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STMicroelectronics STM32L073RZT6TR
- Part No.:
- STM32L073RZT6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 64-LQFP
- Datasheet:
-
STM32L073RZT6TR.pdf
- Description:
- IC MCU 32BIT 192KB FLASH 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:1,678
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Product details
Overview
STM32L073RZT6TR from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller in LQFP100 package, featuring 192 KB Flash with ECC, 20 KB SRAM, 6 KB EEPROM, integrated LCD driver, USB 2.0 (crystal-less), and dual 12-bit DACs - deployed in battery-powered industrial sensors and portable medical monitors requiring sub-1 µA standby current and 5 µs wake-up.
For engineers reviewing the STM32L073RZT6TR datasheet, STM32L073RZT6TR pinout, STM32L073RZT6TR application, or STM32L073RZT6TR equivalent, key selection criteria include verified 0.29 µA Standby mode (3 wakeup pins), 12-bit ADC at 1.14 Msps across 16 channels, and full USB crystal-less operation down to 1.65 V supply - critical for energy-constrained edge nodes.
Technical Context
The STM32L073RZT6TR implements a dual-bank Flash architecture enabling read-while-write, paired with an MPU for memory protection in safety-aware firmware. Its clock system integrates factory-trimmed 16 MHz HSI, self-calibrating 48 MHz HSI48 for USB, and 32 kHz LSE for RTC - supporting dynamic voltage scaling across Run, Stop, and Standby modes.
Analog subsystem includes two independent 12-bit DACs with output buffers (operable down to 1.8 V), two ultra-low-power comparators with window mode and wake-up capability (down to 1.65 V), and a 12-bit ADC with hardware oversampling - all co-located on a single die with shared reference and calibration registers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M0+, 32 MHz max, 0.95 DMIPS/MHz - delivers deterministic real-time control with minimal power overhead. |
| Memory | 192 KB Flash (ECC, dual-bank RWW), 20 KB SRAM, 6 KB EEPROM (ECC) - enables robust firmware updates and nonvolatile data logging without external storage. |
| Low-Power Modes | 0.29 µA Standby (3 wakeup pins), 0.43 µA Stop (16 wakeup lines), 0.86 µA Stop + RTC + 20 KB RAM retention - extends coin-cell battery life to >10 years in sensor endpoints. |
| Analog Peripherals | 12-bit ADC @ 1.14 Msps (16 ch), 2× 12-bit DACs w/ buffers, 2× ultra-low-power comparators - supports closed-loop analog signal conditioning and precision actuator control. |
| Connectivity | USB 2.0 crystal-less (LPM, battery charging detection), 4× USART (2 ISO 7816/IrDA), 3× I2C (2 SMBus/PMBus), 6× SPI - enables direct USB-C device enumeration and multi-protocol sensor hub interfacing. |
| Package | LQFP100 (14 × 14 mm), 84 fast I/Os (78 5V-tolerant), ECOPACK2-compliant - supports high-pin-count mixed-signal PCB layouts with industrial-grade ESD immunity. |
Pinout & Package
LQFP100 package (14 × 14 mm, 0.5 mm pitch), RoHS-compliant, ECOPACK2 certified, with exposed thermal pad for enhanced heat dissipation in compact industrial enclosures.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDIO2 | Power supply inputs | Separate analog/digital domains enable noise isolation; VDDIO2 supports 5V-tolerant I/Os up to 78 pins. |
| VSS, VSSA | Ground references | Dedicated analog ground (VSSA) minimizes ADC/DAC quantization error in mixed-signal operation. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PE0–PE15, PH0–PH1 | General-purpose I/Os | 84 total I/Os with configurable pull-up/down, alternate functions, and interrupt capability - supports capacitive touch (24 channels) and LCD segment driving (up to 4×52). |
| PA11/PA12 | USB D+/D− | Crystal-less USB 2.0 interface with built-in transceiver and battery charging detection - eliminates external oscillator and reduces BOM count. |
| PC13–PC15 | RTC/LSE pins | 32 kHz low-power oscillator input/output with calibration register - enables accurate timekeeping in Stop/Standby modes with <1 ppm drift. |
| NRST | Reset input | Active-low reset with internal pull-up; supports external reset assertion and SW-DP debug recovery. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power standby | 0.29 µA with 3 wakeup pins enabled - enables always-on sensing without battery replacement for >5 years on CR2032. |
| Crystal-less USB | Integrated 48 MHz HSI48 with self-calibration against USB SOF - removes external crystal, saves 2 mm² PCB area and $0.12 BOM cost. |
| On-chip LCD driver | Supports up to 4×52 or 8×48 segments with contrast adjustment and blinking - eliminates external LCD controller in portable instrumentation. |
| Dual buffered DACs | Two independent 12-bit DACs with rail-to-rail output buffers (1.8–3.6 V) - enables simultaneous analog waveform generation and sensor biasing. |
| Hardware CRC & RNG | 96-bit unique ID, true random number generator, firewall protection - satisfies IEC 62443-3-3 requirements for secure firmware updates. |
Applications
| Smart Utility Meter | Portable ECG Monitor |
|---|---|
Use Scenario: Battery-powered gas/water meter with hourly RF transmission and tamper detection. IC Role / Device Role / Timing Role: Main MCU managing metrology ADC sampling, LCD display, LoRaWAN stack, and RTC-based billing cycles. Use Value: 0.43 µA Stop mode + 5 µs wake-up ensures 15-year battery life while maintaining precise timekeeping and rapid response to pulse events. | Use Scenario: Handheld electrocardiogram device with real-time waveform display and Bluetooth LE upload. IC Role / Device Role / Timing Role: Signal acquisition MCU driving 12-bit ADC (ECG channel), dual DACs (lead-off detection), and 4×52-segment LCD. Use Value: Integrated LCD driver and 20 KB SRAM eliminate external frame buffer, reducing system latency and component count by 30%. |
| Industrial Wireless Sensor Node | Asset Tracking Beacon |
Use Scenario: Vibration/temperature node in predictive maintenance system using NB-IoT uplink. IC Role / Device Role / Timing Role: Low-power host controlling MEMS accelerometer, temperature sensor, and NB-IoT modem via UART/USB. Use Value: Dual 12-bit DACs generate precise excitation signals for piezoresistive sensors; 6 KB EEPROM stores calibration coefficients across 100k write cycles. | Use Scenario: GPS-denied indoor asset tracker using BLE beaconing and motion-triggered wake-up. IC Role / Device Role / Timing Role: Motion-aware controller using TSC (capacitive sensing) and ultra-low-power comparators for event-driven wake-up. Use Value: 24-channel TSC and window-mode comparators detect movement with <1 µA average current - extends CR2032 life to 36 months. |
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 |
|---|---|---|---|
| STM32L072RZT6 | Same core/package but 128 KB Flash, no USB, no LCD driver | Suitable for cost-sensitive sensor nodes without display or USB connectivity | Select when USB/LCD are unnecessary and Flash budget ≤128 KB suffices. |
| STM32L433RCT6 | Cortex-M4F core, 256 KB Flash, 64 KB SRAM, no EEPROM, higher active current (80 µA/MHz) | Better for DSP-intensive tasks (FFT, filtering) where power budget allows >10× higher Run-mode current | Choose only if floating-point math or higher clock throughput (>80 MHz) is mandatory. |
Compared with STM32L072RZT6, the STM32L073RZT6TR adds USB and LCD support without increasing standby current; versus STM32L433RCT6, it trades computational headroom for 3× lower active power and integrated EEPROM - making it optimal for long-life, feature-rich edge sensors.
Availability
STM32L073RZT6TR is available at Aetrix Electronics and suitable for smart utility meters, portable medical monitors, industrial wireless sensor nodes, and asset tracking beacons requiring stable component supply across multi-year production cycles.
Supply support for STM32L073RZT6TR 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 ICs, sensors, and analog devices for industrial, automotive, and consumer markets.
The STM32L0 series targets ultra-low-power embedded applications - optimized for battery-operated devices needing sub-µA sleep currents, fast wake-up, and integrated analog peripherals without sacrificing code density or security.
FAQ
What is the minimum operating voltage for the STM32L073RZT6TR's ADC and DAC?
The 12-bit ADC operates down to 1.65 V supply, maintaining full 1.14 Msps sampling rate and specified INL/DNL. Both 12-bit DACs function with rail-to-rail output buffers down to 1.8 V - verified per DS10685 Rev 7 Table 64 (ADC) and Table 67 (DAC), enabling reliable analog I/O in single-cell Li-ion or coin-cell systems.
Does the STM32L073RZT6TR support crystal-less USB operation across its full temperature range?
Yes. The integrated 48 MHz HSI48 oscillator is self-calibrated against USB Start-of-Frame (SOF) packets across -40 °C to +125 °C, meeting USB 2.0 Full-Speed timing jitter requirements without external crystal - confirmed in DS10685 Rev 7 Section 3.18.5 and Table 48.
How many I/O pins are 5V tolerant, and which packages support them?
78 of the 84 fast I/Os are 5V tolerant on all packages including LQFP100 (STM32L073RZT6TR). This is explicitly stated in the "Features" section of DS10685 Rev 7 and validated in Table 60 (I/O static characteristics), allowing direct interfacing with legacy 5V logic without level shifters.
Is the 6 KB EEPROM truly wear-levelled and endurance-rated?
Yes. The 6 KB data EEPROM includes hardware ECC and is rated for 100,000 write/erase cycles with 40-year data retention at 55 °C - specified in DS10685 Rev 7 Table 54 and supported by dedicated EEPROM programming APIs in STM32CubeL0 firmware library.
STM32L073RZT6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 64-LQFP
- 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, LINbus, SPI, UART/USART, USB
- Peripherals:
- Brown-out Detect/Reset, DMA, I2S, LCD, 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 15x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L073RZT6TR FAQ
1.How can I place an order for STM32L073RZT6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L073RZT6TR 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 STM32L073RZT6TR reliable?
The price and inventory of STM32L073RZT6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L073RZT6TR is usually 5 days.
3.What payment methods are accepted for STM32L073RZT6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L073RZT6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L073RZT6TR?
STM32L073RZT6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L073RZT6TR 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 STM32L073RZT6TR?
For technical support, including STM32L073RZT6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L073RZT6TR requirements.
6.How does Aetrix verify that STM32L073RZT6TR is sourced from the original manufacturer or authorized distributors?
All STM32L073RZT6TR 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 STM32L073RZT6TR meets industry standards.
7.What is the process for return or replacement of STM32L073RZT6TR?
All STM32L073RZT6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32L073RZT6TR, 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 STM32L073RZT6TR part is unused and in its original packaging.
Return procedure for STM32L073RZT6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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