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STMicroelectronics STM32L151V8T6A
- Part No.:
- STM32L151V8T6A
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
STM32L151V8T6A.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:448
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Product details
Overview
STM32L151V8T6A from STMicroelectronics is an ultra-low-power 32-bit ARM® Cortex®-M3 microcontroller featuring 128 KB Flash, 32 KB SRAM, 4 KB EEPROM with ECC, 12-bit ADC (1 Msps, up to 24 channels), and dual 12-bit DACs - deployed in battery-powered medical sensors, portable industrial loggers, and smart utility meters requiring sub-µA standby operation.
For engineers reviewing the STM32L151V8T6A datasheet, STM32L151V8T6A pinout, STM32L151V8T6A application, or STM32L151V8T6A equivalent, key selection criteria include verified ultra-low-power mode current (0.28 µA Standby), integrated USB 2.0 PHY with internal 48 MHz PLL, LCD driver exclusion (per device variant), and LQFP100 package compatibility with 83 fast I/Os (73 tolerant to 5V).
Technical Context
The STM32L151V8T6A implements a 32-bit ARM Cortex-M3 core operating at up to 32 MHz with MPU, supported by five clock sources: HSE (1–24 MHz), LSE (32.768 kHz RTC), HSI (16 MHz ±1%), LSI (37 kHz), and MSI (65 kHz–4.2 MHz). Its power architecture includes dynamic voltage scaling and multiple low-power modes (Stop, Standby, Low-power Run) with <8 µs wakeup latency.
Analog subsystem integration includes two ultra-low-power comparators with window mode and wake-up capability, temperature sensor, VREFINT reference, and dual buffered 12-bit DACs - all functional down to 1.8 V supply. The USB interface uses an internal PLL for 48 MHz clock generation without external crystal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | ARM Cortex-M3, 32-bit, up to 32 MHz - delivers 1.25 DMIPS/MHz for deterministic real-time control in resource-constrained edge nodes. |
| Memory | 128 KB Flash (with ECC), 32 KB SRAM, 4 KB true EEPROM (with ECC) - enables robust firmware storage, data logging, and parameter retention across power cycles. |
| Power Consumption | 0.28 µA Standby (3 wakeup pins), 0.44 µA Stop (16 wakeup lines), 10.9 µA Low-power Run - extends battery life to multi-year operation in coin-cell-powered devices. |
| Analog Peripherals | 12-bit ADC (1 Msps, 24 channels), 2× 12-bit DACs with buffers, 2× ultra-low-power comparators - supports precision sensor signal acquisition and analog output without external components. |
| Communication | 1× USB 2.0 FS (internal 48 MHz PLL), 3× USART, 2× SPI (16 Mbit/s), 2× I²C (SMBus/PMBus) - enables direct PC connectivity, legacy serial interfaces, and multi-sensor I²C buses. |
| Timers & Control | 10 timers: 6× 16-bit general-purpose (up to 4 PWM/IC/OC channels), 2× basic, 2× watchdogs (IWDG + WWDG) - provides flexible timing, motor control, and system safety monitoring. |
| I/O Capability | 83 fast I/Os (73 5V-tolerant), all mappable to 16 external interrupt vectors - simplifies PCB routing and supports mixed-voltage peripheral interfacing. |
Pinout & Package
LQFP100 (14 × 14 mm, 0.5 mm pitch) package with 100 leads; RoHS-compliant, industrial temperature range (–40°C to +105°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDIO2 | Power supply inputs | Dedicated domains for digital core (VDD), analog (VDDA), and I/O bank 2 (VDDIO2) - enable independent noise isolation and voltage scaling. |
| VSS, VSSA | Ground returns | Separate digital (VSS) and analog (VSSA) ground planes minimize coupling noise into sensitive ADC/DAC paths. |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/Os | 83 total GPIOs, 73 5V-tolerant, configurable as alternate functions (USART, SPI, I²C, timers) - support flexible peripheral mapping and hardware reuse. |
| USB_DP / USB_DM | USB 2.0 Full-Speed differential pair | Integrated transceiver with internal pull-ups; requires no external PHY - reduces BOM count and board space for USB-CDC or HID applications. |
| PC13–PC15 | RTC oscillator pins | Support external 32.768 kHz crystal with calibration - enables accurate timekeeping and low-power periodic wake-up for metering or scheduling. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power modes | Standby (0.28 µA), Stop (0.44 µA), Low-power Run (10.9 µA) - validated at 3.0 V/25°C per datasheet Table 24/23; enables >10-year battery life in intermittent-sensing applications. |
| Embedded EEPROM | 4 KB true EEPROM with ECC - retains calibration data, device IDs, or configuration parameters across 100k write/erase cycles with error correction. |
| Capacitive sensing | Up to 20 channels supporting touchkey, linear, and rotary sensors - eliminates need for external touch controller IC in HMI designs. |
| USB with internal PLL | Full-Speed USB 2.0 with on-chip 48 MHz PLL - removes external crystal requirement, reducing cost and layout complexity for firmware updates or data export. |
| Temperature sensor & VREFINT | Calibrated internal temperature sensor (±1.5°C accuracy) and 1.22 V internal reference - enables self-calibration and ambient monitoring without external components. |
Applications
| Wearable Health Monitor | Smart Gas Meter |
|---|---|
Use Scenario: Continuous ECG/PPG signal acquisition with Bluetooth LE offload and daily data sync via USB. IC Role / Device Role / Timing Role: Main system controller managing analog front-end, capacitive touch UI, USB CDC interface, and ultra-low-power sleep/wakeup scheduling. Use Value: 0.28 µA Standby current and <8 µs wakeup enable rapid sensor sampling bursts while preserving multi-month coin-cell battery life. |
Use Scenario: Battery-powered gas meter with pulse counting, pressure/temperature sensing, and bi-directional RF communication. IC Role / Device Role / Timing Role: Primary MCU handling metrology calculations, RTC-based billing intervals, tamper detection via comparator window mode, and secure firmware updates over USB. Use Value: Integrated 4 KB EEPROM stores calibration coefficients and usage logs with ECC protection; dual DACs drive analog test signals for self-diagnostics. |
| Industrial Data Logger | Portable Handheld Tester |
Use Scenario: Ruggedized field instrument recording vibration, humidity, and ambient light over weeks using SD card and Li-SOCl₂ battery. IC Role / Device Role / Timing Role: Central processor executing sensor fusion algorithms, managing FAT32 file writes, and entering Stop mode between 10-second sampling intervals. Use Value: 0.44 µA Stop mode (16 wakeup lines) allows precise trigger-based acquisition from any GPIO or timer event without constant polling overhead. |
Use Scenario: Handheld multimeter with LCD display, analog input multiplexing, and USB-C host connection for PC-based analysis software. IC Role / Device Role / Timing Role: Signal processing unit performing 12-bit ADC conversions, driving segmented display segments (via GPIO emulation), and managing USB HID reports. Use Value: 12-bit ADC with 1 Msps sampling and internal VREFINT enables high-accuracy voltage/current measurements without external reference ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power ARM Cortex-M3 microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32L071KBT6 | Lower memory (128 KB Flash → 128 KB, but only 20 KB SRAM vs. 32 KB); no USB; single 12-bit DAC; 0.33 µA Standby (vs. 0.28 µA) | Lacks integrated USB PHY and second DAC - unsuitable for USB-connected devices or dual analog output requirements. | Select when USB and dual DAC are unnecessary and cost sensitivity outweighs memory headroom. |
| STM32L431RCT6 | Higher performance (80 MHz Cortex-M4F), larger memory (256 KB Flash, 64 KB SRAM), USB OTG FS, but higher active current (88 µA/MHz vs. 185 µA/MHz at same clock) | Includes FPU and enhanced crypto accelerators - better for floating-point math or secure boot, but consumes more energy in low-duty-cycle apps. | Prefer for compute-intensive edge AI inference or TLS stack execution where power budget allows higher active draw. |
Compared with STM32L151V8T6A, STM32L071KBT6 trades USB and memory for lower cost and marginally higher standby current, while STM32L431RCT6 adds FPU and security features at the expense of baseline ultra-low-power efficiency in intermittent operation.
Availability
STM32L151V8T6A is available at Aetrix Electronics and suitable for wearable health monitors, smart utility meters, industrial data loggers, and portable handheld testers requiring stable component supply across extended production lifecycles.
Supply support for STM32L151V8T6A includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, sensors, and automotive-grade components since 1987.
The STM32L1 series targets ultra-low-power embedded applications - optimized for battery-operated devices demanding multi-year runtime, robust memory integrity (ECC), and rich analog integration without external support components.
FAQ
Does STM32L151V8T6A include an integrated LCD controller?
No. The STM32L151V8T6A explicitly excludes the LCD controller, as confirmed in Section 2.1 ("Device overview") and Table 1 of the datasheet (DocID024330 Rev 5, p.11): "LCD Driver (except STM32L151x6/8/B-A devices)". Only STM32L152 variants include the 8×40 segment LCD driver with onboard step-up converter.
What is the maximum allowed VDD voltage for STM32L151V8T6A?
The absolute maximum VDD rating is 3.6 V, with recommended operating range from 1.65 V to 3.6 V per Section 6.2 ("Absolute maximum ratings") and Section 6.3.1 ("General operating conditions"). Operation above 3.6 V risks permanent damage; operation below 1.65 V may cause undefined behavior or reset assertion.
Can STM32L151V8T6A operate USB without an external crystal?
Yes. The device integrates a 48 MHz PLL fed by its internal HSI or MSI oscillators, enabling full-speed USB 2.0 operation without an external 48 MHz crystal. This is documented in Section 3.4 ("Clock management") and Section 3.16.4 ("Universal serial bus"), reducing BOM cost and board area.
How many I/O pins support 5V tolerance on STM32L151V8T6A?
73 of the 83 GPIOs are 5V-tolerant, as specified in the "Features" section (p.1) and Section 3.6 ("GPIOs") of the datasheet. This applies to all I/Os except those in the analog domain (e.g., ADC/DAC pins) and specific debug pins (SWDIO, SWCLK), enabling safe interfacing with 5V peripherals in mixed-voltage systems.
STM32L151V8T6A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 100-LQFP
- Series:
- STM32L1
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M3
- Core Size:
- 32-Bit Single-Core
- Speed:
- 32MHz
- Connectivity:
- I2C, IrDA, LINbus, SPI, UART/USART, USB
- Peripherals:
- Brown-out Detect/Reset, Cap Sense, DMA, I2S, POR, PWM, WDT
- Number of I/O:
- 83
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 32K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 24x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L151V8T6A FAQ
1.How can I place an order for STM32L151V8T6A through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L151V8T6A on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for STM32L151V8T6A reliable?
The price and inventory of STM32L151V8T6A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L151V8T6A is usually 5 days.
3.What payment methods are accepted for STM32L151V8T6A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L151V8T6A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L151V8T6A?
STM32L151V8T6A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L151V8T6A order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for STM32L151V8T6A?
For technical support, including STM32L151V8T6A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L151V8T6A requirements.
6.How does Aetrix verify that STM32L151V8T6A is sourced from the original manufacturer or authorized distributors?
All STM32L151V8T6A products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that STM32L151V8T6A meets industry standards.
7.What is the process for return or replacement of STM32L151V8T6A?
All STM32L151V8T6A units undergo pre-shipment inspection (PSI). If there is an issue with STM32L151V8T6A, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The STM32L151V8T6A part is unused and in its original packaging.
Return procedure for STM32L151V8T6A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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