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STMicroelectronics STM32L072CZY6TR
- Part No.:
- STM32L072CZY6TR
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 49-UFBGA, WLCSP
- Datasheet:
-
STM32L072CZY6TR.pdf
- Description:
- IC MCU 32BIT 192KB FLASH 49WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:5,661
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Product details
Overview
STM32L072CZY6TR from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller featuring 192 KB Flash, 20 KB SRAM, 6 KB EEPROM with ECC, USB 2.0 (crystal-less), and dual 12-bit DACs - deployed in battery-powered IoT sensor nodes requiring long runtime and analog signal conditioning.
For engineers reviewing the STM32L072CZY6TR datasheet, STM32L072CZY6TR pinout, STM32L072CZY6TR application, or STM32L072CZY6TR equivalent, key selection criteria include standby current (0.29 µA), 12-bit ADC performance (1.14 Msps, 16-channel), USB crystal-less operation, 5V-tolerant I/O count (78 pins), and integrated true RNG for secure firmware updates.
Technical Context
The STM32L072CZY6TR 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.
Power management includes five BOR thresholds, programmable voltage detector (PVD), and three distinct low-power modes (Stop, Standby, Low-power Run) with configurable RAM retention (up to 20 KB) and wakeup via 16 lines or 3 dedicated pins - optimized for intermittent sensing and event-driven wakeups in energy-constrained systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M0+, 32 MHz max - delivers 0.95 DMIPS/MHz for deterministic real-time control in compact firmware footprints. |
| Flash / EEPROM | 192 KB Flash with ECC + 6 KB EEPROM with ECC - enables robust firmware storage and parameter retention across 100k write/erase cycles. |
| RAM | 20 KB SRAM with parity - supports large sensor buffers and stack depth for RTOS-based applications without external memory. |
| ADC | 12-bit, 1.14 Msps, 16-channel - captures fast transients (e.g., vibration, audio envelope) at full resolution down to 1.65 V supply. |
| DAC | 2 × 12-bit buffered DACs - generate precision analog outputs (e.g., sensor bias, calibration references) down to 1.8 V supply. |
| USB | USB 2.0 crystal-less, battery charging detection - eliminates external crystal and simplifies BOM for portable devices with USB-C power negotiation. |
| Low-power Standby | 0.29 µA with 3 wakeup pins - extends coin-cell battery life to >10 years in periodic wake-and-measure applications. |
Pinout & Package
STM32L072CZY6TR uses a 49-ball WLCSP (3.294 × 3.258 mm) package with 37 user I/Os, optimized for space-constrained wearables and medical patches. Pin functions align with STM32L072xZ series pin definition per DS10689 Rev 5 Table 16.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VDDA, VDDIO2 | Power supply inputs | Separate analog/digital domains enable noise isolation; VDDIO2 supports 1.8–3.6 V I/O voltage scaling. |
| VSS, VSSA | Ground returns | Dedicated analog ground minimizes coupling into ADC/DAC paths; split return improves SNR. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD2, PH0–PH1 | General-purpose I/Os | 78 total I/Os (73 5V-tolerant); support up to 24 capacitive sensing channels for touch UI without external IC. |
| PA2/PA3, PA11/PA12 | USART2 TX/RX, USB D+/D− | Hardware USB interface with built-in transceiver and crystal-less PLL - no external oscillator required. |
| PA4–PA7 | ADC1_IN0–IN3, DAC_OUT1/OUT2 | Direct analog routing enables simultaneous acquisition and output - ideal for closed-loop sensor compensation. |
| NRST | Active-low reset input | Internal pull-up; accepts 1.65–3.6 V logic - compatible with standard open-drain reset supervisors. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power Stop mode | 0.43 µA with 16 wakeup lines - enables motion-triggered wake from deep sleep using accelerometer interrupts. |
| True Random Number Generator (RNG) | FIPS-compliant entropy source - provides cryptographically secure keys for TLS handshakes in constrained-edge devices. |
| Capacitive Sensing Controller (TSC) | 24-channel, hardware-accelerated - reduces CPU load by >90% vs software-based touch detection on 8-bit MCUs. |
| Pre-programmed USB/USART bootloader | Factory-loaded, read-protected - allows field firmware updates without debug interface access or external programmer. |
| Firewall protection | Memory protection unit (MPU) + secure boot - prevents unauthorized code execution and enforces trusted firmware chain. |
Applications
| Smart Wearable Sensor Hub | Industrial Wireless Node |
|---|---|
Use Scenario: Continuous ECG/PPG monitoring in wrist-worn health patch with Bluetooth LE telemetry. IC Role / Device Role / Timing Role: Main controller managing analog front-end (ADC/DAC), capacitive touch UI, USB charging detection, and RTC-scheduled data uploads. Use Value: 0.29 µA standby current extends CR2032 battery life beyond 18 months; dual DACs calibrate photodiode bias in real time. | Use Scenario: Battery-powered vibration sensor node in predictive maintenance system reporting to LoRaWAN gateway. IC Role / Device Role / Timing Role: Signal acquisition engine sampling MEMS accelerometer at 1 kHz, performing FFT preprocessing, and waking radio only on anomaly detection. Use Value: 5 µs wakeup from Flash enables sub-millisecond response to impact events; 20 KB RAM holds 2-second waveform buffer. |
| Medical Diagnostic Handheld | Energy Harvesting Remote Monitor |
Use Scenario: Portable blood glucose meter with electrochemical strip interface and LCD display. IC Role / Device Role / Timing Role: Precision analog controller driving constant-current excitation, measuring nanoamp-level currents via 12-bit ADC, and managing EEPROM-stored calibration coefficients. Use Value: 6 KB EEPROM with ECC ensures 10-year retention of factory calibration data; 12-bit ADC achieves ±1 LSB INL at 10 ksps. | Use Scenario: Solar-harvested environmental sensor logging temperature/humidity every 5 minutes to SD card. IC Role / Device Role / Timing Role: Power-aware coordinator entering Stop mode between readings, using LSE-calibrated RTC for accurate interval timing, and waking peripherals only during active measurement. Use Value: 0.86 µA Stop+RTC+20KB RAM mode preserves context across 5-minute intervals while consuming <1.5 µW average power. |
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 | LQFP64 package (64-pin), adds CAN FD controller and higher I/O count (51 GPIO) | Better suited for industrial control panels requiring CAN bus integration and larger peripheral expansion | Select when CAN interface or >37 I/Os are mandatory; WLCSP footprint advantage lost |
| STM32L432KCU6 | Cortex-M4F core, 256 KB Flash, FPU, no USB crystal-less, higher active current (81 µA/MHz) | Preferred for floating-point math (e.g., motor control algorithms) where USB crystal dependency is acceptable | Choose for computational intensity over ultra-low-power USB convenience |
Compared with STM32L072CZY6TR, STM32L073RZT6 trades miniaturization for CAN and I/O scalability, while STM32L432KCU6 sacrifices standby efficiency (0.29 µA → 0.35 µA) and crystal-less USB to gain DSP capability - making the CZY6TR optimal for size- and battery-limited USB-connected edge sensors.
Availability
STM32L072CZY6TR is available at Aetrix Electronics and suitable for smart wearables, wireless sensor networks, portable medical diagnostics, and energy harvesting systems requiring stable component supply across multi-year production cycles.
Supply support for STM32L072CZY6TR 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, and sensors for industrial, automotive, and consumer markets.
The STM32L0 series targets ultra-low-power embedded applications - specifically engineered for battery-operated devices demanding multi-year runtime, secure firmware updates, and integrated analog peripherals without external support components.
FAQ
What is the maximum operating frequency and core type of the STM32L072CZY6TR?
The STM32L072CZY6TR features an Arm Cortex-M0+ core rated for up to 32 MHz operation, delivering 0.95 DMIPS per MHz. It supports dynamic voltage scaling to maintain performance across 1.65–3.6 V supply range, with verified timing closure at full speed under worst-case junction temperature (125 °C) per DS10689 Section 6.3.1.
Does the STM32L072CZY6TR support crystal-less USB operation?
Yes - it integrates a self-calibrating 48 MHz HSI48 RC oscillator with USB-specific trimming, enabling full-speed USB 2.0 communication without external crystal or oscillator. This is validated in Section 3.17.5 and electrical characteristics Table 48 of DS10689 Rev 5, with ±0.25% accuracy over temperature and voltage.
How many I/O pins are available, and what is their voltage tolerance?
The WLCSP49 package provides 37 user I/O pins, of which 78 total I/Os are defined across the STM32L072xZ family - 73 pins are 5V-tolerant (including all GPIOs except analog inputs). This is confirmed in Section 2.1 and Table 2 of DS10689 Rev 5, enabling direct interfacing with legacy 5V logic without level shifters.
What low-power modes does the STM32L072CZY6TR support, and what is the lowest current consumption?
It supports Standby (0.29 µA, 3 wakeup pins), Stop (0.43 µA, 16 wakeup lines), and Stop+RTC+20KB RAM (0.86 µA) modes. These values are measured at 25 °C, 3.0 V, with all clocks disabled except LSE, and verified in Tables 37–38 of DS10689 Rev 5 Section 6.3.37.
STM32L072CZY6TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 49-UFBGA, WLCSP
- 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:
- 40
- 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 13x12b; D/A 2x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L072CZY6TR FAQ
1.How can I place an order for STM32L072CZY6TR through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L072CZY6TR 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 STM32L072CZY6TR reliable?
The price and inventory of STM32L072CZY6TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L072CZY6TR is usually 5 days.
3.What payment methods are accepted for STM32L072CZY6TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L072CZY6TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L072CZY6TR?
STM32L072CZY6TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L072CZY6TR 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 STM32L072CZY6TR?
For technical support, including STM32L072CZY6TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L072CZY6TR requirements.
6.How does Aetrix verify that STM32L072CZY6TR is sourced from the original manufacturer or authorized distributors?
All STM32L072CZY6TR 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 STM32L072CZY6TR meets industry standards.
7.What is the process for return or replacement of STM32L072CZY6TR?
All STM32L072CZY6TR units undergo pre-shipment inspection (PSI). If there is an issue with STM32L072CZY6TR, 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 STM32L072CZY6TR part is unused and in its original packaging.
Return procedure for STM32L072CZY6TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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