STM32L151CCU6 - 32MHz Cortex-M3 MCU | STMicroelectronics
Référence : STM32L151CCU6 ✓ ActifSTM32L151CCU6 Présentation
An ultra-low-power microcontroller is an embedded processing device designed to maintain useful performance while minimizing energy consumption during active operation, sleep, and low-power states. The STM32L151 belongs to the STM32L1 low-power MCU family, combining an ARM Cortex-M3 core, embedded memory, communication peripherals, analog resources, and low-power control features within one integrated package.
The STM32L151CCU6 provides 256 KB of Flash for firmware, 32 KB of SRAM for working data, and a 32-bit Cortex-M3 processor operating at up to 32 MHz. Its USB interface supports connected peripheral and embedded-control designs, while the two integrated operational amplifiers reduce the need for separate analog amplifiers in sensing and signal-conditioning circuits. The 48-pin UFQFPN format supports dense PCB layouts without using a large leaded package.
The device is positioned for applications that need more memory or peripheral breadth than the smallest STM32L devices while retaining the low-power characteristics of the STM32L1 family. Its 2.5 V and 3.3 V operating references are suitable for embedded equipment using conventional industrial and consumer supply levels. Exact peripheral details, clock limits, electrical limits, and current consumption should be selected from the manufacturer datasheet for the complete STM32L151 and STM32L152 device family.
Typical uses include USB-connected data loggers, low-power sensor nodes, compact industrial controllers, medical or laboratory instruments, and embedded access-control modules. The integrated operational amplifiers can support signal acquisition, current sensing, or analog front-end conditioning, while USB connectivity simplifies host-to-device data exchange. Firmware designers should also evaluate low-power modes, wake-up sources, and the peripheral mix when planning battery-operated equipment.
A critical design step is to verify the exposed-pad connection, pin assignment, and decoupling requirements directly against the STM32L151CCU6 pinout and recommended circuit diagrams. Place input and output capacitors close to their associated supply pins, route sensitive analog signals away from switching nodes, and follow the manufacturer guidance for exposed-pad thermal and layout requirements.
This product page combines the principal STM32L151CCU6 identity, memory, clock, connectivity, analog, and packaging characteristics with practical replacement guidance and design notes. It also distinguishes exact pin-compatible family options from substitutions that require software, memory, peripheral, or qualification review before deployment.
Alternatives de remplacement direct pour STM32L151CCU6 — 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 STM32L151CCU6 (même facteur de forme et même empreinte) — différant par Package, Flash Memory, Architecture, Product Type.
STM32L151CBU6
✅ Remplacement direct ⚠️ Spécifications non vérifiéesContactez-nous pour le prix
Voir la fiche technique →STM32L151CEU6
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
STM32L151C8U6
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
STM32L152C8U6
✅ Remplacement directContactez-nous pour le prix
Voir la fiche technique →STM32L152C8U6A
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
STM32L151CCU6 Valeurs maximales et caractéristiques électriques
| Product Type | Ultra-low-power 32-bit ARM Cortex-M3 microcontroller |
| CPU Core | ARM Cortex-M3 |
| Maximum CPU Frequency | 32 MHz |
| Architecture | 32-bit |
| Flash Memory | 256 KB |
| Flash Organization | 256K x 8 |
| SRAM | 32 KB |
| Integrated Connectivity | Universal Serial Bus (USB) |
| Integrated Operational Amplifiers | 2 |
| Operating Voltage Reference | 2.5 V / 3.3 V |
| Boîtier | 48-pin UFQFPN |
| Package Dimensions | 7 x 7 mm |
| Type de montage | Surface mount |
| ADC Resolution | 12-bit |
Guide de configuration des broches du STM32L151CCU6 7 x 7 mm
Configuration des broches du STM32L151CCU6 (boîtier 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 STM32L151CCU6.
Consultez la fiche technique pour la configuration complète des broches.
Applications typiques
STM32L151CCU6 convient pour 6 applications: USB Connected Sensor Node, Battery-Powered Industrial Monitor, Compact Data Acquisition Module, Medical and Laboratory Instrument, USB Access-Control Terminal, Portable Educational Controller.
USB Connected Sensor Node
The STM32L151CCU6 fits a USB-connected environmental or industrial sensor node because its 32 MHz ARM Cortex-M3 core can process samples locally, while 256 KB of Flash accommodates USB firmware, drivers, and application code. Its two integrated operational amplifiers can condition low-amplitude sensor signals without requiring separate amplifiers. Place the MCU between the sensor interface and USB transceiver circuitry, and confirm that the selected USB implementation meets the device voltage and signal requirements. The 48-pin UFQFPN package also supports compact sensor assemblies, although exposed-pad layout and thermal management must follow the manufacturer recommendations.
Recommandé
Battery-Powered Industrial Monitor
The STM32L151CCU6 is suitable for a battery-powered industrial monitor that combines periodic sensing with local processing and wired USB communication. Its ultra-low-power STM32L1 positioning is valuable when the equipment spends most of its operating time in a low-energy state, while the 32 MHz Cortex-M3 core handles filtering, control logic, and data formatting. The 256 KB Flash capacity provides room for calibration data, event logs, and USB stack code. Battery-life estimates should compare active current, sleep current, wake-up intervals, sensor duty cycle, and regulator quiescent current under the final operating conditions.
Recommandé
Compact Data Acquisition Module
The STM32L151CCU6 supports compact data-acquisition modules that need flexible analog conditioning, embedded control, and USB export. Its two integrated operational amplifiers can buffer sensor outputs or participate in gain and filtering stages, reducing board area when their electrical ranges match the signal. The 32-bit Cortex-M3 processor at 32 MHz supports real-time sampling control and communication handling, while 256 KB of Flash accommodates firmware, configuration tables, and USB functions. Confirm ADC, DAC, timer, and USB pin assignments against the exact package and ensure analog inputs stay within the device's specified operating limits.
Recommandé
Medical and Laboratory Instrument
The STM32L151CCU6 can serve as the embedded controller in a compact medical or laboratory instrument that requires low-power operation, USB connectivity, and basic analog signal conditioning. The integrated operational amplifiers may support low-level sensor interfaces, provided the input range, offset, noise, and stability requirements fit their specified capabilities. The 256 KB Flash capacity is useful for control firmware, calibration logic, and USB communication code. Because medical equipment may require application-specific standards and risk controls, the device should be selected within the complete system qualification process rather than treated as automatically compliant.
Recommandé
USB Access-Control Terminal
The STM32L151CCU6 fits a USB access-control terminal that combines peripheral identification, local decision logic, and host communication. The 32 MHz Cortex-M3 core can process commands and manage communication tasks, and 256 KB of Flash provides sufficient capacity for firmware, USB descriptors, configuration data, and diagnostic functions. Its low-power family positioning supports designs that spend substantial time idle between user or network events. The 48-pin UFQFPN footprint reduces board area, but the exposed pad, USB signal routing, input protection, and connector requirements should be addressed together during schematic and layout review.
Recommandé
Portable Educational Controller
The STM32L151CCU6 is appropriate for a portable educational controller intended to teach embedded programming, USB communication, timers, and basic analog interfacing. Its STM32L1 architecture combines a familiar ARM Cortex-M3 instruction set with low-power features, while 256 KB of Flash and 32 KB of SRAM provide practical room for demonstrations. The two operational amplifiers allow students to build simple sensor-conditioning experiments without immediately adding external analog ICs. Firmware examples should still be checked against the exact device variant because timer channels, alternate functions, and peripheral mappings can vary within the STM32L1 product range.
Recommandé
Données de référence d'ingénierie pour STM32L151CCU6 — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | STM32L151CBU6 | STM32L151CEU6 | STM32L151C8U6 | STM32L152C8U6 | STM32L152C8U6A |
|---|---|---|---|---|---|---|
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Package | 48-pin UFQFPN | 48-pin UFQFPN - same | 48-pin UFQFPN - same | 48-pin UFQFPN - same | 48-pin UFQFPN - same | 48-pin UFQFPN - same |
| CPU Core | ARM Cortex-M3 | ARM Cortex-M3 | ARM Cortex-M3 | ARM Cortex-M3 | ARM Cortex-M3 | ARM Cortex-M3 |
| Maximum CPU Frequency | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz | 32 MHz |
| Flash Memory | 256 KB | 128 KB | 512 KB | 64 KB | 64 KB | 64 KB |
| SRAM | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB | 32 KB |
| Operating Voltage Reference | 2.5 V / 3.3 V | 2.5 V / 3.3 V | 2.5 V / 3.3 V | 2.5 V / 3.3 V | 2.5 V / 3.3 V | 2.5 V / 3.3 V |
| Integrated USB | Yes | Yes | Yes | Yes | Yes | Yes |
Principaux différenciateurs
- Larger Flash capacity within the same package family (vs STM32L152C8U6A)
- More firmware headroom than the 128 KB STM32L151CBU6 (vs STM32L151CBU6)
- Lower memory cost option remains possible for constrained firmware (vs STM32L151C8U6)
Notes de conception
Assign the exposed pad and all 48 perimeter pins directly from the manufacturer package drawing. Place the required supply and bypass capacitors close to their corresponding pins, use short ground-return paths, and avoid routing USB or analog signals beneath the exposed-pad area. Confirm whether the exposed pad connects to VSS or another potential before defining the board copper and thermal-via pattern.
Build the power tree around the manufacturer's recommended operating voltage and per-pin decoupling arrangement. USB transceiver, pull-up, and analog circuitry can create transient loads that must remain within the device's supply limits. In battery-powered designs, estimate total energy from the MCU's active and sleep currents plus regulator, sensor, and interface losses rather than using the processor frequency alone.
Keep analog inputs connected to the integrated operational amplifiers away from USB data traces, switching nodes, and digital return currents. Use a continuous ground reference where practical, minimize loop area around sensitive nodes, and follow the manufacturer's pin-specific guidance for analog and supply connections. Validate the final layout for USB signal integrity and exposed-pad thermal performance using the specified test procedures.
Do not treat a mechanically similar STM32L1 device as an automatic firmware-compatible replacement. Check Flash capacity, SRAM, USB implementation, operational-amplifier availability, alternate-function mapping, clock tree, bootloader behavior, and pin multiplexing before substituting any listed alternative. After hardware substitution, rebuild and retest the firmware image rather than assuming the original binary will operate without modification.
Informations de conformité
Compliance status must be confirmed using the exact STM32L151CCU6 product page, ordering information, and manufacturer declaration.