the manufacturer documentation.
推荐
Compact Data Loggers
The STM8L151K4U6 can form the control core of a compact low-power data logger. The ADC and timers support periodic channel sampling, the real-time-clock capability allows events to be time-stamped, and SPI, I2C, or USART can connect to serial flash, external sensors, or a communications module. Its 16 KB Flash is suitable for a focused logger application when firmware and buffering are tightly sized, and its compact UFQFPN footprint supports space-constrained products. External storage and serial transceivers will usually dominate system power and board area. Select a low-power operating mode, control sensor duty cycles, and verify that the final firmware fits the MCU’s available memory.
推荐
Smart Home Sensor Nodes
The STM8L151K4U6 is appropriate for compact smart-home sensor nodes where an 8-bit MCU can handle local sensing, state logic, and low-speed communications. Its low 1.8 V minimum supply voltage can simplify integration with battery or energy-harvesting front ends, while ADC and comparator inputs support physical measurements and digital thresholding. I2C and SPI suit short-range sensors and radio components, and USART provides a straightforward diagnostic or uplink path. Keep standby consumption low by disabling unused peripherals and selecting a suitable STM8L sleep mode. Validate wake sources, retention behavior, and peripheral state transitions in the datasheet before the product enters field testing.
推荐
Battery-Operated Utility Meters
The STM8L151K4U6 can support battery-operated utility meters that periodically measure an analog quantity, time events, and report results through a low-power communications path. The ADC and comparators assist with input conditioning and thresholding, the real-time-clock capability supports time-based records, and USART, I2C, or SPI enables connection to a radio, memory, or service interface. The MCU’s 16 MHz maximum clock and 16 KB Flash are appropriate for a dedicated measurement product with modest firmware. Thermal conditions, display drive, radio duty cycle, and self-discharge will dominate real-world battery performance. Use the exact device datasheet to confirm low-power limits and retentional behavior.
推荐
推荐产品汇总
工程参考数据： STM8L151K4U6 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | STM8L151K6U6 | STM8L152K4U6 | STM8L152K6U6 |
|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 32-pin UFQFPN, 5 mm x 5 mm | 32-pin UFQFPN, 5 mm x 5 mm - same footprint | 32-pin UFQFPN, 5 mm x 5 mm - same footprint | 32-pin UFQFPN, 5 mm x 5 mm - same footprint |
| CPU Architecture | 8-bit | 8-bit | 8-bit | 8-bit |
| Maximum Clock Speed | 16 MHz | 16 MHz | 16 MHz | 16 MHz |
关键差异点
- Target configuration provides 16 KB Flash within a compact 5 mm by 5 mm footprint （对比 STM8L151K6U6)
- Known 16 MHz clock target with an explicit 41-port I/O specification （对比 STM8L152K4U6)
- Documented analog, serial, timing, and display integration （对比 STM8L152K6U6)
设计说明
Design the 32-pin UFQFPN footprint from the exact STMicroelectronics package drawing rather than a generic 32-pin QFN land pattern. Confirm pad dimensions, pitch, solder-mask opening, paste aperture, and exposed-pad geometry for STM8L151K4U6. The fine-pitch package and compact 5 mm by 5 mm body require assembly-process controls, including adequate solder paste volume and inspection coverage. Treat the exposed pad as a thermal and electrical connection according to the manufacturer recommendations rather than leaving it mechanically or electrically undefined.
Place local supply and ground bypass components close to the corresponding UFQFPN power pins and provide a low-impedance return path for every switched current loop. The STM8L151K4U6 operates across 1.8 V to 3.6 V, but the allowable clock speed and peripheral operation can vary with supply voltage and temperature. Review those limits before fixing the system supply voltage. For battery applications, calculate average current from active current, sleep current, wake-up duration, sensor load, regulator quiescent current, and communications duty cycle rather than relying only on the MCU’s stated clock speed.
Keep analog inputs and the ADC reference path away from switching nodes, high-current LED drivers, radio-transmitter supplies, and fast digital clock edges. Use a quiet ground strategy around the analog section and route sensitive nets before committing the remaining layers. Because the package exposes a large number of functions in a small area, build a package-pin matrix before schematic capture to prevent conflicts among LCD segments, communication functions, timers, and GPIO. Verify alternate-function routing and remapping behavior against the exact device documentation.
Do not treat the STM8L151, STM8L152, K4, and K6 identifiers as interchangeable without reviewing the exact ordering information and resource tables. Even when the UFQFPN footprint is unchanged, Flash, SRAM, peripheral availability, interrupt behavior, or device-specific features can affect firmware compatibility. Validate boot programming, clock initialization, low-power wake-up, LCD mapping, and analog calibration on the intended board. Also confirm the temperature grade and shipping format when ordering, because these attributes are not determined by the MPN prefix alone.
合规信息
The available product summaries do not explicitly establish the requested compliance declarations. Obtain current manufacturer compliance documentation for the exact ordering code before making an environmental or automotive qualification claim.
