STM8L151K4T3 - 16MHz 16KB Ultra-Low-Power 8-Bit MCU | ST
MPN： STM8L151K4T3 ✓ 啟用中STM8L151K4T3 概覽
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.
直接替換替代品，適用於 STM8L151K4T3 — 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： STM8L151K4T3 （相同外形與佔位） — 差異在於 Package, Flash Memory, ADC, Architecture, Comparators.
STM8L151K4T6
✅ 直接替換聯絡詢價
查看資料表 →STM8L152K4T3
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
STM8L152K4T6
✅ 直接替換聯絡詢價
查看資料表 →STM8L151K6T3
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →STM8L152K6T3
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →STM8L151K4T3 最大額定值與電氣特性
| Device Type | 8-bit ultra-low-power microcontroller |
| Series | STM8L EnergyLite |
| 最大時脈頻率 | 16 MHz |
| Flash Memory | 16 KB |
| Flash Organization | 16K x 8 bits |
| Data EEPROM | 1 KB |
| Core Architecture | 8-bit |
| Product Density | Medium density |
| 封裝 | 32-LQFP (7 x 7 mm) |
| 腳位數 | 32 pins |
| 安裝類型 | 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) 腳位配置指南
STM8L151K4T3（32-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： STM8L151K4T3.
請參閱 資料表 以查看完整腳位配置。
典型應用
STM8L151K4T3 適用於 6 應用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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
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.
推薦
推薦產品摘要
工程參考資料，適用於 STM8L151K4T3 — 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 | 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 |
主要差異化特點
- Combines a 16 MHz 8-bit core with a 16 KB Flash configuration (對比STM8L151K6T3)
- Standard temperature-grade ordering option (對比STM8L151K4T6)
- Uses the STM8L151 family rather than the STM8L152 peripheral configuration (對比STM8L152K4T3)
設計說明
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.
合規資訊
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.