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STMicroelectronics STM32L151RBH6TR
- Part No.:
- STM32L151RBH6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-TFBGA
- Datasheet:
-
STM32L151RBH6TR.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 64TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,697
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Product details
Overview
STM32L151RBH6TR from STMicroelectronics is an ultra-low-power 32-bit ARM Cortex-M3 microcontroller featuring 128 KB Flash, 16 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-1 µA standby current and <8 µs wake-up.
For engineers reviewing the STM32L151RBH6TR datasheet, STM32L151RBH6TR pinout, STM32L151RBH6TR application, or STM32L151RBH6TR equivalent, key selection criteria include ultra-low-power mode sequencing (Stop/Standby), integrated USB 2.0 PHY with 48 MHz PLL, LCD driver exclusion (per device variant), and 73 I/Os with 5V tolerance - all validated for energy-constrained embedded control.
Technical Context
The STM32L151RBH6TR implements dynamic voltage scaling across five low-power modes (Run, Sleep, Low-power Run, Stop, Standby), with hardware-accelerated power state transitions and dedicated wakeup lines (16 in Stop, 3 in Standby). Its Cortex-M3 core operates from 32 kHz to 32 MHz, delivering 1.25 DMIPS/MHz with MPU support.
Clock architecture integrates six independent sources: HSE (1–24 MHz), LSE (32.768 kHz RTC), HSI (16 MHz ±1%), LSI (37 kHz), MSI (65 kHz–4.2 MHz), and USB PLL (48 MHz output). Analog subsystem includes two ultra-low-power comparators with window mode and wake-up capability, plus temperature sensor and VREFINT calibration.
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 memory protection in safety-critical firmware. |
| Memory | 128 KB Flash (ECC), 16 KB SRAM, 4 KB EEPROM (ECC) - supports robust firmware storage, runtime data buffering, and nonvolatile parameter retention without external components. |
| Power Modes | 0.3 µA Standby (3 wakeup pins), 0.57 µA Stop (16 wakeup lines), 9 µA Low-power Run - extends battery life in multi-year deployments like wireless sensor nodes. |
| Analog Peripherals | 12-bit ADC (1 Msps, 24 channels), 2×12-bit DACs with buffers, 2×ultra-low-power comparators - enables high-resolution sensor acquisition and analog actuation without external signal chain ICs. |
| Communication | 1×USB 2.0 FS, 3×USART (IrDA/ISO7816), 2×SPI (16 Mbit/s), 2×I²C (SMBus/PMBus) - provides direct connectivity to PC hosts, smart cards, displays, and industrial buses. |
| Timers & Control | 6×16-bit general-purpose timers (up to 4 PWM/OC/IC channels each), 2×basic timers, 2×watchdogs (IWDG/WWDG) - supports motor control, PWM lighting, and system-level fault recovery. |
| I/O & Packaging | 73 I/Os (5V tolerant), LQFP64 package (10 × 10 mm) - simplifies PCB layout with mixed-voltage interfacing and standard surface-mount assembly. |
Pinout & Package
LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant, industrial temperature range (–40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual 1.65–3.6 V supply rails with decoupling requirements per datasheet Section 6.1.6 - ensures stable core/peripheral operation under dynamic load. |
| 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 via BOR circuitry. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PE0–PE7 | General-purpose I/Os | 73 total GPIOs, 5V tolerant on most ports - permits direct interfacing with legacy 5V peripherals without level shifters. |
| PA11/PA12 | USB D+/D− | Dedicated full-speed USB 2.0 differential pair with internal transceivers - eliminates need for external PHY and reduces BOM cost. |
| PC13–PC15 | RTC oscillator inputs | Connects to 32.768 kHz crystal; supports automatic calibration - delivers accurate timekeeping in battery-backed applications. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power BOR | 5 selectable thresholds (1.65–2.9 V) - prevents erratic operation during battery voltage sag without external supervisor IC. |
| True EEPROM | 4 KB with ECC and 100k write/erase cycles - stores calibration data, device IDs, or configuration parameters with guaranteed integrity. |
| Capacitive Sensing | 20-channel CSD supporting touchkey/linear/rotary sensors - enables intuitive HMI in handheld devices without dedicated touch controller. |
| DMA Controller | 7-channel peripheral-to-memory/mem-to-mem - offloads CPU during ADC sampling, USB transfers, or SPI bursts to sustain low-power operation. |
| Backup Registers | 80-byte tamper-resistant storage powered by VBAT - retains critical state across power cycles in security-sensitive metering applications. |
Applications
| Portable Medical Sensor | Smart Utility Meter |
|---|---|
Use Scenario: Wearable ECG patch acquiring analog biopotentials and transmitting via BLE (using UART bridge). IC Role / Device Role / Timing Role: Primary MCU handling ADC sampling, digital filtering, USB firmware update interface, and RTC-based data timestamping. Use Value: Sub-1 µA Standby current extends single-CR2032 battery life beyond 2 years; integrated DAC drives reference voltage for precision analog front-end. |
Use Scenario: Battery-backed electricity meter logging consumption every 15 minutes and reporting via NB-IoT modem. IC Role / Device Role / Timing Role: System controller managing EEPROM-stored tariff tables, secure boot, tamper detection, and RTC calendar functions. Use Value: 4 KB EEPROM with ECC ensures regulatory compliance for revenue-grade data retention; 0.9 µA Standby+RTC enables >10-year battery operation. |
| Industrial Handheld Monitor | Wireless Sensor Node |
Use Scenario: Ruggedized field tool measuring temperature, humidity, and pressure with local display and USB configuration. IC Role / Device Role / Timing Role: Central processor running FreeRTOS, driving segmented LCD (via GPIO emulation), and managing dual ADC inputs. Use Value: 73 5V-tolerant I/Os simplify connection to legacy industrial sensors; <8 µs wake-up from Stop mode enables responsive button interaction. |
Use Scenario: LoRaWAN node collecting environmental data (CO₂, VOC) and sleeping between transmissions. IC Role / Device Role / Timing Role: Ultra-low-power host controlling sensor power sequencing, performing ADC conversions, and triggering RF module via GPIO. Use Value: 0.57 µA Stop mode with 16 wakeup lines allows precise event-driven sampling; integrated CRC unit validates sensor data integrity before transmission. |
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 |
|---|---|---|---|
| STM32L431CBU6 | ARM Cortex-M4F core, 256 KB Flash, no EEPROM, higher active current (80 µA/MHz) | Requires external EEPROM for parameter storage; better suited for DSP-intensive tasks (FFT, filtering) | Select when floating-point math or higher clock throughput outweighs EEPROM dependency and lowest standby power. |
| EFM32PG12B500F1024GL125 | ARM Cortex-M4, 1024 KB Flash, 256 KB RAM, 2.5 µA EM4 Deep Sleep, no USB | No native USB interface; relies on external transceiver or UART-to-USB bridge | Choose for extreme low-power sleep-dominated use cases where USB is unnecessary and larger code space is required. |
Compared with STM32L151RBH6TR, STM32L431CBU6 trades EEPROM and ultra-low standby for enhanced compute and DSP capability, while EFM32PG12B500F1024GL125 offers deeper sleep but lacks integrated USB - making STM32L151RBH6TR optimal for USB-connected, EEPROM-dependent, sub-1 µA standby designs.
Availability
STM32L151RBH6TR is available at Aetrix Electronics and suitable for portable medical sensors, smart utility meters, industrial handheld monitors, and wireless sensor nodes requiring stable component supply across long-lifecycle deployments.
Supply support for STM32L151RBH6TR 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 industrial-grade reliability - optimized for metering, healthcare, and IoT edge nodes.
FAQ
Does STM32L151RBH6TR include an integrated USB PHY?
Yes, it integrates a full-speed USB 2.0 PHY with internal 48 MHz PLL, enabling direct USB device connectivity without external transceivers. The PA11/PA12 pins serve as dedicated D+/D− differential pair with ESD protection and impedance matching per USB specification.
What is the maximum operating frequency and associated power consumption in Run mode?
The STM32L151RBH6TR operates up to 32 MHz in Run mode, consuming 214 µA/MHz at 3.3 V and 25°C. At full speed, typical current draw is ~6.85 mA - verified in datasheet Table 17 for code execution from Flash memory.
How does the 4 KB EEPROM differ from standard Flash memory in practice?
This is true EEPROM with byte-level erase/write capability, 100k endurance cycles, and ECC protection - unlike Flash, it requires no page erase before writing and retains data over 20 years at 85°C. It's mapped into the address space at 0x08080000 and accessed via dedicated PEC registers.
Is the LCD driver present in STM32L151RBH6TR?
No, the LCD controller is excluded in STM32L151x6/8/B variants (including RBH6TR) per datasheet Section 2.1 and Table 1. Only STM32L152xx devices integrate the 8×40 segment LCD driver; this part relies on external display interfaces or GPIO-based segment control.
STM32L151RBH6TR 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:
STM32L151RBH6TR FAQ
1.How can I place an order for STM32L151RBH6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L151RBH6TR 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 STM32L151RBH6TR reliable?
The price and inventory of STM32L151RBH6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L151RBH6TR is usually 5 days.
3.What payment methods are accepted for STM32L151RBH6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L151RBH6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L151RBH6TR?
STM32L151RBH6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L151RBH6TR 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 STM32L151RBH6TR?
For technical support, including STM32L151RBH6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L151RBH6TR requirements.
6.How does Aetrix verify that STM32L151RBH6TR is sourced from the original manufacturer or authorized distributors?
All STM32L151RBH6TR 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 STM32L151RBH6TR meets industry standards.
7.What is the process for return or replacement of STM32L151RBH6TR?
All STM32L151RBH6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32L151RBH6TR, 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 STM32L151RBH6TR part is unused and in its original packaging.
Return procedure for STM32L151RBH6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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