STM8L151K6U6 - 16MHz 32KB 8-Bit MCU | STMicroelectronics
N.º de pieza: STM8L151K6U6 ✓ ActivoSTM8L151K6U6 Descripción general
An ultra-low-power microcontroller is an integrated semiconductor that combines a processor core, memory and peripherals while prioritizing low current consumption during active operation and sleep. The STM8L family belongs to the STM8 8-bit microcontroller hierarchy and addresses battery-powered instruments, compact sensors and low-power industrial products where energy efficiency and a compact footprint are more important than high arithmetic throughput.
Verified listing data identifies up to 32 KB of programmable Flash, 16 MHz maximum clock speed, 41 I/O ports, LCD support and a real-time clock. The STM8L151K6U6 also includes 1 KB of data EEPROM, allowing calibration values, configuration data and operating counters to be retained without consuming Flash. Its 1.8 V to 3.6 V supply range supports both 2 V and 3.3 V system architectures.
The STM8L architecture provides a direct CISC execution model and a broad set of embedded peripherals rather than an Arm Cortex application processor. Verified distributor information identifies the MCU as an 8-bit device with 16 MHz performance and 32 KB of Flash. The K6U6 designation corresponds to a 32-pin UFQFPN configuration, with an exposed thermal and electrical connection area supporting heat transfer and PCB integration.
Typical uses include low-energy sensor nodes, compact LCD instruments, portable measurement products, battery-operated controls and embedded industrial modules. The LCD interface and real-time clock are particularly useful in metering and user-interface designs, while the 41 I/O ports provide connections for sensors, switches, displays and communication peripherals in a small 5 x 5 mm package.
Designers should review the complete pin assignment and exposed-pad requirements in the manufacturer datasheet before layout because the supplied verification data does not publish a complete numbered pin table. Decoupling, exposed-pad grounding, programming access and low-power configuration also require board-level validation against the official device documentation.
This page consolidates verified manufacturer and distributor information, transparent sourcing limitations, package guidance and engineering-focused comparisons for the STM8L151K6U6. It distinguishes directly comparable STM8L variants from devices that require package or firmware changes and helps procurement teams evaluate the exact 32 KB, 32-pin ordering code.
Alternativas directas para STM8L151K6U6 — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con STM8L151K6U6 (mismo factor de forma y huella) — difiere en LCD Support, Flash Memory, Series, ADC, Comparators.
STM8L151K6U3
✅ Sustitución directaConsulte el precio
Ver hoja de datos →STM8L152K6U6
✅ Sustitución directaConsulte el precio
Ver hoja de datos →STM8L151K4U6
✅ Sustitución directa📋 Alternativa de referencia (no en el catálogo)
STM8L151K6U6 Valores máximos y características eléctricas
| Product Type | 8-bit ultra-low-power microcontroller |
| Series | STM8L EnergyLite |
| Maximum Clock Speed | 16 MHz |
| Core Architecture | STM8 8-bit CISC |
| Flash Memory | 32 KB |
| Data EEPROM | 1 KB |
| Supply Voltage Range | 1.8 V to 3.6 V |
| I/O Ports | 41 |
| LCD Support | Yes |
| Real-Time Clock | Yes |
| Package Type | 32-pin UFQFPN |
| Package Dimensions | 5 x 5 mm |
| Tipo de montaje | Surface mount |
| Delivery Package | Tray |
| Life Cycle Stage | Active |
Guía de configuración de pines de STM8L151K6U6 tray
Configuración de pines para STM8L151K6U6 (encapsulado tray). Este CI digital incluye GPIO, interfaces de comunicación (UART, SPI, I2C) y pines de alimentación. Consulte la hoja de datos del fabricante para conocer las funciones alternativas de los pines y las opciones de configuración. Esencial para el diseño de sistemas embebidos y el diseño de PCB.
No hay datos detallados de patillaje disponibles para STM8L151K6U6.
Consulte la hoja de datos para ver la configuración completa de patillas.
Aplicaciones típicas
STM8L151K6U6 es adecuado para 6 aplicacións: Battery-Powered Sensor Nodes, Compact LCD Metering Instruments, Portable Data Acquisition, Industrial Control Modules, Low-Energy Home and IoT Controllers, Battery-Operated Keypads and Access Controls.
Battery-Powered Sensor Nodes
The STM8L151K6U6 fits compact sensor nodes because it combines a 16 MHz 8-bit STM8L core, 32 KB of Flash and 41 I/O ports within a 5 x 5 mm UFQFPN package. Its 1.8 V to 3.6 V supply range supports low-voltage sensor assemblies and devices operating from 2 V or 3.3 V energy sources. The device is placed beside temperature, pressure or motion sensors, with firmware handling sampling and wake-up sequencing through its I/O ports. The principal benefit is integration: 32 KB avoids relying on an external memory device when moderate control code and data buffering are required. Final battery-life calculations still need the exact sleep current, active duty cycle and regulator efficiency from the manufacturer datasheet.
Recomendado
Compact LCD Metering Instruments
The STM8L151K6U6 is appropriate for compact metering instruments because the verified feature set includes LCD support, a real-time clock and 32 KB of Flash. A typical design uses the MCU to acquire measurements, format the display data and maintain timestamps without requiring a separate real-time-clock component. Its 41 I/O ports can serve keypad inputs, display control and sensor connections, while the 32-pin 5 x 5 mm UFQFPN package preserves board area. Compared with the STM8L151K4U6, the selected device provides twice the program memory, which can improve room for calibration tables and multi-screen firmware. The LCD electrical limits and alternate-function mapping must be confirmed directly from the manufacturer pin and peripheral documentation.
Recomendado
Portable Data Acquisition
STM8L151K6U6 can serve as the controller in a portable data-acquisition product where a 16 MHz processing rate, 32 KB program memory and 1 KB data EEPROM are sufficient. The MCU can coordinate analog or digital sensors, store calibration constants in EEPROM and transfer results through a serial interface. The 1.8 V to 3.6 V operating range allows integration with low-energy sensor and communication circuitry, while 41 I/O ports reduce the need for multiplexers. Compared with the 16 KB STM8L151K4U6, the K6U6 leaves 16 KB more code and constant-storage headroom for acquisition routines and field-update logic. Sampling accuracy and channel count remain dependent on the selected external sensors and analog front end.
Recomendado
Industrial Control Modules
The STM8L151K6U6 is suitable for compact industrial control modules that require deterministic embedded control without a high-power application processor. Its 8-bit STM8L CISC architecture runs up to 16 MHz and provides 41 I/O ports for digital inputs, outputs and peripheral connections. The 32 KB Flash supports control algorithms and configuration routines, while 1 KB of EEPROM can retain calibration or operating parameters. The 32-pin UFQFPN package is suitable for dense control boards, although industrial temperature and EMC requirements must be checked against the manufacturer limits. Compared with STM8L152K6U6, the STM8L151K6U6 is preferable when the extra STM8L152 capabilities are not needed, simplifying firmware qualification and embedded cost.
Recomendado
Low-Energy Home and IoT Controllers
STM8L151K6U6 can support compact IoT and smart-home sensor nodes because its ultra-low-power STM8L platform combines 16 MHz processing, 32 KB of Flash and 41 I/O ports in a small package. It can supervise switches, environmental sensors and simple actuators, using EEPROM for configuration values and the RTC for scheduled events. The 1.8 V minimum supply voltage permits operation from suitably regulated low-energy sources, reducing the need for a higher-voltage rail when compared with devices specified only for 3.3 V. Its advantage over STM8L151K4U6 is doubled Flash capacity, while its advantage over STM8L152K6U6 is avoiding unneeded advanced functions. Wireless connectivity requires an external radio, and radio sleep behavior must be included in the final power budget.
Recomendado
Battery-Operated Keypads and Access Controls
The STM8L151K6U6 is a practical controller for a battery-operated keypad or access-control peripheral because it combines low-voltage operation, RTC support, EEPROM and a 32 KB code budget. It can manage debounced key inputs, stored credentials or configuration parameters, indicator outputs and a serial host interface. The 41 I/O ports allow local keypad and status-led wiring without a separate GPIO expander, while the 5 x 5 mm package leaves space for a battery and protection circuitry. Relative to STM8L151K4U6, the K6U6 provides an additional 16 KB of program memory for access-control logic and future updates. The enclosure, switch life, battery leakage and security requirements still need application-specific validation.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para STM8L151K6U6 — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | STM8L151K6U3 | STM8L152K6U6 | STM8L151K4U6 |
|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 32-pin UFQFPN (5 x 5 mm) | 32-pin UFQFPN (5 x 5 mm) | 32-pin UFQFPN (5 x 5 mm) | 32-pin UFQFPN (5 x 5 mm) |
| Maximum Clock Speed | 16 MHz | 16 MHz | 16 MHz | 16 MHz |
| Flash Memory | 32 KB | 32 KB | 32 KB | 16 KB |
Diferenciadores clave
- Twice the program memory of the STM8L151K4U6 (frente a STM8L151K4U6)
- Maintains the full K6 memory configuration in a closely related ordering option (frente a STM8L151K6U3)
- Avoids unnecessary STM8L152-specific capabilities when they are not required (frente a STM8L152K6U6)
Notas de diseño
Treat the UFQFPN exposed pad as a mandatory electrical and thermal connection. Use the manufacturer land pattern, place the device according to its package drawing and connect the exposed pad to the appropriate ground plane rather than leaving it unconnected. Keep the 32-pin 5 x 5 mm footprint geometry and paste pattern unchanged unless a separate manufacturer-approved footprint has been selected. Because the complete pinout was not present in the supplied excerpts, verify power pins, ground pins, SWD programming access, reset and LCD functions against the current datasheet before release.
Calculate the average current from the measured active and sleep duties rather than selecting the regulator from peak current alone. The STM8L151K6U6 supports a 1.8 V to 3.6 V supply range, but operation at 16 MHz, rapid wake-up behavior and attached peripherals can change the effective current demand. Include sensor, radio and pull-up loads in the budget, verify the regulator can start the MCU without unacceptable droop, and measure the assembled system's sleep current. The supplied excerpts do not provide active or sleep-current figures, so those values must be taken from the manufacturer datasheet.
Place local decoupling close to each supply pin and return the exposed pad to a continuous ground reference with minimal interruption. Keep switching-converter loops, sensor analog inputs and LCD traces away from the MCU supply and clock paths. The 41 available I/O ports can simplify signal routing, but every assigned alternate function must be checked against the package pin map. Use a deliberate ground strategy even when most board area is available, because compact industrial or battery-powered products can couple motor, display and communication currents through shared return paths.
Información de cumplimiento
The supplied excerpts refer to RoHS and REACH comparison pages but do not explicitly state the compliance status of STM8L151K6U6. No AEC-Q100 qualification statement was provided for this non-automotive device.
