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STMicroelectronics STM32L072CZT6TR
- Part No.:
- STM32L072CZT6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 48-LQFP
- Datasheet:
-
STM32L072CZT6TR.pdf
- Description:
- IC MCU 32BIT 192KB FLASH 48LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:14,576
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Product details
Overview
STM32L072CZT6TR from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller with 192 KB Flash, 20 KB SRAM, and 6 KB EEPROM; features USB 2.0 (crystal-less), dual 12-bit DACs, 12-bit ADC (1.14 Msps), and operates from 1.65–3.6 V across –40 to +125 °C. It targets battery-powered IoT sensors and portable medical devices requiring long runtime and analog signal conditioning.
For engineers reviewing the STM32L072CZT6TR datasheet, STM32L072CZT6TR pinout, STM32L072CZT6TR application, or STM32L072CZT6TR equivalent, key selection criteria include standby current (0.29 µA), 5 µs Flash wakeup time, USB crystal-less operation, 78 5V-tolerant I/Os, and integrated true RNG with firewall protection.
Technical Context
The STM32L072CZT6TR integrates a Cortex-M0+ core with MPU, supporting dynamic voltage scaling and multiple low-power modes (Run, Sleep, Stop, Standby) with sub-µA retention. Its clock system includes factory-trimmed 16 MHz HSI, 48 MHz HSI48 (self-calibrated for USB), 32 kHz LSE for RTC, and PLL for CPU frequency up to 32 MHz.
Analog subsystem comprises two buffered 12-bit DACs (operable down to 1.8 V), a 12-bit ADC with 16 channels and 1.14 Msps sampling, two ultra-low-power comparators (with window mode and wake-up capability down to 1.65 V), and 24-channel capacitive sensing controller - all optimized for mixed-signal edge-node applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M0+ @ up to 32 MHz; 0.95 DMIPS/MHz performance with MPU for memory protection. |
| Memory | 192 KB Flash (ECC, dual-bank RWW), 20 KB SRAM, 6 KB EEPROM (ECC), 20-byte backup register. |
| Power Consumption | 0.29 µA Standby (3 wakeup pins), 0.86 µA Stop + RTC + 20 KB RAM retention, 93 µA/MHz in Run mode. |
| Analog Peripherals | 12-bit ADC (16 ch, 1.14 Msps, down to 1.65 V), 2× 12-bit DACs with buffers (down to 1.8 V), 2× ultra-low-power comparators. |
| Connectivity | 1× USB 2.0 (crystal-less, battery charging detection), 4× USART (2 ISO 7816/IrDA), 6× SPI (16 Mbit/s), 3× I2C (2 SMBus/PMBus). |
| I/O & Packaging | 78 I/Os (5V tolerant), LQFP48 package (7×7 mm, 0.5 mm pitch), ECOPACK2-compliant. |
| Security & Debug | True RNG, 96-bit unique ID, CRC unit, firewall protection, Serial Wire Debug (SW-DP) interface. |
Pinout & Package
LQFP48 package (7 × 7 mm, 0.5 mm pitch), 48-pin quad flat pack with exposed thermal pad; RoHS-compliant and ECOPACK2 certified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VSS, VSSA | Power supply and ground | Dual-domain power: VDD/VSS for digital logic; VDDA/VSSA for analog peripherals (ADC/DAC/comp) - enables noise isolation. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15 | General-purpose I/O | 78 total GPIOs (5V tolerant on most); support 16 alternate functions per port including USB, USART, SPI, I2C, timers, TSC. |
| PA11/PA12 | USB D+/D− | Dedicated crystal-less USB 2.0 interface; supports battery charging detection and LPM without external oscillator. |
| PA0, PA1, PA4, PA5, PA6, PA7, PB0, PB1, PC0–PC5, PC13–PC15 | Wakeup inputs | 16 wakeup lines + 3 dedicated standby wakeup pins enable fast, selective low-power exit for sensor-triggered events. |
| NRST | Reset input | Active-low reset with internal pull-up; supports external reset assertion and SW-DP debug-initiated reset. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power architecture | 0.29 µA Standby with 3 wakeup pins and full RAM retention - extends coin-cell battery life to >10 years in periodic-sensing nodes. |
| Crystal-less USB 2.0 | Integrated 48 MHz HSI48 oscillator with self-calibration against USB SOF packets - eliminates external crystal and reduces BOM cost and PCB area. |
| Embedded EEPROM | 6 KB data EEPROM with ECC and endurance >300k cycles - enables reliable parameter storage without external serial EEPROM or Flash wear-leveling firmware. |
| Capacitive sensing controller (TSC) | 24-channel hardware-accelerated touch sensing supporting touchkey, linear, and rotary sensors - offloads CPU and maintains low power during UI interaction. |
| True random number generator | Digital TRNG compliant with NIST SP800-90B; output rate ≥1.5 Mbps - provides entropy for secure boot, key generation, and TLS handshake in constrained devices. |
Applications
| Smart Wearable Sensor Hub | Portable Medical Monitor |
|---|---|
Use Scenario: Continuous ECG/PPG signal acquisition with local preprocessing and BLE/USB data upload. IC Role / Device Role / Timing Role: Central MCU managing analog front-end (ADC/DAC/comparators), USB data streaming, and ultra-low-power sleep scheduling between samples. Use Value: 0.86 µA Stop+RTC mode preserves real-time timestamping while retaining 20 KB RAM for waveform buffers - enabling gap-free monitoring over multi-day periods. | Use Scenario: Handheld blood glucose meter with touch UI, LCD drive, and USB configuration download. IC Role / Device Role / Timing Role: Mixed-signal controller interfacing electrochemical sensor, driving segmented LCD, and handling USB HID-class configuration updates. Use Value: Dual 12-bit DACs generate precise reference voltages for sensor biasing; 24-channel TSC enables intuitive touch-button UI without added components. |
| Industrial Wireless Node | Energy Harvesting Sensor |
Use Scenario: LoRaWAN node collecting temperature/humidity/pressure via I2C sensors and transmitting via SX1276. IC Role / Device Role / Timing Role: Low-power host MCU coordinating sensor reads, data fusion, LoRa modulation, and deep-sleep management. Use Value: 5 µs wakeup from Flash allows rapid response to interrupt-driven sensor events - minimizing active time and maximizing energy efficiency per transmission cycle. | Use Scenario: Solar- or thermal-harvested environmental sensor operating intermittently on µW-scale power budgets. IC Role / Device Role / Timing Role: Primary system controller with adaptive voltage scaling, sub-µA standby, and precise RTC wake-up for scheduled measurements. Use Value: 0.29 µA Standby current with 3 dedicated wakeup pins enables reliable operation even under marginal harvest conditions - reducing minimum required energy per wake cycle. |
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 core/peripherals but LQFP64 package (10×10 mm); adds CAN FD controller and extra I2C/SPI channel. | Requires larger PCB footprint and higher pin count; suited for systems needing CAN bus integration or more peripheral concurrency. | Select when CAN FD or additional communication interfaces are mandatory - not a drop-in replacement due to package and pinout mismatch. |
| STM32L432KCU6 | Cortex-M4F core (100 MHz), FPU, 256 KB Flash, 64 KB SRAM; higher performance but ~2× higher active current (110 µA/MHz vs 93 µA/MHz). | Better for floating-point math (e.g., FFT-based vibration analysis) but less optimal for pure ultra-low-power sensor polling. | Choose when computational throughput outweighs absolute lowest power - especially where DSP algorithms or RTOS scheduling overhead demand M4F capabilities. |
Compared with STM32L072CZT6TR, STM32L073RZT6 offers expanded I/O and CAN FD at the cost of larger size and non-compatible pinout, while STM32L432KCU6 delivers significantly higher compute density and FPU support but trades off sub-µA standby capability and increases active power by ~20%.
Availability
STM32L072CZT6TR is available at Aetrix Electronics and suitable for battery-powered IoT sensors, portable medical monitors, and industrial wireless nodes requiring stable component supply and long-term lifecycle assurance.
Supply support for STM32L072CZT6TR 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 products for industrial, automotive, and consumer markets.
The STM32L0 series targets ultra-low-power embedded applications - specifically engineered for extended battery life in space-constrained, energy-sensitive devices such as wearables, smart meters, and predictive maintenance sensors.
FAQ
What is the maximum operating frequency and corresponding power supply range for STM32L072CZT6TR?
The STM32L072CZT6TR operates up to 32 MHz across its full 1.65–3.6 V supply range. At 32 MHz, it requires ≥3.0 V; below 3.0 V, maximum frequency scales down per dynamic voltage scaling (e.g., 24 MHz at 2.4 V). All timing specifications in the datasheet assume worst-case process/voltage/temperature corners.
Does STM32L072CZT6TR support USB without an external crystal?
Yes - it integrates a 48 MHz HSI48 RC oscillator with automatic calibration against USB Start-of-Frame (SOF) tokens, enabling full-speed USB 2.0 communication without any external crystal or oscillator. This feature is validated per USB-IF compliance tests and documented in Section 3.17.5 of DS10689 Rev 5.
How many I/O pins are 5V tolerant, and which ones are excluded?
78 of the 84 total I/Os are 5V tolerant, excluding PA11/PA12 (USB D+/D−), PB3/JTDO, PB4/JNTRST, PA13/SWDIO, and PA14/SWCLK - these five pins are strictly 3.3 V tolerant and must not be exposed to 5V signals to avoid damage. Full pin-by-pin tolerance status is specified in Table 16 of DS10689 Rev 5.
What is the endurance and data retention specification for the embedded EEPROM?
The 6 KB embedded EEPROM supports ≥300,000 write/erase cycles and guarantees data retention for ≥15 years at 85 °C (or ≥40 years at 25 °C), with built-in ECC for single-bit error correction and double-bit error detection - verified per JEDEC JESD22-A117 reliability testing standards.
STM32L072CZT6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 48-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, SPI, UART/USART, USB
- Peripherals:
- Brown-out Detect/Reset, DMA, POR, PWM, WDT
- Number of I/O:
- 37
- 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):
- 1.65V ~ 3.6V
- Data Converters:
- A/D 10x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L072CZT6TR FAQ
1.How can I place an order for STM32L072CZT6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L072CZT6TR 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 STM32L072CZT6TR reliable?
The price and inventory of STM32L072CZT6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L072CZT6TR is usually 5 days.
3.What payment methods are accepted for STM32L072CZT6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L072CZT6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L072CZT6TR?
STM32L072CZT6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L072CZT6TR 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 STM32L072CZT6TR?
For technical support, including STM32L072CZT6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L072CZT6TR requirements.
6.How does Aetrix verify that STM32L072CZT6TR is sourced from the original manufacturer or authorized distributors?
All STM32L072CZT6TR 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 STM32L072CZT6TR meets industry standards.
7.What is the process for return or replacement of STM32L072CZT6TR?
All STM32L072CZT6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32L072CZT6TR, 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 STM32L072CZT6TR part is unused and in its original packaging.
Return procedure for STM32L072CZT6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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