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STMicroelectronics STM32L072KZT6
- Part No.:
- STM32L072KZT6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
STM32L072KZT6.pdf
- Description:
- IC MCU 32BIT 192KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,440
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Product details
Overview
STM32L072KZT6 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 for battery-powered sensor nodes and portable medical devices.
For engineers reviewing the STM32L072KZT6 datasheet, STM32L072KZT6 pinout, STM32L072KZT6 application, or STM32L072KZT6 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 STM32L072KZT6 integrates a Cortex-M0+ core with MPU, supporting dynamic voltage scaling and multiple low-power modes (Stop, Standby, Low-power Run); its clock system includes factory-trimmed 16 MHz HSI, self-calibrating 48 MHz HSI48 for USB, and 32 kHz LSE for RTC calibration.
Analog subsystem comprises two buffered 12-bit DACs (operable down to 1.8 V), a 12-bit ADC with up to 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.
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 constrained power budgets. |
| 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 storage. |
| Power Modes | 0.29 µA Standby (3 wakeup pins), 0.86 µA Stop+RTC+20KB RAM retention - extends coin-cell battery life to multi-year operation. |
| ADC | 12-bit, 1.14 Msps, 16-channel, min supply 1.65 V - captures high-fidelity sensor signals (e.g., thermistors, strain gauges) directly at low voltage. |
| DAC | 2× 12-bit buffered outputs, operational down to 1.8 V - drives analog actuators or reference voltages without external op-amps. |
| USB | USB 2.0 full-speed, crystal-less, battery charging detection - eliminates external crystal and simplifies BOM for portable USB-peripheral designs. |
| I/O | 78 GPIOs, 72 5V-tolerant - interfaces safely with legacy 5V logic and industrial sensors without level shifters. |
Pinout & Package
LQFP32 (7 × 7 mm, 0.8 mm pitch) package with exposed thermal pad; RoHS-compliant, ECOPACK2 certified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD, VSS | Power supply and ground | Dual VDD/VSS pairs ensure stable core and I/O rail decoupling; supports single-supply operation from 1.65–3.6 V. |
| PA0–PA15, PB0–PB15, PC0–PC15, PD0–PD15, PH0–PH1 | General-purpose I/O | 78 total GPIOs; 72 support 5V tolerance - enables direct interfacing with industrial sensors and legacy peripherals. |
| PA11/PA12 | USB D+/D− | Crysal-less USB interface - eliminates external 48 MHz crystal and associated load capacitors, reducing BOM cost and board area. |
| PA0 | ADC1_IN0 / TSC_CH1 | Shared analog input and touch-sensing channel - allows simultaneous sensor acquisition and capacitive button detection on same pin. |
| NRST | Active-low reset | Programmable reset threshold and glitch filtering - ensures robust reset behavior in noisy industrial environments. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power standby | 0.29 µA with 3 wakeup pins enabled - enables decade-scale battery life in wireless sensor endpoints. |
| Crystal-less USB | Integrated 48 MHz HSI48 with self-calibration against LSE - removes timing component, reduces PCB layout complexity and cost. |
| Embedded EEPROM | 6 KB data EEPROM with ECC - stores calibration coefficients, device IDs, or user settings with guaranteed 100k write cycles and 20-year retention. |
| Capacitive sensing | 24-channel TSC supporting touchkey, linear, and rotary sensors - enables intuitive HMI without external ICs or firmware overhead. |
| True hardware RNG | Entropy source compliant with NIST SP800-90B - provides cryptographically secure keys for TLS handshakes and secure boot in IoT edge nodes. |
Applications
| Wearable Health Monitor | Smart Gas Meter |
|---|---|
Use Scenario: Continuous ECG/PPG signal acquisition and BLE transmission in wrist-worn devices powered by CR2032 coin cell. IC Role / Device Role / Timing Role: Main MCU handling analog front-end digitization (ADC), real-time waveform processing, USB charging management, and low-power timer-based sleep scheduling. Use Value: 0.29 µA standby and 5 µs wakeup minimize energy per measurement cycle, extending battery life beyond 2 years. | Use Scenario: Battery-operated ultrasonic gas flow meter with pressure/temperature compensation and LoRaWAN backhaul. IC Role / Device Role / Timing Role: System controller managing ultrasonic transducer drivers, precision ADC sampling, RTC-corrected timestamping, and secure firmware updates. Use Value: Integrated 6 KB EEPROM stores calibration tables and metrology constants; 125 °C rating ensures reliability in outdoor meter enclosures. |
| Industrial Wireless Sensor Node | Portable Diagnostic Device |
Use Scenario: IP67-rated vibration/temperature node using LoRa or NB-IoT, deployed in factory machinery with 10-year maintenance cycles. IC Role / Device Role / Timing Role: Primary processor executing sensor fusion (accelerometer + temp), AES-128 encryption, and adaptive duty cycling via ultra-low-power timer (LPTIM). Use Value: 0.86 µA Stop mode + RTC + full RAM retention enables precise event-triggered wakeups without data loss between transmissions. | Use Scenario: Handheld blood glucose or coagulation analyzer requiring FDA-grade accuracy, USB-C charging, and clinical data export. IC Role / Device Role / Timing Role: Safety-critical controller managing electrochemical sensor biasing, dual DAC-driven reference generation, and tamper-proof audit logging. Use Value: Dual 12-bit DACs (buffered, 1.8 V min) generate stable, ripple-free reference voltages for analog front-end precision; true RNG supports cryptographic integrity. |
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, memory, and peripherals but adds CAN 2.0B controller and higher-temp grade (–40 to +125 °C same); LQFP64 package. | Required where industrial fieldbus integration (CAN) or additional I/O count (>78) is needed. | Select when CAN bus connectivity or expanded peripheral routing is mandatory; not drop-in due to package and pinout change. |
| STM32L432KCU6 | Cortex-M4F core, 256 KB Flash, 64 KB SRAM, no EEPROM; higher performance (80 MHz), floating-point unit, but higher active current (81 µA/MHz vs 93 µA/MHz). | Suitable for sensor fusion or audio preprocessing where DSP capability outweighs EEPROM need and power budget allows. | Choose for computationally intensive tasks (e.g., FFT-based vibration analysis); trade EEPROM and ultra-low standby (0.29 µA) for FPU and larger memory. |
Compared with STM32L072KZT6, STM32L073RZT6 adds CAN and I/O count at the cost of larger footprint and non-pin-compatible layout, while STM32L432KCU6 trades EEPROM and sub-µA standby for M4F performance and FPU-making it better for algorithm-heavy edge AI but less optimal for pure battery longevity.
Availability
STM32L072KZT6 is available at Aetrix Electronics and suitable for wearable health monitors, smart utility meters, industrial wireless sensor nodes, and portable diagnostic devices requiring stable component supply across long-lifecycle deployments.
Supply support for STM32L072KZT6 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 demanding multi-year battery life, secure firmware execution, and rich analog integration - optimized for IoT edge nodes, portable medical tools, and energy-harvesting systems.
FAQ
Does STM32L072KZT6 support USB device mode without an external crystal?
Yes. The part integrates a self-calibrating 48 MHz HSI48 RC oscillator synchronized to the 32 kHz LSE, enabling full-speed USB 2.0 device operation without external crystal or load capacitors - confirmed in DS10689 Rev 5 Section 3.17.5 and Table 48.
What is the minimum operating voltage for the 12-bit ADC and DACs?
The 12-bit ADC operates down to 1.65 V supply, and both 12-bit DACs function with output buffers enabled down to 1.8 V - specified in DS10689 Rev 5 Sections 3.11 and 3.13, and validated in Tables 64 and 67 under "Operating conditions".
How many GPIOs are 5V tolerant, and which pins support capacitive sensing?
72 of the 78 GPIOs are 5V tolerant; capacitive sensing is supported on up to 24 channels across PA0–PA7, PB0–PB13, PC0–PC7, and PH0–PH1 - detailed in DS10689 Rev 5 Table 9 and Section 3.15, with pin-specific mapping in Table 16.
Is the 6 KB EEPROM field-programmable and ECC-protected?
Yes. The 6 KB data EEPROM supports byte/word/row erase and program operations, includes hardware ECC for single-bit correction and double-bit detection, and guarantees 100,000 write cycles with 20-year data retention - documented in DS10689 Rev 5 Sections 3.8 and Table 54.
STM32L072KZT6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 32-LQFP
- Series:
- STM32L0
- Packaging:
- Tray
- 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:
- 25
- 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:
STM32L072KZT6 FAQ
1.How can I place an order for STM32L072KZT6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L072KZT6 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 STM32L072KZT6 reliable?
The price and inventory of STM32L072KZT6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L072KZT6 is usually 5 days.
3.What payment methods are accepted for STM32L072KZT6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L072KZT6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L072KZT6?
STM32L072KZT6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L072KZT6 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 STM32L072KZT6?
For technical support, including STM32L072KZT6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L072KZT6 requirements.
6.How does Aetrix verify that STM32L072KZT6 is sourced from the original manufacturer or authorized distributors?
All STM32L072KZT6 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 STM32L072KZT6 meets industry standards.
7.What is the process for return or replacement of STM32L072KZT6?
All STM32L072KZT6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L072KZT6, 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 STM32L072KZT6 part is unused and in its original packaging.
Return procedure for STM32L072KZT6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
STM32L072KZT6 Tags
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