STM8L051F3P6 - 16MHz 8-Bit Ultra-Low-Power MCU | STMicroelectronics
MPN： STM8L051F3P6 ✓ 啟用中STM8L051F3P6 概覽
What is an ultra-low-power microcontroller? An ultra-low-power MCU is a semiconductor controller designed to execute firmware while minimizing energy consumption during both active and sleep operation. STM8L belongs to a broader low-power MCU hierarchy that includes embedded processors, real-time controllers, and power-managed embedded systems. This makes the STM8L051F3P6 suitable for designs where battery life, standby consumption, and compact PCB area are more important than high processing throughput.
Key features include 16 MHz operation, 8 KB of Flash memory organized as 8K x 8, 1 KB of RAM, 256 bytes of EEPROM, five low-power modes, and a 1.8 V to 3.6 V operating supply range. The integrated communication peripherals provide practical connectivity for embedded products without requiring separate interface devices. The 10-channel, 12-bit ADC also enables analog measurement in sensor and control systems.
The STM8L architecture uses an enhanced 8-bit CPU core and belongs to STMicroelectronics’ STM8L value line. Its combination of modest memory capacity, low-voltage operation, and integrated peripherals makes it a practical fit for compact control nodes, low-cost sensing products, and simple connected equipment. Applications can use the USART, I2C, or SPI interface to connect sensors, displays, transceivers, or storage devices.
Typical applications include low-power sensor nodes, compact environmental monitors, battery-powered accessories, simple motor-control boards, small consumer appliances, and low-cost industrial sensing modules. The 20-TSSOP package supports conventional surface-mount assembly, while the 16 MHz clock provides sufficient performance for peripheral control, state-machine logic, and moderate data acquisition.
Designers should verify the complete pinout, electrical limits, clock configuration, and low-power current values against the STM8L051F3 datasheet before layout release. Decoupling, oscillator layout, ADC input conditioning, and firmware wake-up behavior are especially important when minimizing energy use. The verified distributor data identifies the lifecycle stage as active, so new designs can target this part with current sourcing information.
This product summary combines verified manufacturer and distributor information with practical selection guidance for engineers evaluating the STM8L051F3P6 in compact, low-power embedded designs.
直接替換替代品，適用於 STM8L051F3P6 — 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： STM8L051F3P6 （相同外形與佔位） — 差異在於 Package, ADC Resolution, Core, Communication Interfaces, RAM Size.
STM8L101F3P6TR
✅ 直接替換📋 參考替代品（不在目錄中）
STM8L051F3P6 最大額定值與電氣特性
| Product Type | 8-bit ultra-low-power microcontroller |
| CPU Maximum Frequency | 16 MHz |
| Flash Memory | 8 KB (8K x 8) |
| RAM | 1 KB (1K x 8) |
| Data EEPROM | 256 bytes |
| 工作電源電壓 | 1.8 V to 3.6 V |
| ADC Resolution | 12-bit |
| ADC Channel Count | 10 channels |
| Low-Power Modes | 5 modes |
| Serial Interfaces | USART, I2C, SPI |
| Real-Time Clock | Yes |
| Timers | Yes |
| 封裝 | 20-pin TSSOP |
| 安裝類型 | Surface Mount |
| 工作溫度 | -40 °C to +85 °C |
| Lifecycle Stage | Active |
| Product Family | STM8L value line |
| Core Architecture | Enhanced 8-bit CPU core |
| Manufacturer Product Status | Active |
STM8L051F3P6 20-pin tssop 腳位配置指南
STM8L051F3P6（20-pin tssop 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： STM8L051F3P6.
請參閱 資料表 以查看完整腳位配置。
典型應用
STM8L051F3P6 適用於 6 應用s: Battery-Powered Sensor Nodes, Environmental Monitoring, Compact Industrial Control, Battery-Powered Consumer Accessories, Simple Motor and Relay Control, Low-Cost Connected Modules.
Battery-Powered Sensor Nodes
The STM8L051F3P6 fits battery-powered sensor nodes because its verified 1.8 V to 3.6 V supply range and five low-power modes support energy-conscious designs. The 8 KB Flash and 1 KB RAM are sufficient for compact acquisition, filtering, and state-machine firmware, while the 10-channel 12-bit ADC can read analog sensor outputs. USART, I2C, or SPI can connect a sensor or radio without requiring a separate protocol controller. Validate battery life using measured active and sleep currents under the final firmware profile.
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Environmental Monitoring
For environmental monitoring, the STM8L051F3P6 provides an ADC, integrated serial interfaces, and an enhanced 8-bit CPU core for periodic measurement and control. A 10-channel 12-bit ADC can sample temperature, humidity, light, or gas-sensor analog outputs, while I2C can connect digital sensors and SPI can support suitable external devices. Its 8 KB Flash and 1 KB RAM support compact acquisition and threshold logic. The design should place ADC inputs away from switching nodes and validate calibration over the required temperature range.
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Compact Industrial Control
The STM8L051F3P6 is suitable for compact industrial control modules that need local sensing, serial communication, and low standby consumption without a high-performance processor. Its 16 MHz maximum frequency supports peripheral control and moderate logic tasks, while USART, I2C, and SPI provide flexible connection options for sensors, displays, or remote modules. The 20-pin TSSOP package supports surface-mount assembly. Industrial designs should verify operating-temperature limits, ESD requirements, isolation strategy, and watchdog behavior against the complete manufacturer documentation.
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Battery-Powered Consumer Accessories
The STM8L051F3P6 can serve as the control MCU in low-cost accessories where a full-size processor is unnecessary but multiple low-power peripherals are useful. Its 8 KB Flash supports compact product firmware, 1 KB RAM supports state handling, and the integrated ADC supports analog sensing or touch-oriented control designs. USART, I2C, and SPI allow connection to displays, indicators, wireless modules, or sensors. Product-level battery-life claims should be based on measured sleep duration and active-current measurements, not only the nominal 16 MHz clock.
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Simple Motor and Relay Control
The STM8L051F3P6 is appropriate for simple motor or relay-control front ends when the control task is primarily sequencing and monitoring. Timers and GPIO resources can support timing and switching functions, while the ADC can monitor current, temperature, or position-sensor signals when the application requires feedback. The MCU’s low-power architecture can reduce standby consumption between operations. Keep inductive switching nodes separated from ADC and communication traces, include appropriate driver protection, and verify that the selected timer outputs meet the required load timing.
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Low-Cost Connected Modules
The STM8L051F3P6 can act as the low-power control companion in a connected sensor or actuator module. I2C and SPI support short-distance peripheral connections, while USART provides a simple interface to a wireless or communications module. The MCU’s 1.8 V to 3.6 V operating range can fit many low-voltage embedded rails, and its five low-power modes help manage duty-cycled operation. Firmware should disable unused peripherals and configure pins for low leakage during sleep. The exact communication levels and timing must be checked against the selected companion device.
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推薦產品摘要
工程參考資料，適用於 STM8L051F3P6 — 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 | STM8L101F3P6TR |
|---|---|---|
| Product Type | 8-bit ultra-low-power MCU | 8-bit MCU |
| Brand | STMicroelectronics | STMicroelectronics |
| Package | 20-pin TSSOP | 20-pin TSSOP |
主要差異化特點
- Value-line low-power positioning (對比STM8L101F3P6TR)
- Integrated mixed-signal and communication resources (對比STM8L101F3P6TR)
- Documented active sourcing status (對比STM8L101F3P6TR)
設計說明
Use a dedicated local supply path for the STM8L051F3P6 and place the manufacturer-recommended bypass capacitor close to the supply pins. Because the supplied data confirms a 1.8 V to 3.6 V operating range but does not specify exact active or sleep current, calculate battery life from measured current at the intended voltage and duty cycle. Verify brownout, startup, and sleep behavior in hardware before finalizing the power budget.
Route analog inputs away from switching nodes and high-current return paths. The integrated 10-channel 12-bit ADC is useful for compact sensing designs, but PCB leakage, source impedance, and sampling timing can affect measurement accuracy. Provide short analog traces, a stable reference arrangement, and controlled grounding. Confirm the exact ADC input mapping and recommended acquisition network from the STM8L051F3 datasheet.
Do not treat the STM8L101F3P6TR as a confirmed drop-in replacement without comparing pin mappings, voltage limits, memory, peripheral assignments, and clock behavior. The supplied search results establish a related 20-pin TSSOP device, but they do not provide complete equivalence data. Also verify the exact meaning of package ordering suffixes and reel configuration before approving a second source.
合規資訊
The supplied verified data does not explicitly provide RoHS, REACH, lead-free, halogen-free, conflict-minerals, or automotive qualification information for STM8L051F3P6.