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STMicroelectronics STM32L151VCT6TR
- Part No.:
- STM32L151VCT6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
STM32L151VCT6TR.pdf
- Description:
- IC MCU 32BIT 256KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:881
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Product details
Overview
STM32L151VCT6TR from STMicroelectronics is an ultra-low-power 32-bit ARM® Cortex®-M3 microcontroller featuring 256 KB Flash, 32 KB SRAM, and 8 KB true EEPROM with ECC; integrated LCD driver (8×40 segments), dual 12-bit ADC (1 Msps, up to 25 channels), dual 12-bit DAC, two operational amplifiers, and USB 2.0 interface; designed for battery-powered portable medical devices, smart utility meters, and wearable sensors requiring sub-µA standby current and RTC-backed operation.
For engineers reviewing the STM32L151VCT6TR datasheet, STM32L151VCT6TR pinout, STM32L151VCT6TR application, or STM32L151VCT6TR equivalent, key selection criteria include verified 0.29 µA Standby mode (3 wakeup pins), 1.4 µA Stop mode + RTC, 8.6 µA Low-power run mode, 185 µA/MHz Run mode, and full peripheral compatibility across LQFP100 package variants.
Technical Context
The STM32L151VCT6TR implements dynamic voltage scaling (DVS) with three operating ranges (1.65–3.6 V), enabling adaptive power management across Run, Sleep, Low-power Run, Stop, and Standby modes. Its Cortex-M3 core runs at up to 32 MHz with 1.25 DMIPS/MHz performance and includes a memory protection unit (MPU) for secure task isolation.
On-chip clock architecture integrates multiple sources: 1–24 MHz HSE crystal oscillator, 32 kHz LSE for RTC with calibration, 16 MHz HSI RC (±1%), 37 kHz LSI RC, and a multispeed MSI RC (65 kHz–4.2 MHz) feeding a dedicated PLL for USB 48 MHz generation and CPU clock derivation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | ARM Cortex-M3, 32-bit, up to 32 MHz - enables deterministic real-time control with MPU for RTOS partitioning |
| Memory | 256 KB Flash (ECC), 32 KB SRAM, 8 KB EEPROM (ECC) - supports firmware updates, data logging, and parameter retention without external NV memory |
| Power Modes | 0.29 µA Standby (3 wakeup pins), 1.4 µA Stop + RTC - extends battery life in intermittently active sensor nodes beyond 10 years on coin cell |
| Analog Peripherals | 2× 12-bit ADC (1 Msps, 25 ch), 2× 12-bit DAC, 2× op-amps, 2× ultra-low-power comparators - enables closed-loop analog signal conditioning and sensor excitation without external ICs |
| Communication | 1× USB 2.0 FS, 3× USART, up to 8× SPI (2× I2S), 2× I2C - supports simultaneous wired connectivity (USB host/device), wireless co-processor interfacing, and multi-sensor bus aggregation |
| LCD Driver | 8×40 segment LCD controller with contrast adjustment and step-up converter - drives monochrome segment displays directly, eliminating external bias generators |
| Timers | 11 timers including 1× 32-bit, 6× 16-bit GP (4× PWM/IC/OC), 2× basic, 2× watchdogs - supports motor control, PWM dimming, precise timing, and system safety monitoring |
Pinout & Package
LQFP100 (14 × 14 mm, 0.5 mm pitch) package with 83 fast I/Os (70 I/Os 5V tolerant), all mappable to 16 external interrupt vectors; includes dedicated VDDA/VSSA, VREF+, VREF-, and VLCD rails for analog and LCD integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Main power supply and ground | Supports 1.65–3.6 V operation; decoupling required per datasheet Section 6.1.6 for stable low-power mode transitions |
| VDDA, VSSA | Analog domain power and ground | Isolates ADC/DAC/OPAMP noise; must be connected to VDD via ferrite bead or separate LDO for <1 LSB INL error |
| VREF+, VREF- | ADC reference inputs | Enable external precision reference (e.g., 2.5 V) or internal VREFINT (1.22 V); critical for ratiometric sensor accuracy |
| VLCD | LCD segment bias supply | Accepts 2.4–3.3 V input; powers internal step-up converter for segment voltage generation up to 5.5 V |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/Os | 70 pins 5V-tolerant even at 1.8 V VDD; support remappable alternate functions including USB D+/D−, SPI/I2C/USART peripherals |
| NRST | Active-low reset input | Internal pull-up; accepts external push-button or supervisor IC assertion; minimum pulse width 20 ns (Section 6.3.14) |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power BOR | 5 selectable brownout thresholds (1.6–2.8 V) ensure reliable reset during battery sag without external supervisor IC |
| Pre-programmed bootloader | Factory-loaded USB and USART bootloader enables field firmware updates without JTAG/SWD debug hardware |
| DMA controller | 12-channel peripheral-to-memory/memory-to-peripheral DMA reduces CPU load during ADC sampling, USB transfers, and LCD refresh |
| Capacitive sensing | Up to 23 channels with built-in charge transfer and digital filtering - supports touch buttons, sliders, and proximity detection without external components |
| CRC calculation unit | Hardware-accelerated CRC-32 for firmware image validation and communication packet integrity checking in resource-constrained edge nodes |
Applications
| Portable Medical Sensors | Smart Utility Meters |
|---|---|
Use Scenario: Continuous glucose monitor with Bluetooth LE co-processor, ECG front-end, and segmented display. IC Role / Device Role / Timing Role: Primary MCU managing analog acquisition (dual ADC), sensor excitation (DAC/op-amp), LCD refresh (8×40), and USB/USART firmware updates. Use Value: 0.44 µA Stop mode with 16 wakeup lines enables rapid sensor wake-on-event while maintaining 5-year coin-cell lifetime. |
Use Scenario: Battery-backed gas/water meter with pulse counting, temperature compensation, and LCD readout. IC Role / Device Role / Timing Role: System controller handling metrology ADC sampling, RTC-corrected billing intervals, EEPROM-based tariff storage, and LCD segment driving. Use Value: 1.15 µA Standby + RTC ensures accurate timekeeping and tamper-detection logging over 15+ years without mains power. |
| Wearable Health Trackers | Industrial Wireless Sensor Nodes |
Use Scenario: Optical heart-rate monitor using photodiode array, ambient light rejection, and OLED/LCD display. IC Role / Device Role / Timing Role: Signal processor running PPG algorithm, managing LED drivers (via DAC), ADC oversampling, and capacitive touch UI. Use Value: Dual op-amps enable transimpedance amplification and ambient cancellation; 10 nA I/O leakage prevents false touch detection in humid environments. |
Use Scenario: LoRaWAN node measuring vibration, temperature, and humidity in predictive maintenance systems. IC Role / Device Role / Timing Role: Data aggregator acquiring from MEMS accelerometer, thermistor, and capacitive humidity sensor; scheduling periodic RF transmission. Use Value: 8.6 µA Low-power run mode allows continuous sensor polling and digital filtering before deep-sleep, minimizing duty-cycle overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power MCU applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32L431RCT6 | ARM Cortex-M4F core, 210 µA/MHz Run, no LCD driver, 64 KB Flash, 48 KB SRAM | Targets higher-performance sensor fusion (e.g., FFT-based vibration analysis) but lacks integrated display support | Select when floating-point computation or larger RAM is prioritized over LCD and EEPROM retention |
| EFM32GG11B820F2048GQ64 | ARM Cortex-M4, 1.4 µA Deep Sleep, no USB, no LCD, 2048 KB Flash, 512 KB RAM | Suited for energy-harvesting nodes with external display controllers and large local data buffering | Choose for ultra-deep sleep dominance and massive code/data space where USB/LCD are handled externally |
Compared with STM32L151VCT6TR, the STM32L431RCT6 trades LCD/ECC EEPROM for FPU and higher clock efficiency, while the EFM32GG11B820F2048GQ64 sacrifices integrated peripherals for extreme low-power sleep and memory scalability-neither matches the balanced ultra-low-power + display + USB feature set of the L151.
Availability
STM32L151VCT6TR is available at Aetrix Electronics and suitable for portable medical sensors, smart utility meters, wearable health trackers, and industrial wireless sensor nodes requiring stable component supply across long-lifecycle deployments.
Supply support for STM32L151VCT6TR 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 semiconductors since 1987.
The STM32L1 series targets ultra-low-power embedded applications demanding extended battery life, robust analog integration, and certified functional safety features-optimized for metering, healthcare, and IoT edge nodes.
FAQ
What is the maximum operating frequency and core type of the STM32L151VCT6TR?
The STM32L151VCT6TR uses an ARM Cortex-M3 32-bit core with a maximum CPU frequency of 32 MHz. It achieves 1.25 DMIPS/MHz (Dhrystone 2.1) and includes a Memory Protection Unit (MPU) for secure multitasking. The core operates across the full 1.65–3.6 V supply range and supports dynamic voltage scaling to optimize power versus performance.
Does the STM32L151VCT6TR support USB functionality, and what are its requirements?
Yes, it integrates a full-speed USB 2.0 interface with an internal 48 MHz PLL for clock generation. It requires only external D+/D− pull-up/pull-down resistors and standard USB termination; no external crystal is needed for USB operation. The device supports both device and bootloader modes via USB, and the embedded USB transceiver meets full-speed electrical specifications per Section 6.3.51 of the datasheet.
How many analog-to-digital converter (ADC) channels does the STM32L151VCT6TR provide, and what is its resolution and speed?
The STM32L151VCT6TR features a single 12-bit ADC with up to 25 input channels and a maximum sampling rate of 1 Msps. It supports programmable sampling times, injected/conversion sequences, and hardware oversampling. Accuracy is specified at ±1.5 LSB INL and ±1 LSB DNL over temperature, with dedicated VREF+ and VREF− pins for precision ratiometric measurements.
What packaging and pin count does the STM32L151VCT6TR use, and is it RoHS compliant?
The STM32L151VCT6TR is supplied in an LQFP100 package (14 × 14 mm, 0.5 mm pitch) with 100 leads. It is RoHS-compliant and halogen-free per STMicroelectronics' environmental policy (document AN2604). The "TR" suffix indicates tape-and-reel packaging for automated assembly, and the device meets JEDEC J-STD-020 moisture sensitivity level 3 (MSL3).
STM32L151VCT6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 100-LQFP
- Series:
- STM32L1
- Packaging:
- Tape & Reel (TR)
- 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:
- 256KB (256K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 8K x 8
- RAM Size:
- 32K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 25x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L151VCT6TR FAQ
1.How can I place an order for STM32L151VCT6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L151VCT6TR 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 STM32L151VCT6TR reliable?
The price and inventory of STM32L151VCT6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L151VCT6TR is usually 5 days.
3.What payment methods are accepted for STM32L151VCT6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L151VCT6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L151VCT6TR?
STM32L151VCT6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L151VCT6TR 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 STM32L151VCT6TR?
For technical support, including STM32L151VCT6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L151VCT6TR requirements.
6.How does Aetrix verify that STM32L151VCT6TR is sourced from the original manufacturer or authorized distributors?
All STM32L151VCT6TR 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 STM32L151VCT6TR meets industry standards.
7.What is the process for return or replacement of STM32L151VCT6TR?
All STM32L151VCT6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32L151VCT6TR, 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 STM32L151VCT6TR part is unused and in its original packaging.
Return procedure for STM32L151VCT6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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