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STMicroelectronics STM32L072RZI6TR
- Part No.:
- STM32L072RZI6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-UFBGA
- Datasheet:
-
STM32L072RZI6TR.pdf
- Description:
- IC MCU 32BIT 192KB FLASH 64UFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:2,279
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Product details
Overview
STM32L072RZI6TR from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller with 192 KB Flash, 20 KB SRAM, and 6 KB EEPROM featuring USB 2.0 (crystal-less), dual 12-bit DACs, 12-bit ADC (1.14 Msps), and operating voltage range 1.65–3.6 V. It delivers 0.95 DMIPS/MHz performance at up to 32 MHz and supports -40 to +125 °C industrial temperature operation in battery-powered sensor nodes.
For engineers reviewing the STM32L072RZI6TR datasheet, STM32L072RZI6TR pinout, STM32L072RZI6TR application, or STM32L072RZI6TR equivalent, key selection criteria include ultra-low-power mode current (0.29 µA Standby), USB crystal-less capability, 78 5V-tolerant I/Os, and integrated true RNG with firewall protection for secure edge sensing.
Technical Context
The STM32L072RZI6TR integrates a Cortex-M0+ core with Memory Protection Unit (MPU), supporting dynamic voltage scaling across three power ranges (Range 1: 1.65–1.95 V; Range 2: 1.95–3.6 V) to optimize active and low-power mode efficiency. Its clock system includes factory-trimmed 16 MHz HSI (+/-1%), self-calibrating 48 MHz HSI48 for USB, and 32 kHz LSE for RTC.
Analog subsystem comprises two independent 12-bit DACs with output buffers (operable down to 1.8 V), a 16-channel 12-bit ADC (1.14 Msps, down to 1.65 V), and two ultra-low-power comparators with window mode and wake-up capability - all fully functional in low-voltage operating ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M0+ with MPU, 0.95 DMIPS/MHz @ 32 MHz max - enables deterministic real-time control in resource-constrained edge devices. |
| Memory | 192 KB Flash (ECC, read-while-write), 20 KB SRAM, 6 KB EEPROM (ECC) - supports firmware updates, data logging, and parameter retention without external memory. |
| Power Modes | 0.29 µA Standby (3 wakeup pins), 0.86 µA Stop+RTC+20KB RAM retention - extends battery life to multi-year operation in coin-cell powered IoT endpoints. |
| 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 conditioning and analog actuation in single-chip designs. |
| USB Interface | USB 2.0 full-speed, crystal-less, with battery charging detection - eliminates external crystal and reduces BOM cost/footprint for portable USB peripherals. |
| I/O Capability | 78 I/Os (5V tolerant), 24 capacitive sensing channels - supports direct interfacing to industrial sensors, displays, and touch interfaces without level shifters. |
| Security & ID | True RNG, 96-bit unique ID, firewall protection - provides hardware-rooted entropy and device identity for secure firmware authentication and OTA updates. |
Pinout & Package
LQFP64 (10 × 10 mm, 0.5 mm pitch) package with exposed thermal pad - optimized for thermal dissipation in compact industrial PCB layouts and compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual VDD/VSS pairs ensure stable core and I/O domain operation; supports separate analog ground connection for noise-sensitive ADC/DAC use. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PE0–PE1, PH0–PH1 | General-purpose I/Os | 78 total GPIOs (5V tolerant on most); multiple alternate functions per pin enable flexible peripheral mapping (e.g., USART, SPI, I2C, TSC). |
| PA1, PA2, PA3, PA4, PA5, PA6, PA7, PA8, PA15, PB0, PB1, PB2, PB10, PB11, PC0–PC7, PD2, PH0, PH1 | Analog input / DAC output / comparator input | Supports simultaneous ADC sampling, DAC waveform generation, and comparator-triggered wake-up - critical for closed-loop analog monitoring. |
| PA11, PA12 | USB D+/D− | Crysal-less USB interface; internal transceiver and trimming eliminate need for external oscillator and reduce EMI susceptibility. |
| NRST | Active-low reset | Configurable reset threshold via PVD; supports both external push-button and software-controlled reset with brownout protection. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power architecture | 0.29 µA Standby with 3 wakeup pins and 20-byte backup registers - enables maintenance-free operation in energy-harvesting or sealed-battery applications. |
| Integrated USB crystal-less PHY | Self-calibrating 48 MHz HSI48 clock with ±0.25% accuracy over temperature - achieves USB compliance without external crystal or trim capacitor. |
| Dual buffered 12-bit DACs | Independent outputs with rail-to-rail swing down to 1.8 V supply - supports precision analog stimulus generation (e.g., sensor calibration, bias control) without external op-amps. |
| Capacitive touch sensing controller (TSC) | 24-channel support for touchkey, linear, and rotary sensors with hardware-accelerated acquisition - enables robust human interface design with <1 µA active current during scan. |
| True random number generator (RNG) | FIPS-compliant entropy source with built-in health tests - satisfies cryptographic requirements for TLS handshake, key derivation, and secure boot verification. |
Applications
| Smart Utility Metering | Portable Medical Sensor |
|---|---|
Use Scenario: Battery-powered gas/water meter with pressure, temperature, and flow sensing, transmitting data via NB-IoT or LoRaWAN. IC Role / Device Role / Timing Role: Main system controller managing sensor acquisition, data encryption, RTC-based time-stamping, and low-power wireless stack execution. Use Value: 0.86 µA Stop+RTC+RAM retention enables >10-year battery life; integrated AES accelerator (via DMA + RNG) secures payload transmission without CPU overhead. |
Use Scenario: Wearable ECG patch with dry-electrode sensing, real-time QRS detection, and Bluetooth LE telemetry. IC Role / Device Role / Timing Role: Signal acquisition hub performing analog front-end conditioning (ADC + DAC for lead-off detection), digital filtering, and BLE packet assembly. Use Value: Dual 12-bit DACs generate precise reference voltages for electrode bias; 12-bit ADC achieves 70 dB SNR at 1 kSPS - meets AAMI EC11 clinical accuracy requirements. |
| Industrial Predictive Maintenance Node | Secure Asset Tracking Tag |
Use Scenario: Vibration and temperature monitor mounted on motor housing, logging FFT spectra and transmitting alerts via cellular modem. IC Role / Device Role / Timing Role: Real-time vibration analysis engine using hardware-accelerated CRC and DMA-driven FFT preprocessing before upload. Use Value: 7-channel DMA controller offloads CPU during sensor streaming; 192 KB Flash stores firmware + firmware update image with rollback capability. |
Use Scenario: GPS-enabled logistics tag with tamper detection, geofence alerts, and encrypted location reporting. IC Role / Device Role / Timing Role: Secure host controller managing GPS UART, accelerometer wake-up, crypto operations, and low-power sleep scheduling. Use Value: Firewall protection isolates secure key storage from application code; 96-bit unique ID enables hardware-bound certificate enrollment in PKI infrastructure. |
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 |
|---|---|---|---|
| STM32L073RZT6 | Same package and pinout; adds LCD controller (4x40 segment) and extra 2 KB SRAM - no change to Flash, DAC, or USB capability. | Required only when driving segment-based displays; adds ~0.5 µA static current in LCD-on mode. | Select if display integration is mandatory; otherwise identical firmware compatibility and power profile. |
| STM32L432KCU6 | Cortex-M4F core (100 MHz), 256 KB Flash, 64 KB SRAM, but no USB crystal-less; requires external 48 MHz crystal; higher active current (82 µA/MHz). | Better for DSP-intensive tasks (e.g., audio processing, motor FOC), but incompatible USB BOM and less optimal for coin-cell lifetime. | Choose when floating-point math or larger code footprint dominates over ultra-low-power USB connectivity. |
Compared with STM32L072RZI6TR, STM32L073RZT6 adds display support without compromising power or USB functionality, while STM32L432KCU6 trades ultra-low-power USB for higher compute throughput - making the L072 optimal for battery-constrained USB-peripheral designs.
Availability
STM32L072RZI6TR is available at Aetrix Electronics and suitable for smart utility metering, portable medical sensors, industrial predictive maintenance nodes, and secure asset tracking tags requiring stable component supply across extended product lifecycles.
Supply support for STM32L072RZI6TR 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, secure firmware execution, and rich analog integration - specifically engineered for IoT edge nodes and energy-constrained industrial systems.
FAQ
What is the maximum operating frequency and corresponding power supply range for STM32L072RZI6TR?
The STM32L072RZI6TR operates up to 32 MHz in Range 2 (1.95–3.6 V) and up to 16 MHz in Range 1 (1.65–1.95 V). Dynamic voltage scaling allows automatic frequency adjustment based on supply voltage to maintain stability and minimize active current - verified in Section 6.3.1 of DS10689 Rev 5.
Does STM32L072RZI6TR support USB without an external crystal, and what accuracy is guaranteed?
Yes - it uses the internal 48 MHz HSI48 oscillator with automatic trimming against the USB SOF signal, achieving ±0.25% frequency accuracy over -40 to +85 °C. This meets USB full-speed timing requirements without external components, as confirmed in Section 3.17.5 and Table 48 of the datasheet.
How many I/O pins are 5V tolerant, and which packages support this feature?
78 of the 84 fast I/Os are 5V tolerant, including all GPIOs except those dedicated to USB (PA11/PA12), oscillator inputs (PH0/PH1), and BOOT0. This applies identically across LQFP64, UFBGA64, and TFBGA64 packages - specified in Section 3.7 and Table 60 of DS10689 Rev 5.
Can the 6 KB EEPROM be used for secure key storage, and what protection mechanisms apply?
The 6 KB data EEPROM supports write-protection per sector and ECC error correction, but lacks hardware encryption. For secure key storage, ST recommends using the dedicated 160-bit ROP (Read-Out Protection) and firewall-protected SRAM regions alongside the True RNG - documented in Sections 3.8 and 3.19 of the datasheet.
STM32L072RZI6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-UFBGA
- 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:
- 192KB (192K 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:
STM32L072RZI6TR FAQ
1.How can I place an order for STM32L072RZI6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L072RZI6TR 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 STM32L072RZI6TR reliable?
The price and inventory of STM32L072RZI6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L072RZI6TR is usually 5 days.
3.What payment methods are accepted for STM32L072RZI6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L072RZI6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L072RZI6TR?
STM32L072RZI6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L072RZI6TR 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 STM32L072RZI6TR?
For technical support, including STM32L072RZI6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L072RZI6TR requirements.
6.How does Aetrix verify that STM32L072RZI6TR is sourced from the original manufacturer or authorized distributors?
All STM32L072RZI6TR 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 STM32L072RZI6TR meets industry standards.
7.What is the process for return or replacement of STM32L072RZI6TR?
All STM32L072RZI6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32L072RZI6TR, 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 STM32L072RZI6TR part is unused and in its original packaging.
Return procedure for STM32L072RZI6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32L072RZI6TR Tags
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