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STMicroelectronics STM32L151QDH6
- Part No.:
- STM32L151QDH6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 132-UFBGA
- Datasheet:
-
STM32L151QDH6.pdf
- Description:
- IC MCU 32BIT 384KB FLSH 132UFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,421
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Product details
Overview
STM32L151QDH6 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M3 microcontroller in LQFP144 package, featuring 384 KB Flash with ECC, 48 KB SRAM, 12 KB true EEPROM, 12-bit ADC (1 Msps, up to 40 channels), and dual 12-bit DACs - deployed in battery-powered medical sensors and portable industrial data loggers requiring sub-µA standby operation.
For engineers reviewing the STM32L151QDH6 datasheet, STM32L151QDH6 pinout, STM32L151QDH6 application, or STM32L151QDH6 equivalent, key selection criteria include verified 305 nA Standby current, 1.35 µA Stop mode + RTC, 11 µA Low-power run mode, and full USB 2.0 interface support with internal 48 MHz PLL - all validated across -40°C to +105°C operation.
Technical Context
The STM32L151QDH6 integrates a 32-bit Arm Cortex-M3 core running at up to 32 MHz with MPU, dynamic voltage scaling, and five low-power modes (Run, Sleep, Low-power Run, Stop, Standby). Its memory subsystem includes dual-bank Flash enabling Read-While-Write (RWW) and ECC protection, plus 12 KB of true EEPROM with wear-leveling support.
Analog resources include three operational amplifiers, two ultra-low-power comparators with window mode and wakeup capability, and a temperature sensor with ±1.5°C accuracy. Clock architecture supports multiple sources: HSE (1–24 MHz), LSE (32.768 kHz), HSI (16 MHz ±1%), LSI (37 kHz), and MSI (65 kHz–4.2 MHz), all feeding a programmable PLL for USB and CPU clock generation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| CPU Core | Arm Cortex-M3, 32-bit, up to 32 MHz - enables deterministic real-time control with 33.3 DMIPS performance and MPU for memory isolation. |
| Flash Memory | 384 KB with ECC and RWW capability - supports firmware updates without halting execution and prevents silent data corruption. |
| SRAM | 48 KB - sufficient for complex RTOS stacks, sensor fusion algorithms, and USB descriptor buffers in embedded applications. |
| EEPROM | 12 KB true EEPROM with ECC - retains calibration data, device IDs, and configuration parameters across power cycles without external NV storage. |
| ADC | 12-bit, 1 Msps, up to 40 channels - captures high-resolution analog signals from multi-sensor arrays while maintaining low power consumption. |
| DAC | 2× 12-bit with output buffers - generates precise analog waveforms for sensor excitation, biasing, or actuator control without external DAC ICs. |
| Low-Power Standby | 305 nA (3 wakeup pins) - extends battery life to years in intermittently active IoT endpoints and wearable health monitors. |
| USB Interface | Full-speed USB 2.0 with integrated 48 MHz PLL - enables direct PC connectivity for firmware updates and data export without external crystal or PHY. |
Pinout & Package
LQFP144 (20 × 20 mm, 0.5 mm pitch) package with 116 fast I/Os (102 5V-tolerant), all mappable to 16 external interrupt vectors. Pin functions include dedicated USB D+/D−, multiple USART/SPI/I²C alternate functions, and LCD segment drivers (not enabled on STM32L151xD variants).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD/VSS | Power supply / Ground | Core and I/O domain supply (1.65–3.6 V); separate VDDA/VSSA required for analog peripherals to ensure ADC/DAC accuracy. |
| PA0–PA15, PB0–PB15, etc. | General-purpose I/O | Configurable as digital input/output, EXTI, or up to 16 alternate functions per port - supports flexible peripheral routing and board layout optimization. |
| PA11/PA12 | USB D+/D− | Dedicated full-speed USB transceiver pins with internal pull-ups; no external resistors needed for standard USB enumeration. |
| PC13–PC15 | LSE oscillator inputs | Connect external 32.768 kHz crystal for RTC operation with ±20 ppm accuracy and automatic calibration support. |
| NRST | Active-low reset | Asynchronous reset input with Schmitt trigger; accepts 100 ns minimum pulse width and supports software-triggered system reset. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power standby | 305 nA with 3 wakeup pins - enables decade-scale battery life in maintenance-free remote monitoring nodes. |
| Memory protection unit (MPU) | Configurable regions with privilege/access control - isolates RTOS tasks and prevents accidental memory overwrites in safety-critical firmware. |
| Capacitive touch sensing | Up to 34 channels with hardware-accelerated acquisition - eliminates need for external touch controller in handheld HMI designs. |
| Embedded CRC unit | Hardware-accelerated 32-bit CRC calculation - ensures integrity of firmware images, EEPROM data, and communication payloads without CPU overhead. |
| Programmable voltage detector (PVD) | 8-level threshold detection on VDD - triggers interrupt or reset before brownout, enabling graceful shutdown of critical peripherals. |
| Flexible static memory controller (FSMC) | Supports SRAM, PSRAM, and NOR Flash with configurable timing - enables direct connection to external displays, FPGA interfaces, or legacy memory-mapped peripherals. |
Applications
| Wearable Health Monitor | Smart Utility Meter |
|---|---|
|
Use Scenario: Continuous ECG/PPG signal acquisition with Bluetooth LE telemetry and multi-year coin-cell operation. IC Role / Device Role / Timing Role: Main MCU managing analog front-end sampling, real-time filtering, secure BLE packetization, and ultra-low-power sleep/wakeup scheduling. Use Value: 305 nA Standby and 1.35 µA Stop+RTC enable >5-year battery life; integrated op-amps and ADC eliminate external signal conditioning components. |
Use Scenario: Tamper-resistant electricity/water meter with pulse counting, LCD display, and periodic RF transmission. IC Role / Device Role / Timing Role: System controller handling metrology calculations, LCD segment driving, RTC-based billing intervals, and secure firmware updates via UART/USB. Use Value: 12 KB EEPROM stores tamper logs and calibration constants with ECC; 102 5V-tolerant I/Os simplify interface to legacy pulse sensors and optical couplers. |
| Industrial Wireless Sensor Node | Portable Diagnostic Tool |
|
Use Scenario: Battery-powered vibration/temperature node transmitting data via LoRaWAN every 15 minutes in harsh factory environments. IC Role / Device Role / Timing Role: Central processor executing sensor fusion, duty-cycled radio control, and environmental compensation algorithms using internal temperature sensor and VREFINT. Use Value: -40°C to +105°C rating ensures reliability near motors/transformers; 11 µA Low-power run mode sustains processing during active sensing bursts. |
Use Scenario: Handheld medical device performing rapid impedance spectroscopy with real-time waveform generation and analysis. IC Role / Device Role / Timing Role: Dual-role controller generating precision AC excitation (via DAC), digitizing response (via ADC), and rendering results on monochrome LCD. Use Value: Integrated 2× DAC + 12-bit ADC + LCD driver reduces BOM count by 4 discrete ICs; USB interface enables field calibration and firmware upgrades. |
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 |
|---|---|---|---|
| STM32L431RCY6 | Higher performance (80 MHz Cortex-M4F), lower standby (150 nA), but only 256 KB Flash and no true EEPROM - uses emulated EEPROM in Flash. | Better for floating-point math and audio processing; less suitable for long-term parameter retention without wear leveling. | Select when DSP capability or lower standby dominates over EEPROM endurance requirements. |
| EFM32PG12B500F1024GL125 | ARM Cortex-M4, 256 KB Flash, 32 KB RAM, 32 KB EEPROM, 1.4 µA Stop mode - lacks USB and integrated LCD driver. | Stronger in energy efficiency per MHz and deep-sleep wake latency; requires external USB PHY and display controller. | Prefer for cost-sensitive, USB-free designs where sub-µA Stop mode and robust RF coexistence are primary. |
Compared with STM32L151QDH6, STM32L431RCY6 trades EEPROM persistence for higher compute throughput and lower standby, while EFM32PG12B500F1024GL125 offers superior deep-sleep efficiency but adds design complexity for USB and display interfaces.
Availability
STM32L151QDH6 is available at Aetrix Electronics and suitable for wearable health monitors, smart utility meters, industrial wireless sensor nodes, and portable diagnostic tools requiring stable component supply across extended product lifecycles.
Supply support for STM32L151QDH6 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 demanding multi-year battery life, robust analog integration, and industrial temperature resilience - optimized for medical, metering, and portable industrial equipment.
FAQ
Does STM32L151QDH6 support USB without an external crystal?
Yes. The STM32L151QDH6 integrates a 48 MHz PLL fed by its internal 16 MHz HSI RC oscillator, enabling full-speed USB 2.0 operation without requiring an external crystal. This reduces BOM cost and PCB area while maintaining USB compliance under specified voltage and temperature conditions.
What is the maximum number of capacitive sensing channels supported?
The STM32L151QDH6 supports up to 34 capacitive sensing channels using its built-in touch sensing controller (TSC). These channels can be configured in various modes including proximity, linear touch, and rotary touch, with hardware-accelerated acquisition and noise immunity features validated per IEC 61000-4-3 testing.
How does the 12 KB EEPROM differ from standard Flash memory?
The 12 KB EEPROM is a dedicated, independently managed memory block with built-in ECC, wear leveling, and byte-level erase/write - unlike Flash, which requires page erasure. It guarantees 400K write/erase cycles and 20-year data retention at 85°C, making it suitable for storing calibration coefficients and device-specific parameters.
Is the LCD driver functional on STM32L151QDH6?
No. The STM32L151QDH6 belongs to the STM32L151xD family, which explicitly excludes the LCD controller per ST's device summary table. Only STM32L152xD variants include the 8×40 segment LCD driver; this part relies on external display interfaces such as SPI or FSMC-connected controllers.
STM32L151QDH6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 132-UFBGA
- 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:
- 109
- 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 40x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L151QDH6 FAQ
1.How can I place an order for STM32L151QDH6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L151QDH6 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 STM32L151QDH6 reliable?
The price and inventory of STM32L151QDH6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L151QDH6 is usually 5 days.
3.What payment methods are accepted for STM32L151QDH6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L151QDH6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L151QDH6?
STM32L151QDH6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L151QDH6 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 STM32L151QDH6?
For technical support, including STM32L151QDH6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L151QDH6 requirements.
6.How does Aetrix verify that STM32L151QDH6 is sourced from the original manufacturer or authorized distributors?
All STM32L151QDH6 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 STM32L151QDH6 meets industry standards.
7.What is the process for return or replacement of STM32L151QDH6?
All STM32L151QDH6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L151QDH6, 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 STM32L151QDH6 part is unused and in its original packaging.
Return procedure for STM32L151QDH6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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