STM8L151C6U6 - 16MHz 32KB Low-Power MCU | ST
N.º da peça: STM8L151C6U6 ✓ AtivoSTM8L151C6U6 Visão geral
An ultra-low-power microcontroller is an embedded controller optimized to minimize energy consumption while retaining the processing, sensing, communication, and timing resources required by a battery-operated product. The STM8L series combines an 8-bit architecture with low-power operating modes, making it suitable for applications that spend substantial time in sleep or standby rather than continuously calculating. In the system hierarchy, this device belongs to the MCU and embedded-controller class within semiconductor components.
The STM8L151C6U6 provides 32 KB of programmable Flash for firmware, 1 KB of nonvolatile data EEPROM for configuration or retained records, and 41 I/O ports. Its maximum clock frequency of 16 MHz is suitable for control loops, keypad and display handling, sensor sampling, and low-speed communication tasks. The 1.8 V to 3.6 V supply range permits use with common low-energy rails, while the 48-pin package exposes substantially more I/O than smaller STM8L variants.
The STM8L151x4 and STM8L151x6 devices use a modular peripheral arrangement, allowing designers to reuse development tools and familiar software practices across related STM8L families. Integrated timing, LCD, RTC, and EEPROM resources reduce external component count in compact instruments. The 8-bit architecture simplifies control-oriented firmware while supporting the event timing and state management needed for energy-conscious embedded products.
Typical uses include low-energy sensor nodes, industrial monitoring modules, compact metering instruments, LCD-based control panels, wearable accessories, building-automation endpoints, and battery-powered handheld equipment. A design can allocate Flash to application code, use EEPROM for persistent settings, and leverage the RTC and timers for periodic measurement or display updates. The 41 I/O ports also allow direct connection of sensors, buttons, indicators, and display-control signals.
Design the PCB with short, stable supply and ground paths, and place decoupling capacitance close to the appropriate power pins. Confirm every signal assignment against the manufacturer pin description before routing the dense 7 x 7 mm footprint. Account for the MCU's low-power states, wake sources, clock configuration, and startup behavior during firmware development rather than treating it as a conventional always-on controller.
This product overview consolidates the core STM8L151C6U6 specifications, verified lifecycle information, application guidance, and same-family replacement context. The accompanying comparison and design notes help engineers assess footprint compatibility, memory requirements, low-power behavior, and application fit before beginning a board-level design.
Alternativas drop-in para STM8L151C6U6 — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Variantes desta série
Modelos da mesma série compatíveis como drop-in com STM8L151C6U6 (mesmo formato e footprint) — diferindo em Package, Timers, Product Type, ADC, Real-Time Clock.
STM8L152C6U6
✅ Drop-InConsulte o preço
Ver ficha técnica →STM8L151C6U3
✅ Drop-InConsulte o preço
Ver ficha técnica →STM8L151C6U6 Classificações máximas e características elétricas
| Product Type | Ultra-low-power 8-bit microcontroller |
| Manufacturer | STMicroelectronics |
| Product Family | STM8L EnergyLite |
| Frequência máxima de clock | 16 MHz |
| Flash Memory | 32 KB |
| Data EEPROM | 1 KB |
| Supply Voltage Range | 1.8 V to 3.6 V |
| I/O Port Count | 41 ports |
| Total Pin Count | 48 pins |
| Encapsulamento | UFQFPN, 7 x 7 mm |
| Tipo de montagem | Surface mount |
| Integrated LCD Controller | Yes |
| Real-Time Clock | Yes |
| Timers | Yes |
| Status do ciclo de vida | Active |
Guia de Configuração de Pinos do STM8L151C6U6 ufqfpn, 7 x 7 mm
Configuração de pinos para STM8L151C6U6 (pacote ufqfpn, 7 x 7 mm). Este CI digital inclui GPIO, interfaces de comunicação (UART, SPI, I2C) e pinos de alimentação. Consulte o datasheet do fabricante para funções alternativas dos pinos e opções de configuração. Essencial para projeto de sistemas embarcados e layout de PCB.
Nenhum dado detalhado de pinagem disponível para STM8L151C6U6.
Consulte a ficha técnica para a configuração completa dos pinos.
Aplicações típicas
STM8L151C6U6 é adequado para 6 aplicaçãos: Battery-Powered Environmental Sensor Nodes, Compact LCD Metering Instruments, Industrial Monitoring and Control Modules, Smart Building and Automation Endpoints, Low-Power Wearable Accessories, Battery-Powered Test and Measurement Products.
Battery-Powered Environmental Sensor Nodes
The STM8L151C6U6 fits low-energy environmental sensors that periodically measure temperature, humidity, light, or air quality and then return to a low-power state. Its 1.8 V to 3.6 V operating range supports compact battery rails, while the 16 MHz maximum clock provides ample control performance for sampling, filtering, and data preparation. The 32 KB Flash accommodates firmware and calibration tables, and the 1 KB EEPROM can retain configuration values or counters between wake cycles. The RTC and timers help schedule measurements, while the low-power STM8L architecture supports the duty-cycled behavior required by battery-operated deployments.
Compact LCD Metering Instruments
The STM8L151C6U6 is well suited to handheld metering instruments with segment or small matrix LCD displays. Its integrated LCD controller removes the need for a separate display controller, and the 41 I/O ports provide connections for buttons, status indicators, sensor inputs, and communications. A 16 MHz clock supports responsive display updates and measurement logic, while 32 KB of Flash provides room for application firmware. Running from 1.8 V to 3.6 V also assists in low-power portable designs. The exact LCD glass should be checked against the controller's segment and drive requirements before schematic capture.
Industrial Monitoring and Control Modules
The STM8L151C6U6 can serve as the local controller in an industrial sensor or condition-monitoring module. Its 8-bit architecture is appropriate for deterministic tasks such as reading sensors, applying thresholds, driving indicators, and maintaining operating state. The 48-pin UFQFPN package exposes 41 I/O ports, reducing the need for external I/O expanders in designs with multiple discrete inputs and outputs. Its 1.8 V to 3.6 V range integrates with low-voltage signal-conditioning circuitry. For deployed equipment, verify the exact operating-temperature grade and EMC requirements before approving the device for the target environment.
Smart Building and Automation Endpoints
The STM8L151C6U6 can implement a low-power building-automation endpoint that senses occupancy, temperature, or contact status and communicates periodically through a system peripheral. Its timers support periodic sampling, the RTC provides timekeeping for scheduled events, and 1 KB of EEPROM preserves configuration or event counters across power cycles. The 32 KB Flash memory is suitable for protocol handling and application logic, while the 41 available I/O ports accommodate inputs, indicators, and local actuators. The STM8L family's low-power emphasis is valuable in battery-operated rooms where replacing batteries would otherwise be difficult.
Low-Power Wearable Accessories
The STM8L151C6U6 can support a small wearable accessory that gathers user input or motion-related state and operates for long periods between charging cycles. Its compact 7 x 7 mm UFQFPN package, 1.8 V to 3.6 V supply range, and STM8L ultra-low-power positioning are useful for space- and energy-constrained products. The 16 MHz clock can handle control logic and communication buffering, while 32 KB of Flash and 1 KB of EEPROM divide persistent data from firmware. The RTC and timers are useful for user-interface timing and scheduled sensor reads. Battery-current measurements should be compared across all firmware sleep modes before finalizing the power budget.
Battery-Powered Test and Measurement Products
The STM8L151C6U6 is suitable for a portable test instrument that acquires a sensor reading, displays a result, stores a calibration value, and then powers down between measurements. The 16 MHz 8-bit processor handles control sequencing and data acquisition, while the LCD controller and timers simplify local instrument operation. The 32 KB Flash provides application-code capacity, and 1 KB of EEPROM can preserve setup information or a sample count. The low-voltage operation supports compact single-cell or multi-cell designs. Measurement accuracy ultimately depends on the selected analog front end and sensor interfaces rather than the MCU clock alone.
Dados de referência de engenharia para STM8L151C6U6 — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | STM8L152C6U6 | STM8L151C6U3 |
|---|---|---|---|
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | UFQFPN-48 (7 x 7 mm) | UFQFPN-48 (7 x 7 mm) | UFQFPN-48 (7 x 7 mm) |
| Architecture | 8-bit MCU | 8-bit MCU | 8-bit MCU |
| Maximum Clock Frequency | 16 MHz | 16 MHz | 16 MHz |
| Supply Voltage Range | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| I/O Port Count | 41 ports | 41 ports | 41 ports |
| Product Family | STM8L EnergyLite | STM8L EnergyLite | STM8L EnergyLite |
| Integrated LCD Controller | Yes | Yes | Yes |
| Real-Time Clock | Yes | Yes | Yes |
| Peripheral Set | STM8L151C6 peripheral arrangement | STM8L152C6 peripheral arrangement | STM8L151C6 peripheral arrangement |
Principais diferenciais
- Provides 41 I/O ports in a compact 48-pin low-power MCU (vs STM8L151C6U3)
- Combines 32 KB Flash with 1 KB retained data EEPROM (vs STM8L151C6U3)
- Offers a 48-pin UFQFPN option within the modular STM8L platform (vs STM8L152C6U6)
Notas de projeto
Design the supply path for the documented 1.8 V to 3.6 V operating range and place the required decoupling capacitors close to the supply and ground pins. Low-power MCU designs are often sensitive to trace resistance, supply ripple, and unintended current paths even when the logic voltage is correct. Validate brownout behavior, startup timing, and every peripheral's active current in the intended sleep, standby, and run modes. Use measured current rather than nominal averages when estimating battery life.
The STM8L151C6U6 uses a dense 48-pin UFQFPN footprint with an exposed thermal and electrical pad. Follow the manufacturer land pattern and pin-description table exactly, including pad dimensions and thermal-via recommendations. Route high-current and sensitive analog signals away from display and switching-node circuitry. Provide unobstructed copper beneath the package where the recommended thermal layout permits it, while preserving the required ground-plane continuity.
Do not select the STM8L151C6U3 as an unrestricted substitute without checking firmware size and peripheral requirements; its 3-versus-6 memory-density suffix indicates a configuration distinction that can affect stored code and resources. Likewise, the STM8L152C6U6 changes the peripheral set even though the package matches. Review the manufacturer pin tables, memory map, clock configuration, and application notes for both the original and proposed device before releasing a production footprint.
Assign external crystals, timing components, sensitive measurement inputs, and LCD connections early in schematic capture so their routing does not conflict with power or communication pins. Keep traces adjacent to a continuous ground reference, avoid long stubs from the MCU, and isolate display or interface switching from measurement inputs. If the design uses the integrated RTC, pay particular attention to supply noise and decoupling because timekeeping accuracy can be affected by power-system disturbances.
Informações de conformidade
The STM8L151C6 family is listed as active, but exact ordering-code compliance declarations and automotive qualification status require confirmation from current STMicroelectronics documentation.
