STM32L151VBT6 - 32MHz Cortex-M3 128KB MCU | STMicroelectronics
Teilenummer: STM32L151VBT6 ✓ AktivSTM32L151VBT6 Übersicht
A microcontroller is an integrated semiconductor device containing a processor core, nonvolatile program memory, working memory, peripherals, and communication interfaces. In the product hierarchy, the STM32L151VBT6 is an ARM Cortex-M3 MCU within the STM32L1 ultra-low-power family, combining embedded real-time control with low-power management for battery-powered and energy-conscious equipment.
The STM32L151VBT6 operates at up to 32 MHz and delivers 1.25 DMIPS/MHz according to the manufacturer information. Its 128 KB Flash supports application firmware, while 16 KB of SRAM provides working space for control routines and data processing. The 4 KB EEPROM allows frequently changed calibration, configuration, or serial data to be retained without consuming Flash space.
Its integrated feature set includes a 12-bit ADC, 12-bit DAC, USB, LCD support, programmable voltage detection, brownout reset, and ultra-low-power POR/PDR functions. The device offers a 1 MHz to 24 MHz crystal oscillator range and a 32 kHz oscillator for real-time-clock operation with calibration. These resources reduce external component requirements in sensing, monitoring, and embedded user-interface designs.
Typical uses include compact industrial sensors, USB-connected data loggers, low-power instrumentation, LCD-based control panels, battery-powered monitors, and portable measurement equipment. The large 100-pin package exposes substantially more I/O than smaller STM32L1 variants, allowing multiple sensors, displays, communications interfaces, and actuator-control signals to share one controller.
Designers should account for the higher pin count and board area when choosing this option, but the LQFP-100 format is particularly useful for through-hole prototyping and automated assembly. Firmware must configure the clock tree, low-power modes, USB transceiver, analog peripherals, and alternate-function routing before the full device capability becomes available. The pin-description and alternate-function tables in the manufacturer datasheet should be used for every PCB assignment.
This product page combines the manufacturer-described device characteristics with practical application guidance, footprint selection advice, and electrically focused alternatives. These engineering-oriented details help teams distinguish the STM32L151VBT6 from lower-pin-count, higher-memory, or functionally adjacent STM32L1 devices before committing to a board design.
Drop-in-Alternativen für STM32L151VBT6 – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Varianten dieser Serie
Modelle derselben Serie, die drop-in-kompatibel sind mit STM32L151VBT6 (gleiche Bauform und Footprint) – abweichend in Flash Memory, Package, SRAM, ADC Resolution, DAC Resolution.
STM32L151VBT6A
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
STM32L152VBT6A
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
STM32L151VCT6
✅ Drop-In ⚠️ Spezifikationen ungeprüftPreis auf Anfrage
Datenblatt ansehen →STM32L152VCT6
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
STM32L151VET6
✅ Drop-In ⚠️ Spezifikationen ungeprüft📋 Referenzalternative (nicht im Katalog)
STM32L151VBT6 Grenzwerte & elektrische Eigenschaften
| Product Type | Ultra-low-power 32-bit ARM Cortex-M3 microcontroller |
| Maximum CPU Frequency | 32 MHz |
| Core | ARM Cortex-M3 |
| Flash Memory | 128 KB |
| SRAM | 16 KB |
| EEPROM | 4 KB |
| Performance | 1.25 DMIPS/MHz |
| ADC Resolution | 12 bit |
| DAC Resolution | 12 bit |
| Crystal Oscillator Range | 1 MHz to 24 MHz |
| RTC Oscillator | 32 kHz with calibration |
| Versorgungsspannung | 2.5 V / 3.3 V |
| Brownout Reset | Ultra-safe low-power BOR with 5 selectable thresholds |
| Programmable Voltage Detector | PVD supported |
| USB Interface | Integrated USB |
| LCD Controller | Integrated LCD controller |
| Gehäuse | 100-pin LQFP, 14 x 14 mm |
| Montageart | Surface mount |
STM32L151VBT6 100-pin lqfp, 14 x 14 mm Pinbelegungsleitfaden
Pinbelegung für STM32L151VBT6 (100-pin lqfp, 14 x 14 mm-Gehäuse). Dieser digitale IC umfasst GPIO, Kommunikationsschnittstellen (UART, SPI, I2C) und Versorgungspins. Alternative Pin-Funktionen und Konfigurationsoptionen entnehmen Sie dem Herstellerdatenblatt. Unverzichtbar für Embedded-System-Design und PCB-Layout.
Keine detaillierten Pinbelegungsdaten verfügbar für STM32L151VBT6.
Siehe die Datenblatt für die vollständige Pin-Konfiguration.
Typische Anwendungen
STM32L151VBT6 ist geeignet für 6 Anwendungs: USB Connected Data Logger, Industrial Sensor and Condition Monitor, Battery-Powered Environmental Sensor, LCD Control Panel, Portable Medical Measurement Device, Compact USB Test and Measurement Instrument.
USB Connected Data Logger
The STM32L151VBT6 fits a USB-connected logger because it combines a 32 MHz ARM Cortex-M3 core with 128 KB of Flash, 16 KB of SRAM, 4 KB of EEPROM, and an integrated USB interface. Firmware can collect measurements from the 12-bit ADC, format them locally, and transfer them over USB without requiring a separate interface controller. The 4 KB EEPROM is useful for calibration records, counters, and configuration values. A 32 kHz RTC oscillator supports accurate timestamps, while the STM32L1 low-power features help reduce energy use between acquisition intervals.
Empfohlen
Industrial Sensor and Condition Monitor
The STM32L151VBT6 supports industrial monitoring systems that combine analog measurement, digital I/O, local storage, and communication. Its 12-bit ADC can sample pressure, temperature, or level signals after appropriate conditioning, while the large 100-pin LQFP provides enough pins for multiple digital inputs, sensor interfaces, and status indicators. The 32 MHz Cortex-M3 core supports filtering and local decision logic, and the 4 KB EEPROM retains calibration parameters. Brownout-reset thresholds and programmable voltage detection improve system behavior during unstable supply conditions.
Empfohlen
Battery-Powered Environmental Sensor
The STM32L151VBT6 is appropriate for a battery-powered environmental sensor because its STM32L1 architecture is designed for low-power operation and includes calibrated 32 kHz RTC timing. The MCU can wake periodically, sample the 12-bit ADC, update local values, and return to a low-power state between measurements. EEPROM preserves calibration and accumulated counters, reducing repeated writes to Flash. The 12-bit DAC can also generate an excitation or reference level where the sensor circuit requires a controlled analog output, although external regulator efficiency strongly influences total battery life.
Empfohlen
LCD Control Panel
The STM32L151VBT6 can serve as the controller for a compact LCD-based operator panel because it includes an LCD-controller resource alongside 12-bit ADC, DAC, and USB interfaces. The 32 MHz Cortex-M3 core is sufficient for menu handling, data display, input polling, and communication updates. Its 100-pin LQFP provides a generous selection of GPIO and alternate-function pins for display control, keypad scanning, and status outputs. The 4 KB EEPROM can preserve user settings, while the RTC oscillator supports timestamps and event logging in equipment that must retain a local time reference.
Empfohlen
Portable Medical Measurement Device
The STM32L151VBT6 can support compact medical or wellness measurement equipment when its analog resources and low-power control are integrated with suitable signal-conditioning and isolation circuitry. The 12-bit ADC supports sensor acquisition, the DAC supports controlled stimulus or offset generation, and the 32 MHz Cortex-M3 core performs filtering and control. Four kilobytes of EEPROM retains configuration and calibration data, while the RTC oscillator enables timed procedures. Production medical designs still require appropriate electrical isolation, safety validation, regulatory review, and an IEC 60601-compliant system architecture.
Empfohlen
Compact USB Test and Measurement Instrument
The STM32L151VBT6 is well suited to a compact USB test and measurement instrument because it integrates USB, fast 12-bit conversion, a calibrated 32 kHz timebase, and substantial I/O in one package. Firmware can orchestrate measurements, maintain instrument settings, and present results through a USB virtual interface. The 100-pin LQFP exposes enough connections for analog inputs, trigger signals, communication peripherals, and user controls. Its 128 KB Flash supports application code and calibration tables, while 4 KB of EEPROM can hold serial numbers, offsets, and persistent setup information.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für STM32L151VBT6 – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | STM32L151VBT6A | STM32L152VBT6A | STM32L151VCT6 | STM32L152VCT6 | STM32L151VET6 |
|---|---|---|---|---|---|---|
| Package | 100-pin LQFP, 14 x 14 mm | 100-pin LQFP, 14 x 14 mm | 100-pin LQFP, 14 x 14 mm | 100-pin LQFP, 14 x 14 mm | 100-pin LQFP, 14 x 14 mm | 100-pin LQFP, 14 x 14 mm |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| 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 | 128 KB | 128 KB | 128 KB | 256 KB | 256 KB | 512 KB |
| SRAM | 16 KB | 16 KB | 32 KB | 16 KB | 32 KB | 16 KB |
| ADC Resolution | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit |
| DAC Resolution | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit |
| RTC Oscillator | 32 kHz with calibration | 32 kHz with calibration | 32 kHz with calibration | 32 kHz with calibration | 32 kHz with calibration | 32 kHz with calibration |
Wichtigste Unterscheidungsmerkmale
- Balanced 128 KB Flash and 16 KB SRAM configuration (vs. STM32L151VET6)
- Lower SRAM requirement with the same 32 MHz processing core (vs. STM32L152VBT6A)
- Lower Flash option for power-constrained embedded control (vs. STM32L151VCT6)
Designhinweise
Assign the 100-pin LQFP footprint from the exact manufacturer package drawing and cross-check every signal against the pin-description and alternate-function tables. Place the 32 kHz RTC crystal, main crystal or clock source, USB data lines, and analog inputs according to the recommended layout. Keep analog inputs away from high-switching-node traces and provide a quiet ground reference for the ADC and DAC. The large pin count offers flexibility, but incorrect alternate-function selection can still cause timing or analog-performance problems.
Design the supply network around the device's 2.5 V and 3.3 V operating options and the exact operating-mode limits in the manufacturer electrical-characteristics table. Place local input and output capacitors close to their associated supply pins, maintain the required startup sequencing, and route return currents without long shared paths through analog ground. Verify brownout, POR/PDR, and programmable voltage-detection thresholds against the product's real supply tolerances so transient events do not cause unintended resets or corrupted state.
Do not treat the STM32L151, STM32L152, and higher-Flash STM32L1 variants as firmware-identical merely because they share the Cortex-M3 core and LQFP-100 footprint. Check boot behavior, peripheral availability, SRAM requirements, vector-table details, and alternate-function assignments before changing the ordering code. A memory increase can also alter linker placement and application architecture. Perform a complete compile, peripheral smoke test, and boundary test on the intended replacement rather than relying only on pin compatibility.
For battery-powered operation, calculate average current from the exact firmware duty cycle rather than using the active-mode current alone. Include sensor biasing, regulator quiescent current, pull resistors, indicator LEDs, USB attachment, and RTC-domain consumption in the budget. The calibrated 32 kHz oscillator supports low-power timing, but an unsuitable external load capacitance or poor layout can increase oscillator current or reduce timing accuracy. Validate sleep-mode entry, peripheral wake-up behavior, and EEPROM write frequency in the final hardware configuration.
Compliance-Informationen
The device is an industrial microcontroller and is not presented as an AEC-Q100-qualified automotive part. RoHS, REACH, lead-free, halogen-free, and conflict-minerals declarations are unknown because no explicit compliance statement is available.