STM8L151C8T3 - 16MHz 64KB Flash MCU | STMicroelectronics
MPN： STM8L151C8T3 ✓ 啟用中STM8L151C8T3 概覽
An ultra-low-power microcontroller is a semiconductor designed to minimize energy consumption while executing control logic and managing external peripherals. The STM8L family belongs to the hierarchy of MCU, embedded processor, integrated circuit, and semiconductor. Compared with general-purpose microcontrollers, devices in this category emphasize constrained power budgets, deterministic control, and integration of communication, timing, and analog functions on a single device.
The STM8L151C8T3's principal characteristics include 64 KB of Flash, a 16 MHz clock, 41 available I/O ports, and operation from 1.8 V through 3.6 V. Its 48-LQFP package provides a practical balance between component size and external connectivity, making it suitable for boards that need more pins than a small-outline package can offer. The stated temperature range supports applications in consumer, industrial, instrumentation, and embedded control equipment.
The STM8L core uses a CISC architecture and integrates embedded Flash rather than requiring an external program-memory device. This combination simplifies board layout in cost-sensitive embedded products while preserving sufficient storage for firmware, configuration data, and application parameters. The 1.8 V minimum operating voltage also allows the device to operate from low-energy sensor nodes and modern 3.3 V system rails without requiring a separate level-conversion stage for compatible peripherals.
Typical applications include connected sensor modules, compact industrial controllers, building and access-control equipment, metering systems, consumer accessories, and low-power IoT devices. The 48-pin package is especially useful when a design needs multiple digital inputs and outputs while retaining a relatively small 7 x 7 mm body. Firmware should be configured to use the appropriate clock, low-power modes, and peripheral resources for the selected board.
A key design consideration is ensuring that every supply rail remains within the 1.8 V to 3.6 V operating range, including transients caused by switching loads or attached peripherals. Firmware should also avoid leaving unused I/O pins in an undefined state. For battery-powered products, verify the selected external components and communication interfaces against the system's current budget rather than estimating energy use from the maximum clock rate alone.
This product page consolidates the core MCU specifications, verified sourcing details, engineering guidance, and a same-footprint family comparison. It also explains where the STM8L151C8T3 fits relative to the closely related STM8L152C8T6TR while keeping package, memory, voltage, and temperature requirements central to replacement decisions.
直接替換替代品，適用於 STM8L151C8T3 — 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。
STM8L152C8T6TR
✅ 直接替換📋 參考替代品（不在目錄中）
STM8L151C8T3 最大額定值與電氣特性
| Product Type | 8-bit ultra-low-power microcontroller |
| Series | STM8L EnergyLite |
| Instruction Set Architecture | CISC |
| Maximum Clock Speed | 16 MHz |
| Flash Memory | 64 KB |
| Flash Organization | 64K x 8 bits |
| RAM Memory | 4 KB |
| Supply Voltage Range | 1.8 V to 3.6 V |
| I/O Port Count | 41 ports |
| 封裝 | 48-LQFP, 7 x 7 mm |
| 腳位數 | 48 pins |
| 工作溫度範圍 | -40 °C to +125 °C |
| 安裝類型 | Surface mount |
| Delivery Format | Tray |
| 生命週期狀態 | Active |
STM8L151C8T3 48-lqfp, 7 x 7 mm 腳位配置指南
STM8L151C8T3（48-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： STM8L151C8T3.
請參閱 資料表 以查看完整腳位配置。
典型應用
STM8L151C8T3 適用於 6 應用s: Low-Power IoT Sensor Nodes, Industrial Metering Equipment, Building and Access-Control Panels, Connected Sensor and Gateway Modules, Consumer Accessories and Controls, Instrumentation and Test Equipment.
Low-Power IoT Sensor Nodes
The STM8L151C8T3 fits low-power IoT sensor nodes because its 1.8 V to 3.6 V operating range supports both 1.8 V and 3.3 V system architectures, while 64 KB of Flash provides room for application firmware, radio-control code, and configuration parameters. The 4 KB of RAM supports protocol buffers and sensor processing, and the 41 I/O ports leave room for digital sensors, interrupts, and status indicators. Its 48-LQFP 7 x 7 mm package is larger than the smallest MCU packages but offers useful connectivity without expanding the board area excessively. Designers should configure the STM8L low-power modes, use the RTC and wake-up sources where appropriate, and calculate the complete module energy budget because the MCU is only one part of the sleep current.
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Industrial Metering Equipment
The STM8L151C8T3 is appropriate for industrial metering equipment that must combine measurement control, local display or communication, and long-life operation across a wide temperature range. Its 41 I/O ports can support pulse inputs, tamper detection, alarm outputs, status LEDs, and communication peripherals, while 64 KB of Flash accommodates protocol handlers and calibration tables. The specified -40 °C to +125 °C range supports equipment exposed to industrial ambient conditions. Use the manufacturer pin-description table to assign alternate-function signals and ensure that external sensor, display, and interface levels are compatible with the 1.8 V to 3.6 V supply range.
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Building and Access-Control Panels
The STM8L151C8T3 supports building and access-control panels where multiple inputs and outputs are required within a compact controller. The 48-LQFP package provides 41 I/O ports, enough to connect door sensors, request-to-exit inputs, relay drivers, status lamps, and keypad or communication interfaces without an I/O expander. A 16 MHz CISC core supports responsive event handling, and 64 KB of Flash can hold protocol and configuration logic. The system designer should account for relay or actuator transients, use suitable protection networks, and maintain every connected signal within the microcontroller's 1.8 V to 3.6 V operating limits.
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Connected Sensor and Gateway Modules
The STM8L151C8T3 can act as the low-power control element in a connected sensor or gateway module that must manage several peripheral buses while retaining a small board footprint. Its 64 KB Flash supports embedded communication stacks and local data processing, and its 41 I/O ports allow multiple sensors, indicators, and configuration switches to coexist. The 7 x 7 mm LQFP body simplifies assembly compared with a very large leaded package while retaining enough pins for bus routing. Firmware should initialize unused pins safely, configure clock trees conservatively, and use low-power wake-up mechanisms so communication radios and sensors can remain duty-cycled around periods of MCU sleep.
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Consumer Accessories and Controls
The STM8L151C8T3 is well suited to compact consumer accessories and local control products where a keypad, status LEDs, sensor inputs, and serial communications must be managed economically. Its 8-bit architecture and embedded Flash provide a straightforward implementation platform for user-interface logic, product-state control, and configurable behavior. The 48-LQFP package offers more I/O than an ultra-compact MCU while remaining suitable for automated assembly. Because consumer accessories may run from USB-derived or battery supplies, validate brownout behavior, standby consumption, and shutdown-state leakage across the complete product rather than evaluating only active-mode clock performance.
推薦
Instrumentation and Test Equipment
The STM8L151C8T3 is useful in compact instrumentation and test equipment requiring several control inputs, precise timing, embedded firmware, and operation over an extended temperature range. The 16 MHz clock supports responsive menu handling, measurement sequencing, and communication handling, while 64 KB of Flash and 4 KB of RAM support local data structures and short transfer buffers. The 41 I/O ports can connect displays, front-panel controls, measurement triggers, and status indicators. A disciplined design should separate analog measurement paths from digital control, use the manufacturer's alternate-function mapping when assigning pins, and verify startup, reset, and supply sequencing for every peripheral connected to the controller.
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推薦產品摘要
工程參考資料，適用於 STM8L151C8T3 — 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 | STM8L152C8T6TR |
|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics |
| Package | 48-LQFP (7 x 7 mm) | 48-LQFP - same package |
| Core Architecture | 8-bit CISC | 8-bit STM8L CISC |
| Maximum Clock Speed | 16 MHz | 16 MHz |
| Flash Memory | 64 KB | 64 KB |
| RAM Memory | 4 KB | 4 KB |
| Supply Voltage Range | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Ordering Format | Tray | Tape and reel |
主要差異化特點
- Exact 64 KB Flash configuration in a compact 48-LQFP device (對比STM8L152C8T6TR)
- Low-voltage operation for energy-conscious embedded designs (對比STM8L152C8T6TR)
- Broad I/O complement in a 7 x 7 mm package (對比STM8L152C8T6TR)
設計說明
Keep all supply pins within the STM8L151C8T3's 1.8 V to 3.6 V operating range, including startup and load-transient excursions. Place local bulk and bypass capacitance at the device supply pins, keep return-current paths short, and size external loads so their switching does not pull the rail below the operating limit. For battery-powered products, measure standby and wake-up current with the complete sensor, communication, and protection circuitry attached because board-level leakage can dominate the MCU contribution.
Use the manufacturer pin-description table before assigning the 48 LQFP positions because alternate-function multiplexing can determine which signals are available on each pin. Keep sensitive analog inputs away from switching nodes and high-current return paths, provide a common ground reference according to the complete signal chain, and route programming or debug access with consideration for signal integrity and assembly access. A 7 x 7 mm package supports compact routing, but careful escape planning is still needed when several buses and power domains converge.
Do not assume that 41 I/O ports means all 48 physical pins are user-controlled; power, ground, reset, clock, programming, and alternate-function positions must be assigned from the datasheet. Avoid enabling peripherals, clocks, or outputs before their pins are configured, because floating inputs and transient states can cause unexpected current or board behavior. Validate the reset strategy and external component connections early in schematic review to prevent a late footprint or firmware change.
合規資訊
The component is identified as Active and specified for -40 °C to +125 °C operation. RoHS, REACH, AEC-Q100, lead-free, halogen-free, and conflict-minerals declarations require confirmation from the manufacturer product documentation or declaration.