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STMicroelectronics STM32L072RBI6
- Part No.:
- STM32L072RBI6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-UFBGA
- Datasheet:
-
STM32L072RBI6.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 64UFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,591
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Product details
Overview
STM32L072RBI6 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller in LQFP64 package, featuring 192 KB Flash with ECC, 20 KB SRAM, 6 KB EEPROM, USB 2.0 (crystal-less), and dual 12-bit DACs. It operates from 1.65–3.6 V across –40 to +125 °C, delivering 0.86 µA Stop mode + RTC + 20-KB RAM retention and 93 µA/MHz Run mode-ideal for battery-powered industrial sensors and portable medical devices.
For engineers reviewing the STM32L072RBI6 datasheet, STM32L072RBI6 pinout, STM32L072RBI6 application, or STM32L072RBI6 equivalent, key selection criteria include verified low-power mode current specs (e.g., 0.29 µA Standby), USB crystal-less timing compliance, 5V-tolerant I/O count (78 pins), and dual DAC output buffer operation down to 1.8 V.
Technical Context
The STM32L072RBI6 integrates a Cortex-M0+ core with MPU, supporting dynamic voltage scaling and clock frequencies up to 32 MHz. Its memory subsystem includes two-bank Flash with read-while-write capability and ECC protection for both Flash and 6 KB data EEPROM-enabling robust firmware updates and parameter storage in harsh environments.
Peripheral interconnect is managed via an AHB/APB matrix supporting concurrent DMA transfers to ADC, USART, SPI, I2C, DAC, and timers. The USB interface uses an internal 48 MHz RC oscillator with self-calibration, eliminating external crystal requirements while maintaining ±0.25% accuracy over temperature and voltage for LPM and battery charging detection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M0+, 32 MHz max, 0.95 DMIPS/MHz - enables deterministic real-time control with minimal power overhead |
| Flash / SRAM / EEPROM | 192 KB Flash (ECC, 2-bank RWW), 20 KB SRAM, 6 KB EEPROM (ECC) - supports safe over-the-air updates and nonvolatile configuration storage |
| Low-Power Modes | 0.29 µA Standby (3 wakeup pins), 0.86 µA Stop+RTC+20KB RAM - extends coin-cell battery life to >10 years in periodic-sensing applications |
| Analog Peripherals | 12-bit ADC (1.14 Msps, 16 ch, down to 1.65 V), 2×12-bit DACs with buffers (down to 1.8 V), 2 ultra-low-power comparators - enables precision sensor signal chain without external signal conditioning |
| USB Interface | USB 2.0 full-speed, crystal-less, with battery charging detection and LPM - reduces BOM cost and PCB area while supporting USB-C power negotiation |
| I/O Capability | 78 I/Os (5V tolerant), 24 capacitive sensing channels - allows direct connection to legacy 5V peripherals and integrated touch UI without level shifters |
| Clock Sources | HSI16 (±1%), HSI48 (self-calibrated for USB), LSE (32 kHz RTC), MSI (65 kHz–4.2 MHz) - eliminates need for external crystals in most configurations |
Pinout & Package
LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad; RoHS-compliant, ECOPACK2 certified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDIO2 | Power supply inputs | Separate analog/digital/IO domains enable noise isolation and flexible power sequencing |
| VSS, VSSA, VSSIO2 | Ground returns | Dedicated analog ground improves ADC/DAC SNR; IO ground separation prevents digital switching noise coupling |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PH0–PH1 | General-purpose I/Os | 78 pins support 5V tolerance, multiple alternate functions (USART, SPI, I2C, USB, TSC), and wakeup capability |
| PA1, PA2, PA3, PA4, PA5, PA6, PA7, PA8, PA9, PA10, PA11, PA12, PA13, PA14, PA15, PB0, PB1, PB2, PB10, PB11, PB12, PB13, PB14, PB15, PC0, PC1, PC2, PC3, PC4, PC5, PC6, PC7, PC8, PC9, PC10, PC11, PC12, PC13, PC14, PC15, PD0, PD1, PD2, PD3, PD4, PD5, PD6, PD7, PD8, PD9, PD10, PD11, PD12, PD13, PD14, PD15, PH0, PH1 | Alternate function mapping | Full peripheral routing flexibility: e.g., PA11/PA12 for USB D+/D−, PB6/PB7 for I2C1, PA9/PA10 for USART1 |
| NRST | Active-low reset input | Internal pull-up; accepts 1.65–3.6 V logic; supports external reset supervisor or pushbutton |
| BOOT0 | Boot mode selection | High at reset enters system memory bootloader (USB/USART); low boots from main Flash |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power standby | 0.29 µA with 3 wakeup pins active - enables immediate response to external events without wake latency penalty |
| Crystal-less USB | 48 MHz HSI48 oscillator calibrated to ±0.25% via CRS - removes 12 MHz crystal and matching capacitors, reducing BOM and layout complexity |
| Embedded EEPROM | 6 KB data EEPROM with ECC and 100k write cycles - replaces external serial EEPROM for calibration data, counters, and field-updatable parameters |
| Capacitive sensing controller | 24-channel TSC supporting touchkey, linear, and rotary sensors - enables intuitive HMI with <1 µA active current during scan |
| True random number generator | Digital TRNG compliant with NIST SP800-90B - provides entropy source for secure boot, key generation, and cryptographic operations |
Applications
| Smart Utility Metering | Portable Medical Monitor |
|---|---|
Use Scenario: Battery-operated gas/water meter with hourly pressure/flow readings, RF transmission, and tamper detection. IC Role / Device Role / Timing Role: Main MCU handling sensor acquisition (ADC), secure data logging (EEPROM), LoRaWAN packet assembly (USART/SPI), and ultra-low-power scheduling (RTC + LPTIM). Use Value: 0.43 µA Stop mode and 5 µs Flash wakeup minimize energy per measurement cycle, extending 2xAA battery life beyond 15 years. | Use Scenario: Handheld ECG device with analog front-end, real-time waveform display, and Bluetooth LE data export. IC Role / Device Role / Timing Role: Signal processor interfacing 12-bit ADC (lead II/III), driving OLED via SPI, managing dual DAC-based reference generation, and executing BLE stack on Cortex-M0+. Use Value: Dual 12-bit DACs with output buffers (1.8 V min) provide stable bias voltages for analog front-end without external op-amps. |
| Industrial Predictive Maintenance Sensor | Asset Tracking Beacon |
Use Scenario: Vibration/temperature node mounted on rotating machinery, sampling every 5 minutes and transmitting via NB-IoT. IC Role / Device Role / Timing Role: Low-power scheduler (LPTIM), accelerometer interface (I2C), temperature sensing (internal sensor + ADC), and secure firmware update handler (Flash ECC + CRC). Use Value: 0.86 µA Stop+RTC+20KB RAM retention preserves context and timestamp between samples, eliminating boot overhead and flash wear. | Use Scenario: GPS-denied indoor asset tag using BLE proximity and motion-triggered location reporting. IC Role / Device Role / Timing Role: Motion event detector (comparator + GPIO wakeup), BLE advertiser (USB/USART bootloader), and secure ID manager (96-bit UID + firewall). Use Value: Two ultra-low-power comparators with window mode detect acceleration thresholds below 1 µA, enabling motion-triggered wake without CPU polling. |
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 |
|---|---|---|---|
| STM32L073RBT6 | Same package and pinout; adds LCD controller and extra 2 KB SRAM | Required only if segment LCD driving or larger RAM buffer needed | Select when display integration is mandatory; otherwise identical power/performance profile |
| STM32L082KBU6 | QFN32 package, 128 KB Flash, no USB, adds AES-128 crypto accelerator | Suitable for space-constrained crypto-enabled nodes without USB connectivity | Choose for compact footprint and hardware encryption where USB is unnecessary |
Compared with STM32L073RBT6, the STM32L072RBI6 omits LCD support but maintains identical low-power performance and USB capability-making it optimal for non-display applications requiring crystal-less USB. Versus STM32L082KBU6, it trades crypto acceleration for USB and larger memory, prioritizing connectivity over security acceleration.
Availability
STM32L072RBI6 is available at Aetrix Electronics and suitable for smart utility metering, portable medical monitors, industrial predictive maintenance sensors, and asset tracking beacons requiring stable component supply across extended product lifecycles.
Supply support for STM32L072RBI6 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 STM32L0 series targets ultra-low-power embedded applications demanding multi-year battery life, robust memory integrity, and rich analog integration-optimized for IoT edge nodes, wearables, and industrial monitoring systems.
FAQ
What is the maximum operating temperature range for the STM32L072RBI6?
The STM32L072RBI6 is rated for continuous operation from –40 °C to +125 °C ambient temperature. This extended range is validated per ST's production test flow and supports deployment in automotive under-hood modules, industrial motor drives, and outdoor utility infrastructure without derating.
Does the STM32L072RBI6 support hardware encryption?
No, the STM32L072RBI6 does not integrate hardware AES or PKA accelerators. It includes a true RNG and memory firewall for basic security, but cryptographic operations must be implemented in software. For hardware-accelerated encryption, consider the STM32L082 or STM32L4 series.
Can the internal 48 MHz RC oscillator meet USB full-speed timing requirements?
Yes-the HSI48 oscillator is factory-trimmed and continuously calibrated via the Clock Recovery System (CRS) against USB SOF packets, achieving ±0.25% accuracy across voltage (1.65–3.6 V) and temperature (–40 to +125 °C), satisfying USB 2.0 full-speed (12 Mbps) timing without an external crystal.
How many I/O pins are 5V tolerant on the STM32L072RBI6?
78 of the 84 fast I/Os on the STM32L072RBI6 are 5V tolerant when VDD is ≥2.0 V. This includes all GPIOs except those dedicated to USB (PA11/PA12), SWD (PA13/PA14), and BOOT0/NRST. Full 5V tolerance simplifies interfacing with legacy peripherals and level-shifter elimination.
STM32L072RBI6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-UFBGA
- Series:
- STM32L0
- Packaging:
- Tray
- Product Status:
- Active
- Programmable:
- Not Verified
- Core Processor:
- ARM® Cortex®-M0+
- Core Size:
- 32-Bit Single-Core
- Speed:
- 32MHz
- Connectivity:
- I2C, IrDA, SPI, UART/USART, USB
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O:
- 51
- Program Memory Size:
- 128KB (128K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 6K x 8
- RAM Size:
- 20K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.8V ~ 3.6V
- Data Converters:
- A/D 16x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L072RBI6 FAQ
1.How can I place an order for STM32L072RBI6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L072RBI6 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 STM32L072RBI6 reliable?
The price and inventory of STM32L072RBI6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L072RBI6 is usually 5 days.
3.What payment methods are accepted for STM32L072RBI6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L072RBI6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L072RBI6?
STM32L072RBI6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L072RBI6 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 STM32L072RBI6?
For technical support, including STM32L072RBI6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L072RBI6 requirements.
6.How does Aetrix verify that STM32L072RBI6 is sourced from the original manufacturer or authorized distributors?
All STM32L072RBI6 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 STM32L072RBI6 meets industry standards.
7.What is the process for return or replacement of STM32L072RBI6?
All STM32L072RBI6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L072RBI6, 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 STM32L072RBI6 part is unused and in its original packaging.
Return procedure for STM32L072RBI6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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