STM8L151C8T7 - 16MHz 64KB Ultra-Low-Power MCU | STMicroelectronics
Référence : STM8L151C8T7 ✓ ActifSTM8L151C8T7 Présentation
An ultra-low-power microcontroller is a semiconductor designed to minimize energy consumption while providing programmable control, communication interfaces, and digital I/O. The STM8L15xx family sits within the broader hierarchy of 8-bit microcontroller, embedded controller, semiconductor, and power-managed electronic system. Its low operating voltage and energy-saving modes are useful when the target equipment must operate from a single coin-cell cell, rechargeable cell, or compact energy-harvesting source.
The STM8L151C8T7 provides 64 KB of Flash for firmware, 16 MHz processing capability, and 41 I/O ports for external sensors, indicators, and control interfaces. Embedded EEPROM supports parameter retention without consuming the Flash program area. An integrated SWIM debug interface provides in-application debugging and fast Flash programming, helping shorten firmware development and production-test cycles while avoiding a separate external debug connector.
STMicroelectronics describes the STM8L15xx6/8 devices as ultra-low-power products built around an enhanced STM8 CPU core. The combination of low-voltage operation, extensive GPIO, embedded nonvolatile memory, and a 48-pin LQFP makes the part suitable for designs that need more I/O than a compact 20-pin or 32-pin microcontroller package can provide. The 7 mm by 7 mm outline also preserves routing flexibility compared with a larger leaded package.
Typical uses include compact industrial sensing, energy-conscious instrumentation, low-power data loggers, building controls, and connected measurement modules. The 41 I/O ports can support digital inputs, alarm outputs, display segments, and communication transceivers, while the 16 MHz CPU handles protocol formatting, acquisition control, and local system logic. Its 1.8 V to 3.6 V supply range also allows direct operation from common low-voltage rails without a higher-voltage interface requirement.
When laying out the board, keep the SWIM programming interface accessible and follow the manufacturer pin and land-pattern guidance exactly. Confirm the selected Flash size, EEPROM workflow, clock setup, and low-power mode requirements in firmware before production. Because this MCU combines many I/O functions in a 48-LQFP package, careful decoupling and signal routing remain essential for reliable operation across the full 1.8 V to 3.6 V supply range.
This page organizes the key electrical characteristics, package information, design considerations, and qualified replacement options around the STM8L151C8T7. It also identifies where firmware, PCB, or supply-voltage changes are required before considering another STM8L15xx device as a drop-in replacement.
Alternatives de remplacement direct pour STM8L151C8T7 — 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 STM8L151C8T7 (même facteur de forme et même empreinte) — différant par Architecture, Package.
STM8L151C8T6
✅ Remplacement direct ⚠️ Spécifications non vérifiéesContactez-nous pour le prix
Voir la fiche technique →STM8L152C8T6
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$1.5586 / unité
Voir la fiche technique →STM8L151C8T7 Valeurs maximales et caractéristiques électriques
| Product Type | 8-bit ultra-low-power microcontroller |
| Series | STM8L EnergyLite |
| Maximum CPU Frequency | 16 MHz |
| Flash Memory | 64 KB |
| Flash Organization | 64K x 8 bits |
| Architecture | 8 bit |
| Tension d'alimentation de fonctionnement | 1.8 V to 3.6 V |
| I/O Port Count | 41 ports |
| Integrated EEPROM | Present |
| Debug Interface | SWIM hardware interface |
| Programming Method | Single-supply Flash programming |
| Package Type | 48-LQFP |
| Package Body Size | 7 mm x 7 mm |
| Type de montage | Surface mount |
| Statut du cycle de vie | Active |
Guide de configuration des broches du STM8L151C8T7 7 mm x 7 mm
Configuration des broches du STM8L151C8T7 (boîtier 7 mm 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 STM8L151C8T7.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
STM8L151C8T7 convient pour 6 applications: Battery-Powered Environmental Sensors, Industrial Data Loggers, Low-Power Building Control, Metering and Utility Displays, Compact Serial Gateways, Security and Access-Control Panels.
Battery-Powered Environmental Sensors
The STM8L151C8T7 fits compact environmental monitoring because its 16 MHz 8-bit core can supervise digital sensors while its 41 I/O ports reduce the need for external logic. The 1.8 V to 3.6 V supply range allows direct operation from a low-voltage cell or regulator. Place the MCU near the sensor interface, disable unused peripherals before entering the required sleep mode, and duty-cycle high-current sensor paths. This design reduces board size and helps control battery energy use while retaining 64 KB of Flash for acquisition, filtering, and communication firmware.
Recommandé
Industrial Data Loggers
The STM8L151C8T7 is appropriate for industrial data-logging equipment that combines sensor acquisition, local status control, and low-voltage power management. Its 64 KB Flash stores firmware and calibration constants, while the 41 available ports can connect digital inputs, alarm lines, and status indicators. The 16 MHz processor provides sufficient throughput for protocol formatting and local control without a larger processor. For field reliability, use the appropriate transient protection and verify the regulator’s startup behavior across the complete 1.8 V to 3.6 V operating range.
Recommandé
Low-Power Building Control
The STM8L151C8T7 supports compact building-control nodes that monitor switches, contact inputs, indicators, and alarm outputs on a low-voltage supply. Its 41 I/O ports provide substantial control capacity, and the 16 MHz 8-bit core can implement debouncing, event handling, and local state management. Use the SWIM interface during installation and service so firmware can be programmed without adding a permanent connector. In permanent installations, select the low-power operating mode and wake sources that match the required update latency to avoid unnecessary battery consumption.
Recommandé
Metering and Utility Displays
The STM8L151C8T7 is well suited to compact metering equipment requiring local processing, indicator control, and communication support. The 64 KB Flash provides room for calibration tables, display handling, and communication firmware, while 41 I/O ports can serve segment control, button inputs, and alarm signals. Its 1.8 V to 3.6 V range supports low-voltage supply architectures commonly used in battery-assisted meters. Keep display and communication interfaces on appropriately separated nets, and account for load-dependent supply noise in the layout and firmware filtering strategy.
Recommandé
Compact Serial Gateways
The STM8L151C8T7 can act as the supervisory controller in a small serial gateway when local protocol conversion, status reporting, and configurable I/O are required. Its 16 MHz core handles framing and control tasks, while the 48-LQFP package exposes enough pins for a serial transceiver, configuration interface, and indicators. The integrated SWIM debug interface supports in-circuit firmware updates in deployed equipment. Validate logic levels, baud-rate tolerance, and transceiver direction control against each interface because the MCU supply range alone does not establish electrical compatibility with every external device.
Recommandé
Security and Access-Control Panels
The STM8L151C8T7 fits compact access-control and security panels that need numerous digital inputs and outputs in a small board area. Its 41 I/O ports can support door contacts, relay-control signals, status LEDs, and tamper inputs, while the 16 MHz core performs event processing and local state retention. The SWIM interface enables firmware updates without removing the enclosure. Use the MCU’s low-power modes carefully because wake latency and continuous monitoring requirements determine the appropriate duty cycle, and validate all security functions against the complete system threat model.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour STM8L151C8T7 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | STM8L151C8T6 | STM8L152C8T6 |
|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 48-LQFP (7x7) | 48-LQFP (7x7) | 48-LQFP (7x7) |
| CPU Frequency | 16 MHz | 16 MHz | 16 MHz |
| Flash Memory | 64 KB | 64 KB | 64 KB |
| CPU Architecture | 8-bit STM8 | 8-bit STM8 | 8-bit STM8 |
| Temperature-Grade Suffix | T7 | T6 | T6 |
| Debug Interface | SWIM | SWIM | SWIM |
Principaux différenciateurs
- Higher temperature-grade ordering option within the same STM8L151C8 family (vs STM8L151C8T6)
- 64 KB Flash with 41 I/O ports in a 7 mm by 7 mm LQFP (vs STM8L152C8T6)
- Low-voltage operation and integrated development support (vs STM8L152C8T6)
Notes de conception
Design the supply network for the full 1.8 V to 3.6 V operating range and place the manufacturer-recommended bypass capacitors directly beside the corresponding power and ground pins. In a low-power design, measure startup current as well as sleep current because reset behavior, enabled peripherals, and regulator quiescent current can dominate battery life. Confirm that the regulator maintains the required voltage during wake-up and peripheral activation.
Implement the 48-LQFP footprint from the manufacturer land-pattern drawing, including pad dimensions, solder-mask configuration, and paste stencil recommendations. Keep the SWIM programming signals accessible for manufacturing and service, and route them away from high-current switching nodes. A dense 7 mm by 7 mm package can still suffer from interrupted return paths if ground-plane planes are split beneath the device.
Do not treat another STM8L15xx device as interchangeable solely because it uses a 48-LQFP package. Check the temperature-grade suffix, EEPROM and RAM capacity, peripheral mapping, clock tree, pin multiplexing, and firmware startup sequence. The T7 and T6 ordering codes indicate different temperature grades, while moving to the STM8L152 family can introduce peripheral and software differences even when the core frequency and Flash size remain the same.
The 41-port count does not mean 41 pins are freely usable for product signals. Reset, power, ground, SWIM, clock, and other alternate-function assignments reduce externally available GPIO. Assign pins from the manufacturer pin-description table, reserve programming access, and verify alternate-function conflicts in the device configuration before placing external circuitry.
Informations de conformité
No specific RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals declarations were included in the manufacturer and distributor information for this part.
