STM8L151K6T3 - 8-Bit 16MHz Ultra-Low-Power MCU | STMicroelectronics
Référence : STM8L151K6T3 ✓ ActifSTM8L151K6T3 Présentation
An ultra-low-power 8-bit microcontroller is a category of embedded semiconductor intended to minimize energy consumption while executing control tasks. Within the broader hierarchy, the STM8L151K6T3 belongs to the STM8L family, STM8 8-bit microcontrollers, and the microcontroller product class. Its EnergyLite architecture is relevant to battery-operated instruments, low-power sensors, meters, and portable equipment where duty-cycled sleep operation can extend operating time between battery replacements or maintenance visits.
The STM8L151K6T3 provides 32 KB of Flash for firmware, 1 KB of data EEPROM for retained parameters, and a maximum clock frequency of 16 MHz. Its 41 I/O ports support external interfacing, while integrated 12-bit ADC and timer resources reduce the need for separate components. The 1.8 V to 3.6 V operating range accommodates common 2.5 V and 3.3 V system rails. The 32-LQFP package measures 7 x 7 mm and supports surface-mount manufacturing.
The STM8L151K6T3 is positioned between simple 8-bit controllers and more complex 32-bit microcontrollers. It provides the direct addressing and compact peripheral set associated with the STM8 family while retaining a 16 MHz operating clock. The 32 KB Flash capacity supports more structured firmware than the smallest STM8 devices, and the inclusion of EEPROM and an ADC makes the part suitable for self-contained measurement and control nodes without extensive external circuitry.
Typical applications include compact industrial control modules, battery-powered environmental sensors, electronic utility meters, compact keypads, and low-power human-interface devices. In a sensing product, the MCU can acquire analog measurements through its 12-bit ADC, apply control logic, and manage a low-duty-cycle operating profile. The 41 available I/O ports also make it practical to connect multiple digital inputs, displays, indicators, or communication interfaces.
Designers should review the complete manufacturer datasheet for the exact pin assignments, peripheral multiplexing, oscillator options, and low-power modes before laying out the PCB. Particular attention should be paid to supply decoupling, analog-input routing, unused I/O handling, and the configuration of pins shared by multiple peripherals. These details are essential for reliable low-power operation and avoiding conflicts between LCD, timer, ADC, and communication functions.
This page consolidates the verified manufacturer, distributor, and cross-reference information for the STM8L151K6T3, then adds application guidance, parameter comparisons, procurement context, and drop-in replacement analysis. It is intended to help engineers identify whether the 32 KB, 16 MHz, 8-bit configuration matches their PCB and firmware requirements before committing to a design.
Alternatives de remplacement direct pour STM8L151K6T3 — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
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)
STM8L152K6T3
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
STM8L151K8T3
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
STM8L151K4T3
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
STM8L151K6T3 Valeurs maximales et caractéristiques électriques
| Product Type | 8-bit ultra-low-power microcontroller |
| Product Family | STM8L EnergyLite |
| Maximum Clock Speed | 16 MHz |
| Flash Memory | 32 KB |
| Program Memory Organization | 32K x 8 bits |
| Data EEPROM | 1 KB |
| Supply Voltage Range | 1.8 V to 3.6 V |
| Power-Down Supply Voltage | Down to 1.65 V |
| I/O Port Count | 41 ports |
| ADC Resolution | 12-bit |
| Boîtier | 32-LQFP, 7 x 7 mm |
| Type de montage | Surface mount |
| Plage de température de fonctionnement | -40°C to +85°C |
| Statut du cycle de vie | Active |
| Real-Time Clock | Supported |
| LCD Support | Supported |
| Timer and PWM Support | Supported |
| Core Architecture | 8-bit CISC |
Guide de configuration des broches du STM8L151K6T3 32-lqfp, 7 x 7 mm
Configuration des broches du STM8L151K6T3 (boîtier 32-lqfp, 7 x 7 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 STM8L151K6T3.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
STM8L151K6T3 convient pour 6 applications: Battery-Powered Environmental Sensors, Compact Industrial Control Modules, Electronic Utility Meters, Low-Power Human-Interface Devices, Portable Measurement Instruments, Low-Power Actuator Controllers.
Battery-Powered Environmental Sensors
The STM8L151K6T3 fits battery-powered environmental sensors because it combines a 16 MHz 8-bit core, 32 KB Flash, 1 KB EEPROM, and an integrated 12-bit ADC in a compact 32-LQFP package. The ADC can acquire sensor signals without requiring a separate converter, while EEPROM can retain calibration or configuration data. Its 1.8 V to 3.6 V operating range supports low-voltage sensor nodes. The primary engineering consideration is duty cycling: average current depends on the selected STM8L low-power mode, sensor excitation interval, and time spent in active processing.
Recommandé
Compact Industrial Control Modules
The STM8L151K6T3 is appropriate for compact industrial control modules that need deterministic 8-bit processing, numerous external connections, and low-voltage operation. Its 41 I/O ports provide flexibility for digital inputs, status indicators, relays, and local controls, while the 12-bit ADC supports analog process monitoring. The 32 KB Flash capacity accommodates structured control firmware without pushing into a larger MCU architecture. For industrial equipment, engineers should define the required temperature grade, isolate noisy inputs, protect externally accessible connectors, and verify every alternate pin function in the manufacturer documentation.
Recommandé
Electronic Utility Meters
The STM8L151K6T3 supports compact utility-meter designs that combine low-power sensing, local data retention, and simple display or keypad control. Its 1 KB EEPROM is useful for configuration values and counters, while 32 KB Flash accommodates meter firmware and protocol handling. The 41 I/O ports can support segmented displays, buttons, alarm outputs, and sensed lines, and the 12-bit ADC can process analog inputs. Meter accuracy ultimately depends on the external sensing network, reference design, calibration method, and selected low-power operating profile rather than the MCU name alone.
Recommandé
Low-Power Human-Interface Devices
The STM8L151K6T3 can serve as the controller in a compact keypad, access-control terminal, or other low-power human-interface device. Its 41 I/O ports provide ample connections for switch matrices, indicator LEDs, and display segments, while the 12-bit ADC can support analog controls or sensing. The 7 x 7 mm 32-LQFP package helps reduce board area in portable products. Engineers must account for LED current, debounce strategy, ESD protection, display timing, and whether the selected STM8L sleep mode can meet the product's response-time and battery-life targets.
Recommandé
Portable Measurement Instruments
The STM8L151K6T3 is well suited to portable measurement instruments that need an ADC, data retention, flexible I/O, and low-voltage operation in a compact package. The 12-bit ADC handles analog measurement channels, the 1 KB EEPROM can retain setup information, and the 16 MHz 8-bit processor supports responsive control and display updates. Its 32 KB Flash balance may limit large libraries or complex user interfaces, so firmware planning is important. Measurement accuracy also depends on analog conditioning, reference stability, grounding, shielding, and calibration beyond the MCU specifications.
Recommandé
Low-Power Actuator Controllers
The STM8L151K6T3 can control compact relays, valves, indicators, or other actuator circuitry when the board does not require a higher-performance processor. Its 41 I/O ports provide multiple digital channels, and the 12-bit ADC can monitor a supply or sensor input. The 1.8 V to 3.6 V range supports common embedded rails. In actuator designs, the MCU must be separated from inductive, motor, and switching loads through appropriate drivers, transient protection, grounding, and isolation where required; none of those protections are provided by the MCU package itself.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour STM8L151K6T3 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | STM8L151K6T6 | STM8L152K6T6 | STM8L152K6T3 | STM8L151K8T3 | STM8L151K4T3 |
|---|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 32-LQFP (7 x 7 mm) | 32-LQFP (7 x 7 mm) | 32-LQFP (7 x 7 mm) | 32-LQFP (7 x 7 mm) | 32-LQFP (7 x 7 mm) | 32-LQFP (7 x 7 mm) |
| Core Architecture | 8-bit | 8-bit | 8-bit | 8-bit | 8-bit | 8-bit |
| Maximum Clock Speed | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 16 MHz | 16 MHz |
| Flash Memory | 32 KB | 32 KB | 32 KB | 32 KB | 64 KB | 16 KB |
| Supply Voltage Range | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.8 V to 3.6 V |
| Operating Temperature Range | -40°C to +85°C | -40°C to +125°C | -40°C to +125°C | -40°C to +85°C | -40°C to +85°C | -40°C to +85°C |
| I/O Port Count | 41 ports | 41 ports | 41 ports | 41 ports | 41 ports | 41 ports |
| ADC Resolution | 12-bit | 12-bit | 12-bit | 12-bit | 12-bit | 12-bit |
Principaux différenciateurs
- Matches the common 32-LQFP industrial-control footprint (vs STM8L151K6T6)
- Provides a direct firmware-capacity upgrade (vs STM8L151K4T3)
- Offers higher memory capacity without changing the package (vs STM8L151K8T3)
- Maintains the standard STM8L151 temperature range (vs STM8L152K6T6)
Notes de conception
Design the supply network for the verified 1.8 V to 3.6 V operating range, including 2.5 V and 3.3 V rails. Place the required bypass capacitors close to the device power pins, keep analog and digital return currents separated where practical, and account for the 1.65 V power-down capability separately from the active operating range. Confirm capacitor voltage ratings, startup sequencing, and maximum supply limits in the manufacturer datasheet before releasing the schematic.
Use the verified 32-LQFP 7 x 7 mm footprint without relocating pins, and route sensitive oscillator, programming, and analog signals away from fast-switching traces. The verified 41 I/O ports can support multiple peripheral functions, so review alternate-function selection to avoid conflicts between LCD, timer, ADC, and other on-chip resources. Keep exposed pads and thermal paths unobstructed where applicable, and follow the manufacturer land-pattern and pin-definition documentation rather than relying only on the generic package name.
Do not assume that every same-package STM8L device is an automatic substitute. STM8L151 and STM8L152 variants can differ in peripheral availability, alternate functions, memory capacity, and temperature grade, while suffix changes can affect qualification. Before replacing STM8L151K6T3, compare the complete pin table, power and ground assignments, boot or programming pins, clock limits, ADC channels, timer resources, and firmware requirements. A 7 x 7 mm LQFP match alone does not prove functional equivalence.
Battery life should be calculated from the complete system power budget rather than the MCU name. Include sensor excitation, display current, pull-up or pull-down dissipation, regulator losses, and communication activity alongside the STM8L sleep-mode current. Use the manufacturer's power-mode and wake-up conditions to estimate average current. The verified data establishes the 1.8 V to 3.6 V supply range and 1 KB EEPROM, but it does not provide a specific quiescent-current figure, so no numeric battery-life claim should be made without deeper verification.
Informations de conformité
The supplied verified results identify the device as an active STM8L151K6 family member but do not provide extractable RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statements. No compliance claim has been inferred.
