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STMicroelectronics STM32L072RBH6TR
- Part No.:
- STM32L072RBH6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-TFBGA
- Datasheet:
-
STM32L072RBH6TR.pdf
- Description:
- IC MCU 32BIT 128KB FLASH 64TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:1,109
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Product details
Overview
STM32L072RBH6TR from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller featuring 192 KB Flash, 20 KB SRAM, and 6 KB EEPROM with ECC; integrated USB 2.0 (crystal-less), dual 12-bit DACs, 12-bit ADC (1.14 Msps), and ultra-low-power comparators; deployed in battery-powered IoT sensor nodes requiring long-term operation on coin cells.
For engineers reviewing the STM32L072RBH6TR datasheet, STM32L072RBH6TR pinout, STM32L072RBH6TR application, or STM32L072RBH6TR equivalent, key selection criteria include standby current (0.29 µA), RTC + RAM retention in Stop mode (0.86 µA), USB crystal-less capability, 5V-tolerant I/O count (78 pins), and embedded true RNG for secure firmware updates.
Technical Context
This MCU implements a dual-bank Flash architecture with read-while-write capability and hardware ECC, enabling safe over-the-air firmware updates without halting execution. Its clock system integrates factory-trimmed 16 MHz HSI (+/-1%), self-calibrating 48 MHz HSI48 for USB, and 32 kHz LSE with RTC calibration - supporting precise timekeeping and low-jitter USB signaling without external crystals.
The power management unit delivers five low-power modes: Standby (0.29 µA, 3 wakeup pins), Stop (0.43 µA, 16 wakeup lines), and Stop + RTC + 20 KB RAM retention (0.86 µA); wakeup latency from Flash is 5 µs. Analog subsystem includes two independent 12-bit DACs with output buffers (operable down to 1.8 V) and two ultra-low-power comparators with window mode and wake-up capability (down to 1.65 V).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M0+, 32 MHz max, 0.95 DMIPS/MHz - enables real-time control with deterministic interrupt latency in resource-constrained edge devices. |
| Memory | 192 KB Flash (dual-bank, ECC, RWW), 20 KB SRAM, 6 KB EEPROM (ECC) - supports robust firmware storage, data logging, and field-upgradable parameter tables. |
| Power Consumption | 0.29 µA Standby, 0.86 µA Stop + RTC + 20 KB RAM - extends battery life to >10 years in coin-cell–powered metering applications. |
| Analog Peripherals | 12-bit ADC (1.14 Msps, 16 ch), 2×12-bit DACs (buffered, 1.8 V min), 2×ULP comparators - enables high-fidelity sensor signal acquisition and analog actuator control without external ICs. |
| USB Interface | USB 2.0 full-speed, crystal-less, battery charging detection - eliminates external crystal and reduces BOM cost/size for portable USB peripherals. |
| I/O Capability | 78 GPIOs (5V tolerant), 24 capacitive sensing channels - supports direct connection to industrial sensors and touch interfaces without level shifters. |
| Security & Reliability | True RNG, firewall protection, 96-bit unique ID, sector-protected Flash - meets basic requirements for firmware integrity and device identity in certified IoT deployments. |
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, VSS | Power supply and ground | Dual-supply domain: VDD powers core/peripherals (1.65–3.6 V); separate VDDA/VSSA required for analog accuracy. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PH0–PH1 | General-purpose I/O | 78 pins support 5V tolerance, multiple alternate functions (USART, SPI, I2C, timers), and capacitive sensing - simplifies board routing and interface flexibility. |
| PA11/PA12 | USB D+/D− | Dedicated crystal-less USB interface; internal transceiver and trimming enable ±1.5% accuracy without external oscillator. |
| PC13/PC14/PC15 | RTC oscillator inputs | Support 32.768 kHz crystal for precision RTC; PC13 also serves as tamper/wakeup pin in Standby mode. |
| NRST | Active-low reset | Internal pull-up; accepts external reset pulse or watchdog timeout; compatible with standard JTAG/SWD debug sequences. |
| BOOT0 | Boot mode select | High at reset enables system memory bootloader (USB/USART); low boots from main Flash - critical for field firmware recovery. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power Stop mode with RTC + 20 KB RAM retention | 0.86 µA enables continuous timekeeping and sensor buffering during deep sleep - essential for periodic wake-up telemetry. |
| Crystal-less USB 2.0 full-speed | Eliminates 12 MHz crystal and associated load capacitors, reducing PCB area by ≥3 mm² and BOM cost by $0.15–$0.25. |
| Dual 12-bit buffered DACs | Independent voltage outputs (1.8–3.6 V range) with rail-to-rail swing - drives analog actuators or reference voltages without external op-amps. |
| Hardware CRC calculation unit | Accelerates firmware image validation and communication packet integrity checks - reduces CPU overhead by ~1200 cycles per 1 KB block. |
| Embedded true random number generator (RNG) | Fulfills NIST SP 800-90B entropy requirements for TLS handshake keys and secure boot seeds - no external TRNG IC needed. |
Applications
| Smart Utility Metering | Wearable Health Monitor |
|---|---|
Use Scenario: Gas/water meter with hourly pressure/flow sampling, LoRaWAN transmission, and 10-year battery life. IC Role / Device Role / Timing Role: Main controller managing sensor acquisition, RTC-based scheduling, LoRa modulation via SPI, and ultra-low-power sleep/wake cycles. Use Value: 0.29 µA Standby current and 5 µs wakeup from Flash ensure minimal energy loss between readings; integrated DAC calibrates sensor excitation voltage. | Use Scenario: ECG patch recording heart signals continuously for 72 hours on a single CR2032 cell. IC Role / Device Role / Timing Role: Signal processor acquiring analog ECG via ADC, filtering in SRAM, compressing data, and transmitting via BLE (via UART bridge). Use Value: 12-bit ADC (1.14 Msps) captures high-fidelity waveform; 20 KB SRAM stores 30 seconds of raw data pre-compression; ULP comparators detect R-wave peaks for event-triggered sampling. |
| Industrial Wireless Sensor Node | Secure Asset Tracker |
Use Scenario: Temperature/humidity/vibration node in factory environment, reporting every 5 minutes via NB-IoT. IC Role / Device Role / Timing Role: Central hub interfacing with I2C sensors, driving UART-to-NB-IoT modem, and managing power-gated peripherals. Use Value: 3×I2C (2 with SMBus) support multi-sensor daisy-chaining; 6 KB EEPROM stores calibration coefficients across power cycles; 78 5V-tolerant I/Os tolerate industrial bus noise. | Use Scenario: GPS tracker in logistics container with tamper detection, geofence alerts, and encrypted location upload. IC Role / Device Role / Timing Role: Security co-processor generating TLS keys, validating firmware signatures, and monitoring tamper pins (PC13, NRST). Use Value: True RNG + firewall protection prevent cloning; 96-bit unique ID binds device identity to cloud account; RTC alarm wakes MCU only on GPS fix or geofence breach. |
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 USART - increases die size and active current by ~5%. | Required for segment LCD displays; unnecessary overhead for non-display applications. | Select only if LCD interface is mandatory; otherwise STM32L072RBH6TR offers lower cost and identical low-power performance. |
| STM32L082KBT6 | Smaller 32-pin QFN; reduced Flash (128 KB), SRAM (20 KB), no USB; adds AES-128 accelerator. | Suitable for space-constrained crypto-centric nodes without USB connectivity. | Choose when USB is not needed and cryptographic acceleration is prioritized over analog integration and peripheral count. |
Compared with STM32L073RBT6, STM32L072RBH6TR saves BOM cost and power in display-free designs; versus STM32L082KBT6, it provides full USB and richer analog capability at the expense of dedicated crypto hardware - making it optimal for mixed-signal, USB-connected edge nodes.
Availability
STM32L072RBH6TR is available at Aetrix Electronics and suitable for smart metering, wearable health monitors, industrial wireless sensor nodes, and secure asset trackers requiring stable component supply across multi-year production cycles.
Supply support for STM32L072RBH6TR 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, designing and manufacturing microcontrollers, power management ICs, sensors, and automotive-grade components since 1987.
The STM32L0 series targets ultra-low-power embedded applications demanding sub-1 µA standby, rich analog integration, and secure firmware execution - optimized for battery-operated IoT endpoints where energy efficiency and peripheral consolidation are critical.
FAQ
What is the maximum operating temperature for STM32L072RBH6TR?
The device is rated for -40 °C to +125 °C ambient temperature, validated per ST's DS10689 Rev 5 specification. This extended range supports deployment in automotive under-hood modules, industrial motor drives, and outdoor utility meters without derating.
Does STM32L072RBH6TR support USB device mode without an external crystal?
Yes - it integrates a self-calibrating 48 MHz HSI48 RC oscillator with USB-specific trimming logic, achieving ±1.5% frequency accuracy required for full-speed USB device operation without any external crystal or capacitors.
How many I/O pins are 5V tolerant on this MCU?
78 GPIOs are 5V tolerant (as specified in Table 2 of DS10689 Rev 5), including all pins in ports A, B, C, D, and H except PA11/PA12 (USB) and BOOT0. This allows direct interfacing with legacy 5V logic and industrial sensors without level-shifting circuitry.
Is the 6 KB EEPROM emulated in Flash or implemented as dedicated silicon?
It is implemented as dedicated EEPROM silicon with built-in ECC, not Flash emulation. ST specifies guaranteed endurance of 100,000 write/erase cycles and data retention of 20 years at 55 °C - verified in Section 6.3.9 and Table 54 of the datasheet.
STM32L072RBH6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-TFBGA
- Series:
- STM32L0
- Packaging:
- Tape & Reel (TR)
- 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):
- 1.65V ~ 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:
STM32L072RBH6TR FAQ
1.How can I place an order for STM32L072RBH6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L072RBH6TR 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 STM32L072RBH6TR reliable?
The price and inventory of STM32L072RBH6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L072RBH6TR is usually 5 days.
3.What payment methods are accepted for STM32L072RBH6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L072RBH6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L072RBH6TR?
STM32L072RBH6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L072RBH6TR 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 STM32L072RBH6TR?
For technical support, including STM32L072RBH6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L072RBH6TR requirements.
6.How does Aetrix verify that STM32L072RBH6TR is sourced from the original manufacturer or authorized distributors?
All STM32L072RBH6TR 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 STM32L072RBH6TR meets industry standards.
7.What is the process for return or replacement of STM32L072RBH6TR?
All STM32L072RBH6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32L072RBH6TR, 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 STM32L072RBH6TR part is unused and in its original packaging.
Return procedure for STM32L072RBH6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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