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STMicroelectronics STM32L151VDT6
- Part No.:
- STM32L151VDT6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 100-LQFP
- Datasheet:
-
STM32L151VDT6.pdf
- Description:
- IC MCU 32BIT 384KB FLASH 100LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:176
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Product details
Overview
STM32L151VDT6 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M3 microcontroller featuring 384 KB Flash with ECC, 48 KB SRAM, 12 KB true EEPROM, USB 2.0 interface, and 12-bit ADC (1 Msps, up to 40 channels). It operates from 1.65 V to 3.6 V across –40°C to +105°C and delivers 33.3 DMIPS at 32 MHz - deployed in battery-powered medical sensors and portable industrial data loggers requiring long-term autonomous operation.
For engineers reviewing the STM32L151VDT6 datasheet, STM32L151VDT6 pinout, STM32L151VDT6 application, or STM32L151VDT6 equivalent, key selection criteria include standby current (305 nA), RTC-enabled Stop mode (1.15 µA), 102 5V-tolerant I/Os, and integrated analog peripherals (2× DAC, 3× op-amps, 2× comparators) enabling single-chip sensor signal conditioning and low-power connectivity.
Technical Context
This MCU implements dynamic voltage scaling and multiple low-power modes (Run, Sleep, Low-power Run, Stop, Standby) with hardware-accelerated power state transitions. Its memory subsystem includes dual-bank Flash (enabling Read-While-Write) and ECC-protected EEPROM for robust firmware and parameter storage in harsh environments.
The analog front-end integrates a 12-bit ADC with up to 40 input channels, two buffered 12-bit DACs, three rail-to-rail operational amplifiers, and two ultra-low-power comparators - all functional down to 1.8 V supply, supporting precision sensor interfacing without external signal chain components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm® Cortex®-M3, 32-bit, up to 32 MHz - enables deterministic real-time control and Dhrystone 2.1 performance of 33.3 DMIPS. |
| Memory | 384 KB Flash (dual-bank, ECC), 48 KB SRAM, 12 KB EEPROM (ECC) - supports firmware updates with RWW capability and nonvolatile parameter retention over 100k cycles. |
| Power Consumption | 305 nA Standby (3 wakeup pins), 1.15 µA Stop + RTC - extends coin-cell battery life to >10 years in periodic wake-up sensing applications. |
| Analog Peripherals | 12-bit ADC (1 Msps, 40 ch), 2× 12-bit DAC (buffered), 3× op-amps, 2× comparators - enables full-signal-chain integration for sensor nodes without external ICs. |
| Communication | 1× USB 2.0 FS, 5× USART, up to 8× SPI (incl. 2× I2S), 2× I2C, 1× SDIO - provides flexible wired/wireless host interfacing and memory expansion. |
| I/O & Timers | 102 5V-tolerant GPIOs, 11 timers (incl. 1× 32-bit, 6× 16-bit advanced, 2× watchdogs) - supports complex peripheral multiplexing and precise timing-critical tasks. |
| Operating Range | 1.65 V to 3.6 V supply, –40°C to +105°C ambient - certified for industrial and extended-temperature embedded deployments. |
Pinout & Package
LQFP100 (14 × 14 mm, 0.5 mm pitch) package with 100 leads; 102 fast I/Os (100 accessible in LQFP100) mappable to 16 external interrupt vectors and supporting 5V tolerance on most pins.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Core & I/O power supply / ground | Dual-domain supply pins: VDD powers core/SRAM/Flash; separate VDDA for analog domain ensures clean ADC/DAC reference. |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/O | 102 total GPIOs; 100 available in LQFP100; majority 5V-tolerant - simplifies level-shifting in mixed-voltage systems. |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; accepts 1.65–3.6 V logic - enables reliable cold-start and brownout recovery. |
| USB_DP / USB_DM | USB 2.0 Full-Speed differential pair | Integrated transceiver with internal 1.5 kΩ pull-up on DP - eliminates external USB resistor network. |
| OSC_IN / OSC_OUT | External crystal oscillator inputs | Supports 1–24 MHz crystals; dedicated 32 kHz LSE input for RTC calibration - enables high-accuracy timekeeping with ±20 ppm stability. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power architecture | 305 nA Standby, 0.475 µA Stop mode - reduces energy per wakeup cycle for event-driven IoT edge nodes. |
| Memory with ECC | 384 KB Flash + 12 KB EEPROM both with error-correcting code - prevents silent corruption in safety-critical firmware and calibration data. |
| Integrated analog subsystem | 12-bit ADC (40 ch), 2× DAC, 3× op-amps, 2× comparators - replaces 4–5 discrete analog ICs in sensor front-end designs. |
| Hardware crypto acceleration | CRC calculation unit + 96-bit unique ID - enables secure firmware signature verification and device identity binding. |
| Flexible clock system | Multiple internal RC oscillators (HSI, LSI, MSI), PLL for USB, and calibrated 32 kHz LSE - eliminates need for external clock sources in most configurations. |
Applications
| Portable Medical Sensor | Smart Utility Meter |
|---|---|
|
Use Scenario: Wearable ECG patch acquiring biopotential signals continuously for 7+ days on a CR2032 battery. IC Role / Device Role / Timing Role: Main controller handling analog acquisition (ADC + op-amps), digital filtering, BLE packetization, and ultra-low-power sleep scheduling. Use Value: 305 nA Standby and 1.15 µA Stop+RTC enable multi-year battery life while maintaining accurate time-stamped measurements. |
Use Scenario: Battery-backed water/gas meter logging consumption every 15 minutes and transmitting via NB-IoT. IC Role / Device Role / Timing Role: System-on-chip managing pulse counting, LCD display, RTC-based scheduling, and secure firmware updates over cellular link. Use Value: Integrated 12 KB EEPROM retains billing history and calibration data across power loss; USB enables field reprogramming without JTAG hardware. |
| Industrial Data Logger | Asset Tracking Beacon |
|
Use Scenario: Ruggedized environmental logger recording temperature, humidity, and vibration in remote locations for 2+ years. IC Role / Device Role / Timing Role: Central processor interfacing with multiple sensors via I2C/SPI, storing raw data in internal EEPROM, and waking periodically for LoRaWAN transmission. Use Value: Dual-bank Flash allows seamless firmware updates during operation; 102 5V-tolerant I/Os simplify connection to legacy industrial sensors. |
Use Scenario: GPS-disabled indoor asset tag using RSSI triangulation and motion-triggered BLE advertising. IC Role / Device Role / Timing Role: Ultra-low-power coordinator managing accelerometer wake events, BLE stack, and encrypted location beacon payload generation. Use Value: 8 µs wakeup time from Stop mode ensures immediate response to movement; integrated op-amps condition piezoelectric shock sensor output directly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low-power microcontroller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| STM32L431RCT6 | Higher performance (80 MHz Cortex-M4F, FPU), lower active current (80 µA/MHz), but no true EEPROM and only 16 KB SRAM. | Better for floating-point math (motor control), less suitable for long-term parameter retention without external FRAM/NVSRAM. | Select when computational throughput outweighs EEPROM dependency and battery life is secondary to feature density. |
| EFM32PG12B500F1024GL125 | ARM Cortex-M4, 2.5 µA Stop mode, integrated DC-DC converter, but no USB and limited analog (1× DAC, no op-amps). | Superior for sub-µA always-on sensing; lacks USB and rich analog - requires external signal conditioning for sensor fusion. | Prefer for pure ultra-low-power sensor hubs where USB connectivity and analog integration are not required. |
Compared with STM32L151VDT6, STM32L431RCT6 trades EEPROM and analog richness for higher CPU performance and FPU, while EFM32PG12B500F1024GL125 achieves deeper sleep but sacrifices USB and on-chip signal conditioning - making STM32L151VDT6 optimal for balanced, self-contained low-power measurement systems.
Availability
STM32L151VDT6 is available at Aetrix Electronics and suitable for portable medical sensors, smart utility meters, industrial data loggers, and asset tracking beacons requiring stable component supply across extended product lifecycles.
Supply support for STM32L151VDT6 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, MEMS, and automotive semiconductors.
The STM32L1 series targets ultra-low-power embedded applications demanding extended battery life, robust memory integrity, and integrated analog functionality - optimized for wearables, metering, and environmental monitoring.
FAQ
Does STM32L151VDT6 support USB device mode without external components?
Yes. STM32L151VDT6 integrates a full-speed USB 2.0 transceiver with an internal 1.5 kΩ pull-up resistor on the USB_DP line. No external PHY or pull-up resistor is required for basic USB device operation, reducing BOM count and PCB area in portable designs.
What is the maximum number of ADC channels usable simultaneously in continuous conversion mode?
The 12-bit ADC supports up to 40 input channels, but only 16 can be configured in a single regular sequence. Simultaneous sampling across multiple channels is not supported; however, scan mode enables rapid sequential conversion at up to 1 Msps, achieving effective multi-channel acquisition within <16 µs per channel.
How does the 12 KB EEPROM differ from standard Flash in terms of endurance and access?
The 12 KB true EEPROM is organized as byte-erasable, supporting 100,000 write/erase cycles and 20-year data retention at 85°C. Unlike Flash, it permits single-byte writes without page erasure, enabling efficient logging of infrequent parameter changes - critical for calibration storage and usage counters.
Can the integrated op-amps drive standard audio codecs or external ADC references?
Each of the three rail-to-rail op-amps supports rail-to-rail output swing and 12 mA output current. They are qualified for driving 600 Ω loads and can buffer external ADC references or condition microphone/ECG signals directly - verified per datasheet Table 6.3.21, with gain-bandwidth product ≥1.3 MHz at 3.3 V.
STM32L151VDT6 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:
- 384KB (384K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 12K x 8
- RAM Size:
- 48K 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:
STM32L151VDT6 FAQ
1.How can I place an order for STM32L151VDT6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L151VDT6 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 STM32L151VDT6 reliable?
The price and inventory of STM32L151VDT6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L151VDT6 is usually 5 days.
3.What payment methods are accepted for STM32L151VDT6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L151VDT6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L151VDT6?
STM32L151VDT6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L151VDT6 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 STM32L151VDT6?
For technical support, including STM32L151VDT6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L151VDT6 requirements.
6.How does Aetrix verify that STM32L151VDT6 is sourced from the original manufacturer or authorized distributors?
All STM32L151VDT6 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 STM32L151VDT6 meets industry standards.
7.What is the process for return or replacement of STM32L151VDT6?
All STM32L151VDT6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L151VDT6, 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 STM32L151VDT6 part is unused and in its original packaging.
Return procedure for STM32L151VDT6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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