STM8L151K4T6 - 16MHz 16KB Ultra-Low-Power MCU | STMicroelectronics
Référence : STM8L151K4T6 ✓ ActifSTM8L151K4T6 Présentation
An ultra-low-power microcontroller is a semiconductor controller designed to minimize energy consumption while retaining the processing, sensing and communication functions needed for embedded products. The STM8L151 belongs to the STM8L hierarchy of low-power 8-bit MCUs, with the STM8L151K4 family positioned between simpler low-cost STM8 devices and higher-density members with larger memory capacities. Its analog and timing resources allow the MCU to supervise sensors, operate human-interface controls and manage low-speed communications without requiring several discrete components.
Key features include 16 KB Flash, 2 KB RAM, 1 KB EEPROM and a maximum 16 MHz clock. Integrated resources include an ADC, DAC, comparators, timers, USART, I2C and SPI interfaces, plus RTC and LCD-related capabilities identified for the STM8L151 family. These peripherals reduce external component count in battery-operated instruments, small industrial controls, sensor nodes and compact consumer equipment.
The STM8L architecture is based on an 8-bit CISC-style core and provides an economical platform for control-oriented firmware. Its combination of EEPROM, RTC capability, analog peripherals and multiple communication interfaces allows designers to retain calibration data, acquire analog inputs, produce an analog output and exchange data with external sensors or actuators from one controller. The 32-LQFP package also exposes enough I/O for keypad scanning, display control and peripheral connections in space-constrained designs.
Typical applications include battery-powered measurement instruments, compact energy meters, industrial sensor interfaces, LCD-based control panels, environmental monitoring, portable accessories and low-power building-control nodes. Its serial interfaces support sensors and external transceivers, while the timers and comparators simplify periodic sampling, edge detection and threshold-based control tasks.
The principal design consideration is the operating-voltage envelope. Distributor data identifies 2.5 V and 3.3 V supply use, while an operating-power-supply indication of 3.6 V also appears in available material; designers must resolve the exact minimum and maximum limits against the manufacturer datasheet for the selected voltage variant before final schematic release. External bypass capacitors, oscillator requirements and unused-pin handling should follow ST's reference guidance.
This page consolidates verified manufacturer and distributor information, same-package alternatives, parameter comparisons and practical selection guidance. It adds engineering context around memory, interfaces, analog functions and supply constraints while clearly identifying specifications that still require confirmation from the manufacturer datasheet.
Alternatives de remplacement direct pour STM8L151K4T6 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec STM8L151K4T6 (même facteur de forme et même empreinte) — différant par Architecture, Package, Flash Memory, Product Family, RTC.
STM8L152K4T6
✅ Remplacement direct ⚠️ Spécifications non vérifiéesContactez-nous pour le prix
Voir la fiche technique →STM8L101K4T6
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
STM8L151K6T6
✅ Remplacement direct ⚠️ Spécifications non vérifiéesContactez-nous pour le prix
Voir la fiche technique →STM8L152K6T6
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
STM8L101K6T6
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
STM8L151K4T6 Valeurs maximales et caractéristiques électriques
| Product Type | 8-bit ultra-low-power microcontroller |
| Architecture | STM8 8-bit CISC |
| Fréquence d'horloge maximale | 16 MHz |
| Flash Memory | 16 KB (16K x 8) |
| RAM | 2 KB |
| Data EEPROM | 1 KB |
| Boîtier | 32-pin LQFP (7x7 mm) |
| Type de montage | Surface Mount |
| Supply Options | 2.5 V and 3.3 V |
| ADC | Integrated analog-to-digital converter |
| DAC | Integrated digital-to-analog converter |
| Comparators | Integrated comparators |
| Serial Interfaces | USART, I2C and SPI |
| Timers | Integrated timers |
| RTC | Real-time clock capability |
| LCD Support | LCD controller capability |
| Halogen-Free Status | Compliant |
| Product Family | STM8L ultra-low-power 8-bit MCU family |
Guide de configuration des broches du STM8L151K4T6 32-pin lqfp (7x7 mm)
Configuration des broches du STM8L151K4T6 (boîtier 32-pin lqfp (7x7 mm)). Ce circuit intégré numérique comprend des GPIO, des interfaces de communication (UART, SPI, I2C) et des broches d'alimentation. Consultez la fiche technique du fabricant pour les fonctions alternatives des broches et les options de configuration. Indispensable pour la conception de systèmes embarqués et la conception de circuits imprimés.
Aucune donnée de brochage détaillée disponible pour STM8L151K4T6.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
STM8L151K4T6 convient pour 6 applications: Battery-Powered Environmental Sensor Nodes, Compact Industrial Data Loggers, LCD-Based Control Panels, Low-Power Home and Building Controls, Portable Measurement Instruments, Automotive and Accessory Control Modules.
Battery-Powered Environmental Sensor Nodes
STM8L151K4T6 fits compact environmental sensing because its 16 MHz STM8 8-bit core can process sensor readings while the integrated ADC eliminates a separate analog front end. The available 2 KB RAM and 1 KB EEPROM support temporary measurement buffering, calibration values and configuration data without adding another memory component. USART, I2C and SPI interfaces allow connection to temperature, humidity, pressure or gas sensors, while the STM8L low-power architecture supports duty-cycled acquisition. The measurable benefit is reduced component count and board area, although final battery life depends on the selected sleep mode, wake source, sensor current and duty cycle.
Recommandé
Compact Industrial Data Loggers
STM8L151K4T6 can serve as the control and communications hub in a compact industrial data logger. Its 16 KB Flash accommodates application firmware and configuration tables, while 2 KB RAM and 1 KB EEPROM provide local working and nonvolatile storage. The integrated ADC captures process variables, timers establish periodic sampling intervals, and USART or SPI can transfer records to a host or radio module. Its 32-pin LQFP package keeps the controller compact compared with a larger multi-pin MCU. The principal tradeoff is limited memory, so engineers should define logging depth and buffering requirements before selecting this device.
Recommandé
LCD-Based Control Panels
STM8L151K4T6 is appropriate for compact LCD control panels because the STM8L151 family includes LCD support, timers and a 16 MHz processing core in one 32-pin LQFP device. The MCU can scan buttons, update a segment or matrix display, process analog inputs and supervise an actuator output without requiring a separate display controller. Its 2 KB RAM can support display buffers and interface state, although application-specific screen complexity must be checked against available memory. Compared with a higher-density MCU, this option reduces footprint while retaining the timers, ADC and serial interfaces commonly required in simple operator panels.
Recommandé
Low-Power Home and Building Controls
STM8L151K4T6 supports low-power building-control nodes where local sensing, logic and serial connectivity are required without a high-performance processor. The integrated ADC can monitor resistive sensors, comparators can perform simple threshold decisions, and RTC capability supports time-based control functions. USART, I2C and SPI allow the controller to interface with room sensors, relay drivers or communication modules. The 32-LQFP footprint and 2.5 V or 3.3 V supply associations make it suitable for compact electronics, but the exact voltage range and sleep consumption must be confirmed from the manufacturer datasheet before calculating node lifetime.
Recommandé
Portable Measurement Instruments
STM8L151K4T6 is useful in portable measurement instruments because it combines a 16 MHz 8-bit core with ADC, DAC, comparators, timers and EEPROM in a 32-pin LQFP. The ADC can acquire sensor signals, the DAC can generate a reference or test output, and the timers can support measurement timing or control functions. EEPROM can retain calibration coefficients, while serial interfaces simplify connection to a display, data logger or external transceiver. Compared with adding separate analog and timer ICs, the integrated MCU can reduce board area and firmware complexity, although the 16 KB Flash limit requires disciplined code organization for feature-rich instruments.
Recommandé
Automotive and Accessory Control Modules
STM8L151K4T6 can support compact accessory-control modules that require low-power operation, several serial interfaces and analog monitoring. Its timers and comparators are useful for debouncing, edge detection and threshold control, while the ADC monitors switches, sensors or analog feedback lines. USART, I2C and SPI provide paths to actuators, sensors and external communication hardware. The 32-pin LQFP package supports compact board layouts, and the target's 16 MHz clock is adequate for supervisory control rather than intensive computation. However, automotive use requires confirmation of temperature range, EMC performance, AEC-Q100 status and any hardware-safety requirements; those data were not present in the supplied sources.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour STM8L151K4T6 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | STM8L152K4T6 | STM8L101K4T6 | STM8L151K6T6 | STM8L152K6T6 | STM8L101K6T6 |
|---|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | LQFP-32 (7x7 mm) | LQFP-32 (7x7 mm) | LQFP-32 (7x7 mm) | LQFP-32 (7x7 mm) | LQFP-32 (7x7 mm) | LQFP-32 (7x7 mm) |
| Flash Memory | 16 KB | 16 KB | 16 KB | 32 KB | 32 KB | 32 KB |
Principaux différenciateurs
- Target density combines 16 KB Flash with 2 KB RAM (vs STM8L151K6T6)
- Same-package STM8L152 family option for feature migration (vs STM8L152K4T6)
- Analog conversion and comparison integrated with the MCU (vs STM8L101K4T6)
- Multi-interface integration reduces external logic (vs STM8L152K6T6)
Notes de conception
Resolve the exact supply limits from the manufacturer datasheet before schematic release. The verified distributor descriptions associate STM8L151K4T6 with 2.5 V and 3.3 V operation, while another listing states 3.6 V operating power supply without providing the full permitted range. Verify minimum voltage, maximum voltage, ADC accuracy conditions, startup behavior and brownout settings. Place the required local bypass capacitors close to the supply and ground pins, and confirm decoupling values against the datasheet's application guidance.
Keep the 32-pin LQFP footprint compatible with the 7x7 mm package and route high-impedance analog inputs away from switching nodes and serial data lines. The integrated ADC is useful, but its accuracy still depends on clean reference routing, suitable source impedance and analog grounding. Review unused pins and external pull requirements in the official pin table rather than assuming every unconnected pin may be left floating. Because the supplied results do not include the numbered pin table, use the manufacturer package drawing for land pattern and pin-1 orientation.
Do not treat any same-package STM8L candidate as an automatic firmware drop-in. Even when the 32-LQFP footprint and memory ratings align, ADC channel mapping, timer channels, interrupts, RTC features, security peripherals and low-power wake sources can differ between STM8L subfamilies. Validate the alternative's complete pin table and reference manual, then rebuild the project against its device definition. Treat STM8L151K4T6TR as a shipment-format variant of the same device rather than a distinct engineering alternative.
Estimated current-consumption work should begin with the MCU's active and low-power currents from the official datasheet, then add each external sensor, pull network and communication device. Average consumption equals active current multiplied by active duty cycle plus the sum of sleep or standby current terms. Because the supplied excerpts do not state the complete mode-current table or operating-temperature limits, no defensible battery-life figure can be published from these search results. Validate the final current profile on physical hardware at the intended temperature.
Informations de conformité
The target-specific GlobalSpec search result states halogen-free compliant. The supplied data does not provide a definitive target-specific RoHS, REACH, lead-free, conflict-minerals or AEC-Q100 declaration, so those fields remain unknown. Confirm current declarations with STMicroelectronics before regulatory use.