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STMicroelectronics STM32L151RBH6TTR
- Part No.:
- STM32L151RBH6TTR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-TFBGA
- Datasheet:
-
STM32L151RBH6TTR.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 64TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,022
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Product details
Overview
STM32L151RBH6TTR 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, 24 channels), and dual 12-bit DACs - deployed in battery-powered medical sensors, portable industrial monitors, and smart utility meters requiring sub-µA standby operation.
For engineers reviewing the STM32L151RBH6TTR datasheet, STM32L151RBH6TTR pinout, STM32L151RBH6TTR application, or STM32L151RBH6TTR equivalent, key selection criteria include verified 0.28 µA Standby current, USB 2.0 full-speed interface with internal 48 MHz PLL, LCD driver exclusion (per device variant), and 73 5V-tolerant I/Os supporting capacitive touch sensing.
Technical Context
The STM32L151RBH6TTR integrates a Cortex-M3 core running up to 32 MHz with MPU, dynamic voltage scaling, and five low-power modes - including Stop mode (0.44 µA) and Standby mode (0.28 µA) - all enabled by dedicated power management peripherals: BOR with 5 thresholds, PVD, and ultra-low-leakage (10 nA) I/Os.
Its analog subsystem includes two ultra-low-power comparators with wake-up capability, temperature sensor, VREFINT reference, and dual buffered 12-bit DACs - while digital connectivity comprises 3x USART (with IrDA/ISO 7816), 2x SPI (16 Mbit/s), 2x I²C (SMBus/PMBus), and USB 2.0 FS with crystal-less operation support via internal PLL.
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 (ECC-enabled), 32 KB SRAM, 4 KB true EEPROM (ECC) - ensures data integrity in long-life deployments without external NVM. |
| Power Consumption | 0.28 µA Standby (3 wakeup pins), 0.44 µA Stop (16 wakeup lines), 10.9 µA Low-power Run - enables >10-year battery life in coin-cell-powered devices. |
| Analog Peripherals | 12-bit ADC (1 Msps, 24 channels), 2×12-bit DAC (buffered), 2×ultra-low-power comparators - supports precision sensor signal chain without external signal conditioning. |
| Digital Interfaces | USB 2.0 FS (48 MHz PLL), 3×USART, 2×SPI (16 Mbit/s), 2×I²C (SMBus/PMBus) - enables direct connectivity to PC, displays, sensors, and power ICs. |
| I/O & Timing | 73 I/Os (5V tolerant), 10 timers (6x16-bit advanced, 2x basic, 2x watchdog), CRC unit, 96-bit UID - provides flexible peripheral routing and secure firmware identification. |
| Operating Range | 1.65 V to 3.6 V supply, -40°C to +105°C ambient - certified for industrial and extended-temperature embedded applications. |
Pinout & Package
LQFP64 package (10 × 10 mm, 0.5 mm pitch), 64-pin quad flat lead frame with exposed thermal pad - optimized for manual rework, thermal dissipation in compact PCB layouts, and compatibility with standard SMT assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Core & I/O power supply / ground | Dual power domains enable independent regulation of analog/digital sections; 10 nA I/O leakage preserves battery runtime during deep sleep. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PH0–PH1 | General-purpose I/Os | 73 total GPIOs (5V tolerant), all mappable to 16 EXTI lines - supports flexible peripheral remapping and robust ESD-hardened signal routing. |
| PA1, PA2, PA3, PA4, PA5, PA6, PA7, PB0, PB1, PB10, PB11, PC0–PC5, PC10, PC11, PC13, PC14, PC15 | ADC input channels | Up to 24 single-ended ADC inputs across multiple ports - allows simultaneous multi-sensor acquisition (e.g., temp, voltage, current) with hardware oversampling. |
| PA4, PA5 | DAC outputs | Two buffered 12-bit DAC outputs (DAC1/DAC2) - drive analog actuators, bias circuits, or calibration references without external op-amps. |
| PA11, PA12 | USB D+/D− | Dedicated full-speed USB 2.0 transceiver pins with internal pull-ups - eliminates external PHY and reduces BOM cost in host-peripheral designs. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power architecture | 0.28 µA Standby + RTC, <8 µs wake-up time - enables rapid response to sensor events while minimizing average system power. |
| Embedded EEPROM with ECC | 4 KB true EEPROM (not emulated), error-correcting code protection - guarantees 100k write cycles and 20-year data retention in field-deployed firmware. |
| Capacitive touch sensing | 20-channel CTSU supporting touchkey, linear, and rotary sensors - replaces mechanical buttons with low-cost, sealed front-panel interfaces. |
| Internal clock sources | HSI (16 MHz ±1%), LSI (37 kHz), MSI (65 kHz–4.2 MHz), LSE (32.768 kHz) - eliminates external crystals in cost-sensitive designs while maintaining RTC accuracy. |
| USB crystal-less operation | Internal 48 MHz PLL synchronized to USB SOF packets - removes 12 MHz crystal and matching capacitors, reducing component count and board area. |
Applications
| Portable Medical Sensor | Smart Utility Meter |
|---|---|
Use Scenario: Wearable ECG patch continuously monitoring heart rate and rhythm using dry electrodes and Bluetooth LE gateway. IC Role / Device Role / Timing Role: Primary MCU managing analog front-end (ADC, DAC, comparators), real-time signal processing, USB-based firmware updates, and ultra-low-power sleep scheduling. Use Value: 0.44 µA Stop mode extends CR2032 battery life beyond 2 years; integrated EEPROM stores calibration coefficients and patient history securely. |
Use Scenario: Battery-backed electricity meter logging voltage, current, and energy consumption every 15 minutes over 10+ years. IC Role / Device Role / Timing Role: System controller handling metrology ADC sampling, RTC-based timestamping, tamper detection, and secure data storage in EEPROM. Use Value: 0.28 µA Standby mode with RTC ensures accurate timekeeping and wake-up on demand; 105°C rating supports outdoor enclosure deployment. |
| Industrial Handheld Terminal | Wireless Sensor Node |
Use Scenario: Ruggedized barcode scanner with capacitive touch UI, OLED display, and LoRaWAN backhaul in factory environments. IC Role / Device Role / Timing Role: Main processor executing touch sensing, display refresh, serial communication with scan engine, and low-power radio coexistence management. Use Value: 73 5V-tolerant I/Os simplify interface to legacy peripherals; built-in CRC unit accelerates secure OTA update verification. |
Use Scenario: Soil moisture and temperature node powered by solar harvester, transmitting data hourly via NB-IoT. IC Role / Device Role / Timing Role: Energy-aware controller coordinating sensor readout (ADC), RF transmission timing, and adaptive sleep cycling based on light conditions. Use Value: 10.9 µA Low-power Run mode minimizes active-phase power draw; internal temperature sensor enables self-calibration without external components. |
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 |
|---|---|---|---|
| STM32L071RBT6 | Lower memory (128 KB Flash → 192 KB, but only 20 KB SRAM vs. 32 KB); no USB; single 12-bit DAC; 0.33 µA Standby | Targeted at simpler sensor nodes without USB or high-resolution analog output needs | Select when USB and dual DAC are unnecessary and cost sensitivity outweighs memory headroom. |
| STM32L431RBT6 | Cortex-M4F core (DSP/FPU), 200 µA/MHz Run, 0.02 µA Standby (with RTC), no EEPROM, higher voltage min (1.71 V) | Better for floating-point math (e.g., FFT-based vibration analysis) but requires tighter supply regulation | Choose for compute-intensive edge analytics where ultra-low standby is secondary to processing throughput. |
Compared with STM32L151RBH6TTR, STM32L071RBT6 trades USB and dual DAC for lower cost and marginally higher standby current, while STM32L431RBT6 upgrades to Cortex-M4F and lower standby but sacrifices EEPROM and USB crystal-less operation - making STM32L151RBH6TTR optimal for balanced analog-rich, USB-connected, long-life applications.
Availability
STM32L151RBH6TTR is available at Aetrix Electronics and suitable for portable medical sensors, smart utility meters, industrial handheld terminals, and wireless sensor nodes requiring stable component supply across multi-year production cycles.
Supply support for STM32L151RBH6TTR 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 ICs, sensors, and automotive semiconductors since 1987.
The STM32L1 series targets ultra-low-power embedded applications demanding extended battery life, robust analog integration, and industrial-grade reliability - with the STM32L151RBH6TTR specifically optimized for cost-sensitive, mixed-signal IoT endpoints.
FAQ
Does STM32L151RBH6TTR include an LCD controller?
No. The STM32L151RBH6TTR explicitly excludes the LCD driver - per ST's device summary table and datasheet Section 3.9, LCD functionality is reserved for STM32L152x6/8/B-A variants only. This simplifies layout and reduces power in non-display applications.
What is the maximum operating frequency and associated power efficiency?
The STM32L151RBH6TTR runs at up to 32 MHz with 185 µA/MHz in Run mode (measured at 3.3 V, 25°C). Its dynamic voltage scaling allows lower frequencies (e.g., 16 MHz) to reduce current proportionally, enabling precise trade-offs between performance and battery life.
How many I/O pins support external interrupt capability?
All 73 GPIOs are individually configurable for external interrupt generation via 16 dedicated EXTI lines - with each EXTI line capable of serving multiple pins through software-selectable mapping, enabling flexible wake-up source configuration across multiple ports.
Is the internal 4 KB EEPROM truly persistent and ECC-protected?
Yes. The 4 KB EEPROM is implemented in dedicated silicon (not Flash emulation), rated for 100,000 write/erase cycles and 20-year data retention at 55°C. ECC logic detects and corrects single-bit errors automatically during read/write operations, ensuring data integrity without firmware overhead.
STM32L151RBH6TTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-TFBGA
- 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:
- 51
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 4K x 8
- RAM Size:
- 16K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 20x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L151RBH6TTR FAQ
1.How can I place an order for STM32L151RBH6TTR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L151RBH6TTR 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 STM32L151RBH6TTR reliable?
The price and inventory of STM32L151RBH6TTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L151RBH6TTR is usually 5 days.
3.What payment methods are accepted for STM32L151RBH6TTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L151RBH6TTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L151RBH6TTR?
STM32L151RBH6TTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L151RBH6TTR 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 STM32L151RBH6TTR?
For technical support, including STM32L151RBH6TTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L151RBH6TTR requirements.
6.How does Aetrix verify that STM32L151RBH6TTR is sourced from the original manufacturer or authorized distributors?
All STM32L151RBH6TTR 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 STM32L151RBH6TTR meets industry standards.
7.What is the process for return or replacement of STM32L151RBH6TTR?
All STM32L151RBH6TTR units undergo pre-shipment inspection (PSI). If there is an issue with STM32L151RBH6TTR, 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 STM32L151RBH6TTR part is unused and in its original packaging.
Return procedure for STM32L151RBH6TTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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