STM8L151G3U6 - 16MHz 8KB Ultra-Low-Power MCU | STMicroelectronics
MPN： STM8L151G3U6 ✓ 啟用中STM8L151G3U6 概覽
An ultra-low-power microcontroller is a semiconductor controller designed to minimize energy consumption while monitoring sensors, controlling actuators, and managing communication or timing functions. The STM8L family belongs to the 8-bit microcontroller hierarchy, where an embedded MCU integrates processor core, memory, GPIO, timers, and communication peripherals on one package. This integration reduces component count and supports portable, low-power industrial, sensor, consumer, and medical-control designs.
Key verified features include 8 KB of Flash organized as 8K x 8, 16 MHz maximum clocking, 8-bit processing, a 1.8 V to 3.6 V supply range, and 28-pin UFQFPN packaging. The manufacturer describes the STM8L151x2/3 devices as offering increased processing power while maintaining an ultra-low-power architecture. The small 4x4 mm package supports space-constrained designs, while the exposed-pad construction requires careful PCB thermal and layout implementation.
The STM8L151G3U6 is primarily controlled by its enhanced 8-bit STM8 core. Its memory arrangement provides a practical balance between firmware storage and working RAM for compact control tasks. The 16 MHz operating frequency supports responsive firmware execution, while the low-voltage operating range allows operation from common low-energy supply rails when the system power architecture supports them.
Typical applications include battery-powered sensor nodes, compact industrial controllers, low-power IoT equipment, building automation modules, portable measurement products, and small consumer-device controllers. The device is particularly appropriate when board area, standby energy use, and a simple 8-bit control platform matter more than high arithmetic throughput.
Designers should place decoupling capacitors close to the supply pins, follow the manufacturer’s exposed-pad land-pattern requirements, and verify signal-level compatibility with connected peripherals. Do not infer pin functions from the package count alone; use the official STM8L151G3 documentation for the complete pinout and exposed-pad connection.
This page combines verified distributor and manufacturer information, same-family drop-in alternatives, comparison data, and practical design guidance for engineers evaluating STM8L151G3U6 sourcing and board compatibility.
直接替換替代品，適用於 STM8L151G3U6 — 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： STM8L151G3U6 （相同外形與佔位） — 差異在於 Flash Memory, Package, Communication Interfaces, Core, Product Family.
STM8L101G3U6
✅ 直接替換📋 參考替代品（不在目錄中）
STM8L151G4U6
✅ 直接替換聯絡詢價
查看資料表 →STM8L151K3U6
✅ 直接替換📋 參考替代品（不在目錄中）
STM8L151G6U6
✅ 直接替換聯絡詢價
查看資料表 →STM8L152G3U6
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
STM8L151G3U6 最大額定值與電氣特性
| Product Type | 8-bit ultra-low-power microcontroller |
| CPU Maximum Frequency | 16 MHz |
| Maximum CPU Throughput | 16 MIPS at 16 MHz |
| Flash Memory | 8 KB (8K x 8) |
| RAM | 1 KB |
| Supply Voltage Range | 1.8 V to 3.6 V |
| 封裝 | 28-pin UFQFPN, 4x4 mm |
| GPIO Count | 41 I/O ports |
| Architecture | 8-bit STM8 CISC |
| Product Family | STM8L EnergyLite |
| 安裝類型 | Surface Mount |
| Core | Enhanced STM8 core |
| Nominal Supply | 2.5 V / 3.3 V |
| LCSC Price | From $1.7383 |
| LCSC Stock | In stock |
| DigiKey Availability | Buy now, ships today |
| Lifecycle Stage | Active |
STM8L151G3U6 28-pin ufqfpn, 4x4 mm 腳位配置指南
STM8L151G3U6（28-pin ufqfpn, 4x4 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： STM8L151G3U6.
請參閱 資料表 以查看完整腳位配置。
典型應用
STM8L151G3U6 適用於 6 應用s: Battery-Powered Sensor Nodes, Industrial Control and Automation, Smart Home Sensor Hubs, Battery-Powered Measurement Instruments, Portable Consumer Accessories, Low-Power Building Automation.
Battery-Powered Sensor Nodes
The STM8L151G3U6 fits compact, duty-cycled sensor nodes because its ultra-low-power STM8L architecture operates from 1.8 V to 3.6 V and provides 16 MHz processing for sensor conditioning and control logic. The 8 KB Flash stores a small application and 1 KB RAM supports lightweight acquisition and state management. In a periodic measurement design, the MCU wakes to read a sensor, evaluates thresholds, updates an indicator, and returns to a low-power mode. The exact battery life depends on sensor current, regulator losses, wake-up interval, and measured MCU consumption, so those values must be characterized in the final board.
推薦
Industrial Control and Automation
STM8L151G3U6 is suitable for small industrial control modules where an 8-bit MCU, 41 listed I/O ports, and a 1.8 V to 3.6 V supply range provide a compact control platform. Its 16 MHz CPU can manage digital inputs, actuator outputs, status indicators, and simple local protocols without a larger processor. The 28-pin UFQFPN 4x4 mm package helps reduce board area, but exposed-pad layout and industrial temperature requirements must be checked against the official datasheet. Firmware should include debounce, watchdog, fault handling, and safe-state behavior for connected equipment.
推薦
Smart Home Sensor Hubs
The STM8L151G3U6 can act as a low-power sensor hub for a connected home device because its 41 listed I/O ports provide flexibility for digital sensors and control lines. A practical design can use the MCU to sample environmental or contact inputs, debounce switches, drive status LEDs, and coordinate a low-rate serial link. The 16 MHz clock and 8 KB Flash support compact firmware, while the 4x4 mm package helps fit behind a sensor or display enclosure. Wireless operation remains external to this MCU, so radio current, sleep intervals, antenna layout, and supply regulation must be budgeted separately.
推薦
Battery-Powered Measurement Instruments
STM8L151G3U6 is appropriate for portable measurement instruments that need local control, status reporting, and low-voltage operation rather than high computation. Its 16 MHz 8-bit core can perform timing, counting, calibration bookkeeping, threshold decisions, and control of analog front ends or displays. The 8 KB Flash and 1 KB RAM provide a small firmware platform, while the 28-pin package reduces board area. For accurate analog measurements, use external sensors or converters with suitable resolution and reference accuracy; the MCU should not be treated as a precision analog measurement engine without a documented ADC and analog-performance specification.
推薦
Portable Consumer Accessories
The STM8L151G3U6 can support compact consumer accessories that perform button handling, LED indication, simple timing, and low-power state management. Its 1.8 V to 3.6 V operating range allows integration with compatible low-energy rails, while the 4x4 mm UFQFPN package supports dense layouts. A typical accessory may use GPIO for buttons, an I2C or SPI peripheral for an external sensor, and a regulator for battery management. Designers should check whether 8 KB Flash and 1 KB RAM are sufficient for the selected user interface and should add low-value replacement protection if the product exposes service interfaces.
推薦
Low-Power Building Automation
STM8L151G3U6 is a reasonable fit for distributed building-automation endpoints such as room controllers, occupancy interfaces, and small actuator nodes. The MCU can consolidate digital inputs, control relays or indicators, and communicate with a higher-level controller through a companion transceiver. Its low-power family positioning helps when endpoints are battery powered or idle for long periods, while the 16 MHz CPU supports deterministic peripheral handling. The design must verify the exact GPIO count available on the package, relay-driver isolation, inductive-load protection, and the environmental requirements of the installation environment.
推薦
推薦產品摘要
工程參考資料，適用於 STM8L151G3U6 — 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 | STM8L101G3U6 | STM8L151G4U6 | STM8L151K3U6 |
|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 28-pin UFQFPN, 4x4 mm | 28-pin UFQFPN, 4x4 mm | 28-pin UFQFPN, 4x4 mm | 28-pin UFQFPN, 4x4 mm |
主要差異化特點
- Ultra-low-power STM8L architecture (對比STM8L101G3U6)
- Compact 28-pin UFQFPN 4x4 mm package (對比STM8L151G4U6)
- Documented sourcing signals (對比STM8L101G3U6)
- 16 MHz processing with 8 KB Flash and 1 KB RAM (對比STM8L151K3U6)
設計說明
Use the official STM8L151G3 package drawing as the authority for the 28-pin UFQFPN 4x4 mm land pattern. Place input and output decoupling capacitors close to the relevant supply pins, route short and symmetrically where possible, and provide adequate clearance around the exposed pad. Confirm whether the exposed pad is electrically connected to a supply, ground, or another specified board node before finalizing copper and solder mask.
The verified supply range is 1.8 V to 3.6 V, but the allowable current, regulator topology, and power-mode behavior must be taken from the manufacturer datasheet. For battery-powered products, estimate average current from active and sleep durations and include regulator quiescent current. Estimated: average supply current equals active current multiplied by active duty cycle plus sleep current multiplied by sleep duty cycle; validate the result with a current profiler in the assembled design.
Do not treat the 41 listed I/O ports as 41 freely assignable pins. GPIO availability depends on package pins, power pins, alternate functions, and reset or debug functions. Likewise, a related STM8L MPN is not automatically a drop-in replacement: verify pin numbering, package dimensions, exposed-pad connection, memory, voltage limits, peripheral multiplexing, and firmware support against the exact manufacturer datasheets.
Keep sensitive timing and communication traces short, preserve continuous ground return paths, and separate switching-regulator or high-current paths from low-level sensor and measurement signals. The STM8L151G3U6 is a digital MCU, so the major PCB risks are supply bounce, clock or signal integrity, and exposed-pad thermal performance rather than SOA analysis. Verify all pin multiplexing decisions in the official pinout and alternate-function tables.
合規資訊
The supplied verified data identifies the manufacturer, product family, package, electrical basics, active lifecycle status, distributor availability, and pricing, but it does not provide RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations.
