STM32L151VBT6 - 32MHz Cortex-M3 128KB MCU | STMicroelectronics
MPN: STM32L151VBT6 ✓ NakahandaSTM32L151VBT6 Ulas
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.
Mga alternatibo na pwedeng ilagay na STM32L151VBT6 — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
Variante sa Seri na ito
Katulad na modelo sa serye na katugma sa pagpasok STM32L151VBT6 (parehas na form factor at footprint) — pagkakaiba sa Flash Memory, Package, SRAM, ADC Resolution, DAC Resolution.
STM32L151VBT6A
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
STM32L152VBT6A
✅ Drop-In📋 Alternatibo na Reference (hindi sa katalogo)
STM32L151VCT6
✅ Drop-In ⚠️ Mga Talaan Hindi NaiwerikmoMagkontak para sa presyo
Tingnan ang Datasheet →STM32L152VCT6
✅ Drop-In ⚠️ Mga Talaan Hindi Naiwerikmo📋 Alternatibo na Reference (hindi sa katalogo)
STM32L151VET6
✅ Drop-In ⚠️ Mga Talaan Hindi Naiwerikmo📋 Alternatibo na Reference (hindi sa katalogo)
STM32L151VBT6 Mga Pinakamataas na Rating at Electrical Characteristics
| 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 |
| Volte ng Pagbibigay | 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 |
| Packhaging | 100-pin LQFP, 14 x 14 mm |
| Uri ng Pagpapasok | Surface mount |
Gabay sa Pin Configuration ng STM32L151VBT6 100-pin lqfp, 14 x 14 mm
Pin configuration para sa STM32L151VBT6 (100-pin lqfp, 14 x 14 mm package). Kasama sa digital IC na ito ang GPIO, mga communication interface (UART, SPI, I2C), at mga power pin. Sumangguni sa datasheet ng manufacturer para sa mga alternatibong function ng pin at mga opsyon sa configuration. Mahalaga para sa disenyo ng embedded system at PCB layout.
Wala ng detalyadong pinout data na magagamit para sa STM32L151VBT6.
Sumangguni sa datasheet para sa buong pin configuration.
Tipikal na mga Gamit
STM32L151VBT6 ay nararapat para sa 6 aplikasyons: 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.
Inirekomenda
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.
Inirekomenda
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.
Inirekomenda
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.
Inirekomenda
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.
Inirekomenda
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.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for STM32L151VBT6 — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto | 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 |
Pangunahing mga Pagkakaiba
- Balanced 128 KB Flash and 16 KB SRAM configuration (kumpara saSTM32L151VET6)
- Lower SRAM requirement with the same 32 MHz processing core (kumpara saSTM32L152VBT6A)
- Lower Flash option for power-constrained embedded control (kumpara saSTM32L151VCT6)
Talaan ng Disenyo
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.
Impormasyon ng Pagsunod sa Kautusan
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.