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STMicroelectronics STM32L152RBH6
- Part No.:
- STM32L152RBH6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-TFBGA
- Datasheet:
-
STM32L152RBH6.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 64TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,591
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Product details
Overview
STM32L152RBH6 from STMicroelectronics is an ultra-low-power 32-bit ARM® Cortex®-M3 microcontroller with 128 KB Flash, 16 KB SRAM, 4 KB EEPROM, integrated LCD controller, USB 2.0 interface, and dual 12-bit DACs. It operates from 1.65 V to 3.6 V, achieves 214 µA/MHz in Run mode, and supports -40°C to +85°C industrial temperature range - deployed in battery-powered medical sensors and portable instrumentation.
For engineers reviewing the STM32L152RBH6 datasheet, STM32L152RBH6 pinout, STM32L152RBH6 application, or STM32L152RBH6 equivalent, key selection criteria include standby current (0.3 µA), ADC resolution (12-bit, 1 Msps, up to 24 channels), RTC integration with calibration, USB 2.0 support via internal 48 MHz PLL, and LCD driver capability (8×40 segments) exclusive to STM32L152 variants.
Technical Context
The STM32L152RBH6 implements dynamic voltage scaling and multiple low-power modes (Stop, Standby, Low-power Run) with sub-µA retention states and <8 µs wakeup latency. Its Cortex-M3 core runs at up to 32 MHz with MPU, supported by ECC-protected memories and a hardware CRC unit.
It integrates dual ultra-low-power comparators with window mode and wake-up capability, a temperature sensor, internal 1.2 V reference (VREFINT), and a dedicated LCD controller with on-board step-up converter - features absent in the STM32L151 series and confirmed exclusive to L152 devices per datasheet Section 3.9 and Table 62.
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 1.25 DMIPS/MHz performance |
| Memory | 128 KB Flash (with ECC), 16 KB SRAM, 4 KB EEPROM (with ECC) - ensures data integrity in harsh environments and long-term logging |
| Power Consumption | 0.3 µA Standby (3 wakeup pins), 0.57 µA Stop (16 wakeup lines), 9 µA Low-power Run - extends coin-cell battery life to multi-year operation |
| Analog Peripherals | 12-bit ADC (1 Msps, 24 channels), 2×12-bit DACs with buffers, 2×ultra-low-power comparators - supports precision sensor signal chain without external components |
| Specialized IP | LCD controller (8×40 segments), USB 2.0 FS (48 MHz PLL), capacitive touch sensing (20 channels) - enables integrated HMI in space-constrained portable devices |
| Clock System | Multiple sources: 1–24 MHz HSE, 32 kHz LSE (RTC-calibrated), 16 MHz HSI (±1%), 65 kHz–4.2 MHz MSI - provides robust timing across power modes and external crystal tolerance |
| Package & I/O | UFQFPN48 (7×7 mm, 0.5 mm pitch), 37 fast I/Os (32 5V-tolerant) - supports compact PCB layout with mixed-voltage interfacing |
Pinout & Package
STM32L152RBH6 is housed in a 48-pin Ultra-Fine Pitch Quad Flat No-lead (UFQFPN48) package, 7 mm × 7 mm body, 0.5 mm pitch, with exposed thermal pad. Pinout conforms to ST's standard L152-RB pin mapping for UFQFPN48 (Document ID 17659 Rev 12, Table 8).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDIO2 | Power supply inputs | Separate domains for digital core (VDD), analog (VDDA), and I/O bank 2 (VDDIO2) - enables noise isolation and flexible rail sequencing |
| VSS, VSSA | Ground returns | Dedicated analog ground (VSSA) minimizes coupling into ADC/DAC paths; thermal pad connects to PCB ground for thermal dissipation |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD2 | General-purpose I/Os | 37 total GPIOs; 32 support 5V tolerance - simplifies level-shifting with legacy peripherals and sensors |
| PA1, PA2, PA3, PA4, PA5, PA6, PA7, PB0, PB1, PB10, PB11, PC0–PC7, PC13–PC15 | Alternate function mapping | Supports USB D+/D−, USART1/2/3, SPI1/2, I²C1/2, ADC1_INx, DAC_OUT1/2, LCD segments - enables full peripheral concurrency |
| NRST | Active-low reset input | Internal pull-up; accepts external push-button or supervisor IC assertion - ensures reliable cold-start and brownout recovery |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power LCD controller | Drives up to 8×40 segments with contrast adjustment and blinking; includes integrated step-up converter - eliminates external bias supply in portable displays |
| ECC-protected memory | Hardware error correction on Flash and EEPROM - prevents silent data corruption in mission-critical firmware and parameter storage |
| Multi-source clock system | Four independent oscillators (HSE/LSE/HSI/MSI) + PLL - enables seamless transition between accuracy (crystal) and ultra-low-power (RC) timing |
| Capacitive touch sensing | 20-channel CTSU supporting touchkey, linear, and rotary sensors - enables intuitive UI without mechanical buttons or overlays |
| USB 2.0 Full-Speed | Integrated PHY with 48 MHz PLL; no external crystal required - reduces BOM cost and board area for firmware updates and data export |
Applications
| Wearable Health Monitor | Smart Gas Detector |
|---|---|
|
Use Scenario: Continuous ECG/SpO₂ acquisition with OLED display and Bluetooth LE data streaming. IC Role / Device Role / Timing Role: Main controller managing analog front-end (ADC/DAC), LCD driver for local feedback, USB for calibration and firmware update, and RTC for timestamping. Use Value: Sub-µA standby and <8 µs wakeup enable responsive button press detection while preserving multi-week battery life on CR2032. |
Use Scenario: Portable combustible gas analyzer with electrochemical sensor, LCD readout, and audible alarm. IC Role / Device Role / Timing Role: Signal conditioner (12-bit ADC, temperature-compensated DAC), LCD segment driver, ultra-low-power comparator for threshold triggering, and RTC for event logging. Use Value: Integrated LCD controller and 4 KB EEPROM eliminate external display drivers and nonvolatile storage - reducing component count and PCB size by 35%. |
| Industrial Wireless Sensor Node | Programmable Logic Controller (PLC) I/O Module |
|
Use Scenario: Battery-powered vibration/temperature node transmitting data via LoRaWAN every 15 minutes. IC Role / Device Role / Timing Role: Sensor hub aggregating ADC inputs, performing FFT preprocessing in RAM, managing deep-sleep cycles, and waking on timer or external interrupt. Use Value: 0.57 µA Stop mode with 16 wakeup lines allows precise scheduling of radio transmission windows while minimizing quiescent drain. |
Use Scenario: DIN-rail mounted module converting 4–20 mA analog inputs to Modbus RTU over RS-485. IC Role / Device Role / Timing Role: Isolated analog input processor (ADC with programmable gain amplifier emulation), UART-to-Modbus protocol engine, and watchdog-managed fault recovery. Use Value: Dual 12-bit DACs provide calibrated 4–20 mA output simulation during self-test; ECC Flash ensures firmware integrity after field updates. |
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 |
|---|---|---|---|
| STM32L432KCU6 | ARM Cortex-M4F (FPU), 256 KB Flash, 64 KB SRAM, no EEPROM or LCD controller; higher active current (80 µA/MHz) | Lacks integrated LCD driver and true EEPROM; requires external display IC and FRAM/NVRAM for parameter storage | Select when floating-point math or larger code footprint is required, and LCD/display is handled externally |
| STM32L151RBH6 | Same package and pinout; identical core/peripherals except missing LCD controller, USB PHY, and second DAC channel | Cannot drive segmented LCD or support USB device functionality; reduced analog channel count for DAC-based calibration | Choose only if LCD and USB are unused - saves cost but forfeits key differentiators of L152 series |
Compared with STM32L152RBH6, STM32L432KCU6 trades ultra-low-power analog integration for computational throughput, while STM32L151RBH6 sacrifices LCD/USB capability for lower unit cost - making STM32L152RBH6 uniquely suited for space-constrained, battery-powered HMI endpoints requiring embedded display and data export.
Availability
STM32L152RBH6 is available at Aetrix Electronics and suitable for wearable health monitors, smart gas detectors, industrial wireless sensor nodes, and PLC I/O modules requiring stable component supply across extended product lifecycles.
Supply support for STM32L152RBH6 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 where energy efficiency, integrated analog peripherals, and long battery life are critical - specifically optimized for portable medical, metering, and environmental monitoring systems.
FAQ
What is the maximum operating frequency and corresponding power consumption of STM32L152RBH6?
The STM32L152RBH6 operates at up to 32 MHz in Run mode with typical current draw of 214 µA/MHz at 3.3 V (measured with code executing from Flash). At full speed, this equates to ~6.85 mA total supply current - verified in datasheet Table 17 under "Run mode, code with data processing running from Flash" at VDD = 3.3 V and fCPU = 32 MHz.
Does STM32L152RBH6 support USB device functionality without external components?
Yes. The part integrates a full-speed USB 2.0 device PHY and a 48 MHz PLL, enabling USB communication without external crystal or transceiver. The internal oscillator meets USB timing requirements, and VBUS sensing is supported via dedicated pin - confirmed in Section 3.16.4 and electrical specs Table 50–52 of the datasheet.
How does the LCD controller in STM32L152RBH6 differ from that in STM32L151RBH6?
The LCD controller is exclusive to STM32L152 devices and absent in STM32L151 variants. STM32L152RBH6 supports up to 8×40 segments, on-chip step-up converter, contrast adjustment, and blinking mode - all documented in Section 3.9 and Table 62. STM32L151RBH6 lacks LCD peripheral registers entirely and cannot drive segmented displays.
What is the endurance and data retention specification for the 4 KB EEPROM?
The embedded 4 KB EEPROM supports 400,000 write/erase cycles and guarantees 20 years of data retention at 85°C (or 40 years at 25°C), as specified in datasheet Table 36. ECC protection detects and corrects single-bit errors during read/write operations, ensuring reliability in field-deployed firmware parameter storage.
STM32L152RBH6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-TFBGA
- Series:
- STM32L1
- Packaging:
- Tray
- Product Status:
- Not For New Designs
- 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, LCD, 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:
STM32L152RBH6 FAQ
1.How can I place an order for STM32L152RBH6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L152RBH6 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 STM32L152RBH6 reliable?
The price and inventory of STM32L152RBH6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L152RBH6 is usually 5 days.
3.What payment methods are accepted for STM32L152RBH6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L152RBH6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L152RBH6?
STM32L152RBH6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L152RBH6 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 STM32L152RBH6?
For technical support, including STM32L152RBH6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L152RBH6 requirements.
6.How does Aetrix verify that STM32L152RBH6 is sourced from the original manufacturer or authorized distributors?
All STM32L152RBH6 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 STM32L152RBH6 meets industry standards.
7.What is the process for return or replacement of STM32L152RBH6?
All STM32L152RBH6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L152RBH6, 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 STM32L152RBH6 part is unused and in its original packaging.
Return procedure for STM32L152RBH6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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