STM8L151K4T3 - 16MHz 16KB Ultra-Low-Power 8-Bit MCU | ST
部品番号: STM8L151K4T3 ✓ 生産中STM8L151K4T3 概要
A microcontroller is a programmable semiconductor that integrates a CPU, Flash program memory, data memory, timers, communication interfaces, and GPIO into one device. The STM8L family is designed for embedded systems where energy efficiency, deterministic peripheral access, and low standby current are more important than the processing power associated with 32-bit microcontrollers. The STM8L151K4T3 is therefore a microcontroller rather than a general-purpose processor.
The device provides 16 KB of Flash memory, up to 16 MHz clocking, and 1 KB of data EEPROM according to the STM8L151 datasheet. Its peripheral set includes real-time clock, timer, LCD, and low-power functions. These characteristics support compact battery-operated products, industrial controllers, measurement equipment, and user-interface systems in which one MCU must combine control logic, display handling, and periodic sensing.
The STM8 architecture provides an 8-bit execution model and a compact peripheral set intended for low-cost, low-power control. Ultra-low-power modes allow the MCU to spend substantial operating time in reduced-energy states between sensor readings or user interactions. Design decisions should account for the relationship between active-mode clocking, peripheral activity, and the selected regulator configuration rather than treating the 16 MHz maximum frequency as a continuous-power figure.
Typical uses include low-energy sensor nodes, battery-powered meters, industrial control panels, programmable timers, LCD-driven instruments, and compact consumer appliances. In an LCD instrument, the integrated display-related resources can reduce the need for external display-control circuitry. In a battery-powered sensor, low-power operating modes can extend service intervals by reducing the amount of time the processor and peripherals remain active.
When designing the PCB, provide the supply and decoupling connections specified in the STMicroelectronics application guidance, keep high-current and sensitive signal paths separated, and verify external component ratings against the selected I/O and supply conditions. Firmware should also use the low-power routines and peripheral configuration sequence described in the device reference documentation rather than assuming a generic 8-bit MCU startup model.
This product page organizes the STM8L151K4T3 specifications, qualified same-package alternatives, application guidance, and design notes into a concise engineering reference. It supports initial device selection while directing detailed electrical-limit, pin, and firmware decisions to the manufacturer documentation.
ドロップイン代替品: STM8L151K4T3 — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: STM8L151K4T3 （同一形状・フットプリント） — 相違点: Package, Flash Memory, ADC, Architecture, Comparators.
STM8L151K4T6
✅ ドロップイン価格はお問い合わせください
データシートを見る →STM8L152K4T3
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
STM8L152K4T6
✅ ドロップイン価格はお問い合わせください
データシートを見る →STM8L151K6T3
✅ ドロップイン ⚠️ 仕様未検証価格はお問い合わせください
データシートを見る →STM8L152K6T3
✅ ドロップイン ⚠️ 仕様未検証価格はお問い合わせください
データシートを見る →STM8L151K4T3 最大定格＆電気的特性
| Device Type | 8-bit ultra-low-power microcontroller |
| Series | STM8L EnergyLite |
| 最大クロック周波数 | 16 MHz |
| Flash Memory | 16 KB |
| Flash Organization | 16K x 8 bits |
| Data EEPROM | 1 KB |
| Core Architecture | 8-bit |
| Product Density | Medium density |
| パッケージ | 32-LQFP (7 x 7 mm) |
| ピン数 | 32 pins |
| 実装タイプ | Surface mount |
| Temperature Grade | Automotive |
| Integrated Functions | RTC, LCD, and timers |
| ADC Resolution | 12-bit |
| RoHS Compliance | unknown |
| REACH Compliance | unknown |
| AEC-Q100 Qualification | unknown |
STM8L151K4T3 32-lqfp (7 x 7 mm) ピン配置ガイド
STM8L151K4T3 (32-lqfp (7 x 7 mm) パッケージ) のピン配置。 このデジタルICには、GPIO、通信インターフェース (UART、SPI、I2C)、および電源ピンが含まれています。代替ピン機能と設定オプションについては、メーカーのデータシートを参照してください。組み込みシステム設計とPCBレイアウトに不可欠です。
詳細なピン配置データはありません: STM8L151K4T3.
詳細は データシート をご参照ください。
主な用途
STM8L151K4T3 の用途: 6 件s: Battery-Powered Sensor Nodes, LCD-Operated Measurement Instruments, Industrial Control Panels, Programmable Timers and Counters, Low-Power Data Acquisition, Compact Consumer Appliances.
Battery-Powered Sensor Nodes
The STM8L151K4T3 fits battery-powered sensor nodes because its 16 MHz clock provides useful processing speed while the STM8L architecture supports ultra-low-power operating modes. Its 16 KB Flash can hold acquisition logic, calibration tables, and communication routines for compact sensing platforms. The 1 KB EEPROM supports nonvolatile configuration storage without consuming Flash program space. Design the duty cycle around periodic wake, measurement, and transmit phases, and disable unused peripherals to reduce energy consumption between samples.
おすすめ
LCD-Operated Measurement Instruments
The STM8L151K4T3 is appropriate for compact LCD measurement instruments that combine numeric display control with sensor acquisition and timing. Its STM8L family includes LCD, timer, and real-time-clock functions, reducing the external circuitry needed for a display-oriented product. The 16 MHz clock supports responsive display and control updates, while 16 KB Flash accommodates interface, measurement, and logging code. Engineers should confirm the selected LCD segment and common-drive requirements against the exact pin configuration before laying out the board.
おすすめ
Industrial Control Panels
The STM8L151K4T3 can serve as the local controller in an industrial panel that coordinates inputs, timers, status indicators, and low-speed serial communications. Its 8-bit architecture and 16 MHz clock are suitable for deterministic supervisory control rather than demanding graph processing. The 32-LQFP 7 x 7 mm package preserves board area in compact equipment. For installations with extended ambient conditions, select the STM8L151K4T6 after confirming the complete operating-temperature and electrical limits.
おすすめ
Programmable Timers and Counters
The STM8L151K4T3 is suited to programmable timers, event counters, and periodic actuator controllers because the device includes timer and real-time-clock functions within a low-power MCU. The 16 MHz clock supports deterministic handling of timing tasks, and the 16 KB Flash capacity is sufficient for compact schedules and operating modes. Use hardware timers for repetitive events where possible, then place the MCU into a low-power state between updates to avoid wasting energy on software polling.
おすすめ
Low-Power Data Acquisition
The STM8L151K4T3 works well in low-power data-acquisition systems that sample analog or digital inputs and perform local calculations before sending summarized results. Its 16 MHz processing clock handles sampling control and data conditioning, while 1 KB EEPROM can retain calibration or configuration information. The STM8L low-power design is particularly helpful when the acquisition duty cycle is low. Validate the ADC, sampling requirements, and interrupt behavior against the manufacturer's electrical characteristics before assigning acquisition channels.
おすすめ
Compact Consumer Appliances
The STM8L151K4T3 can coordinate user interfaces, timers, and small actuators in compact consumer appliances where an 8-bit MCU is sufficient. Its 16 KB Flash supports a focused control application, and the ultra-low-power family architecture helps separate prolonged idle periods from short active control sequences. The 32-LQFP package allows a relatively compact implementation compared with larger leaded packages. Firmware should define safe actuator states during reset, brownout, and watchdog recovery to avoid unintended operation.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: STM8L151K4T3 — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | STM8L151K4T6 | STM8L152K4T3 | STM8L152K4T6 | STM8L151K6T3 |
|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 32-LQFP (7 x 7 mm) | 32-LQFP (7 x 7 mm) | 32-LQFP (7 x 7 mm) | 32-LQFP (7 x 7 mm) | 32-LQFP (7 x 7 mm) |
| Maximum Clock Frequency | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 16 MHz |
| Flash Memory | 16 KB | 16 KB | 16 KB | 16 KB | 32 KB |
| Core Architecture | 8-bit | 8-bit | 8-bit | 8-bit | 8-bit |
| Product Density | Medium density | Medium density | Medium density | Medium density | Medium density |
| Temperature Grade | Standard T3 grade | Extended T6 grade | Standard T3 grade | Extended T6 grade | Standard T3 grade |
| Integrated Functions | RTC, LCD, and timers | RTC, LCD, and timers | RTC, LCD, and timers | RTC, LCD, and timers | RTC, LCD, and timers |
主な差別化要因
- Combines a 16 MHz 8-bit core with a 16 KB Flash configuration （vs STM8L151K6T3)
- Standard temperature-grade ordering option （vs STM8L151K4T6)
- Uses the STM8L151 family rather than the STM8L152 peripheral configuration （vs STM8L152K4T3)
設計ノート
Design the power path around the STM8L low-power architecture rather than assuming continuous 16 MHz operation. Place the required supply-bypass capacitors close to the device, use the regulator and decoupling arrangement specified in the manufacturer application guidance, and route return current through the ground network without long loops. Disable unused peripherals during idle periods and use the documented low-power modes to reduce current consumption in battery-powered products.
Assign every board net from the 32-LQFP pin-description table in the manufacturer datasheet. Keep oscillator, reset, and sensitive input routes short, and place associated passive components where their shortest electrical path can be maintained. The 7 x 7 mm LQFP footprint still requires careful fanout and solder-paste design, so inspect the recommended land pattern and assembly process before releasing the PCB artwork.
Do not treat a same-package alternative as firmware-identical without review. The STM8L151 and STM8L152 families retain a related low-power architecture, but peripheral availability, interrupt behavior, LCD operation, and firmware configuration must be checked. K6 alternatives provide 32 KB Flash rather than the target's 16 KB, while T6 variants change the temperature class. Verify the ordering code, pin functions, memory assumptions, and worst-case operating conditions before substitution.
Use the manufacturer's power-consumption and maximum-junction-temperature limits to evaluate the LQFP thermal design. Most STM8L151K4T3 operating currents are likely to be modest, but final dissipation depends on clock rate, active time, I/O loading, supply voltage, and ambient conditions. Provide sensible copper area around the device, avoid placing heat sources against the package, and perform the thermal assessment across the highest expected load and temperature.
コンプライアンス情報
The manufacturer listing identifies an automotive temperature grade, but it does not explicitly establish AEC-Q100 qualification or the other compliance fields. Confirm these attributes with STMicroelectronics before qualification.