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STMicroelectronics STM32L071KZT6
- Part No.:
- STM32L071KZT6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 32-LQFP
- Datasheet:
-
STM32L071KZT6.pdf
- Description:
- IC MCU 32BIT 192KB FLASH 32LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,699
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Product details
Overview
STM32L071KZT6 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller in LQFP32 package, featuring 192 KB Flash, 20 KB SRAM, 6 KB EEPROM with ECC, 12-bit ADC (1.14 Msps), and operation down to 1.65 V. It delivers 0.95 DMIPS/MHz performance at up to 32 MHz and supports 78 I/Os (5V tolerant), targeting battery-powered IoT sensors and portable medical devices.
For engineers reviewing the STM32L071KZT6 datasheet, STM32L071KZT6 pinout, STM32L071KZT6 application, or STM32L071KZT6 equivalent, key selection criteria include standby current (0.29 µA), RTC + RAM retention in Stop mode (0.86 µA), 5 µs Flash wakeup time, and dual ultra-low-power comparators with wake-up capability.
Technical Context
The STM32L071KZT6 integrates a Cortex-M0+ core with MPU, dynamic voltage scaling, and multiple clock sources including HSI16 (±1%), LSE (32 kHz RTC), and MSI (65 kHz–4.2 MHz). Its low-power architecture enables five operational modes-Run, Sleep, Low-power Run, Stop, and Standby-with configurable wake-up sources across 16 lines and 3 pins.
Analog subsystem includes a 12-bit ADC with up to 16 channels, two independent comparators supporting window mode and voltage-level detection down to 1.65 V, and internal temperature sensor with factory calibration. Memory protection includes sector-based Flash write/erase lock and ECC on both Flash and EEPROM.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M0+, 32-bit, up to 32 MHz - enables deterministic real-time control with minimal power overhead |
| Flash / SRAM / EEPROM | 192 KB Flash (ECC, read-while-write), 20 KB SRAM, 6 KB EEPROM (ECC) - supports robust firmware updates and nonvolatile data logging |
| Supply Voltage | 1.65 V to 3.6 V - compatible with single-cell Li-ion, Li-SOCl₂, and coin-cell batteries without external regulators |
| Low-Power Modes | 0.29 µA Standby (3 wake pins), 0.86 µA Stop + RTC + 20 KB RAM retention - extends multi-year battery life in always-on sensing nodes |
| ADC Performance | 12-bit, 1.14 Msps, 16-channel, min. supply 1.65 V - captures high-fidelity analog signals directly from sensors without level-shifting |
| Timers & Peripherals | 11 timers (including LPTIM, RTC, SysTick), 4x USART (2 ISO 7816/IrDA), 3x I2C (2 SMBus/PMBus), 6x SPI - enables complex protocol stacks and precise timing in constrained environments |
| I/O Capability | 25 fast I/Os (all 5V tolerant), 78 total I/Os across full family - simplifies interface to legacy peripherals and industrial logic without level translators |
Pinout & Package
LQFP32 (7 × 7 mm, 0.8 mm pitch) package with 32-pin quad flat lead frame. RoHS-compliant, ECOPACK2 certified.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Power supply (core & I/O) | Primary 1.65–3.6 V input; decoupling required per datasheet Section 6.1.6 |
| VSS | Ground reference | Dedicated digital ground pin; must be connected to PCB ground plane with low-inductance path |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; accepts 1.65–3.6 V logic levels; supports external reset button or supervisor IC |
| PA0–PA15 | General-purpose I/O (Port A) | Configurable as GPIO, ADC1_IN0–IN15, TIM2_CH1–CH4, USART2_TX/RX - primary analog/digital interface bank |
| PA13/PA14 | SWD debug interface | Serial Wire Debug (SW-DP): SWDIO and SWCLK - enables programming and real-time debugging without JTAG pins |
| PC13/PC14/PC15 | RTC backup domain | Supports LSE oscillator (PC14/PC15) and tamper/wakeup (PC13); retains function in Standby mode with VBAT |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power BOR | 5 selectable brownout thresholds (1.62–2.94 V) - prevents erratic operation during battery sag without external supervisor |
| Pre-programmed bootloader | Supports UART, I2C, SPI - enables field firmware updates without debugger hardware or dedicated programmer |
| Memory ECC | On-chip ECC for Flash and EEPROM - detects/corrects single-bit errors, critical for long-term reliability in unattended deployments |
| Dual ultra-low-power comparators | Operate down to 1.65 V with window mode and interrupt generation - replaces discrete comparator circuits in battery-monitoring and threshold-detection applications |
| 7-channel DMA controller | Offloads CPU for ADC, USART, SPI, timers - reduces active time and power consumption during data acquisition/transmission |
Applications
| Smart Utility Metering | Wearable Health Monitor |
|---|---|
Use Scenario: Battery-powered gas/water meter with pulse counting, pressure sensing, and LoRaWAN telemetry. IC Role / Device Role / Timing Role: Main system controller managing sensor acquisition, secure data encryption, RTC-corrected timestamping, and low-duty-cycle radio transmission. Use Value: 0.29 µA Standby current and 5 µs Flash wakeup enable >10-year battery life while maintaining sub-second response to flow events. |
Use Scenario: Disposable ECG patch with dry electrodes, motion compensation, and Bluetooth LE reporting. IC Role / Device Role / Timing Role: Signal acquisition hub performing analog front-end conditioning, 12-bit ADC sampling, motion artifact filtering, and BLE packet assembly. Use Value: 12-bit ADC operating at 1.65 V and dual comparators enable direct sensor interfacing without boost converters, reducing BOM cost and size. |
| Industrial Predictive Maintenance Sensor | Asset Tracking Beacon |
Use Scenario: Vibration and temperature node mounted on motor housing, transmitting FFT features via NB-IoT every 6 hours. IC Role / Device Role / Timing Role: Real-time vibration analysis engine using DMA-accelerated ADC + timer-triggered FFT, with RTC-scheduled deep-sleep cycles. Use Value: 0.86 µA Stop mode + RTC + 20 KB RAM retention preserves context and calibration data across sleep intervals without capacitor backup. |
Use Scenario: GPS-denied indoor asset tag using UWB ranging and BLE proximity alerts in warehouse logistics. IC Role / Device Role / Timing Role: Low-latency event processor detecting UWB anchor pulses and generating BLE advertising packets on motion or proximity trigger. Use Value: 78 5V-tolerant I/Os simplify integration with diverse UWB transceivers and sensor hubs, eliminating level-shifter components. |
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 |
|---|---|---|---|
| STM32L072KZT6 | Same package and memory, but adds AES-128 and public-key crypto accelerator | Required for secure firmware OTA or TLS handshake in cloud-connected endpoints | Select when cryptographic acceleration is mandatory; otherwise identical power/performance profile |
| STM32L031K6T6 | Reduced resources: 32 KB Flash, 8 KB SRAM, no EEPROM, fewer peripherals (no LPUART, only 1x I2C) | Suitable for simpler sensor nodes with basic UART telemetry and no data logging | Choose for cost-sensitive designs where 192 KB Flash and EEPROM are unnecessary |
Compared with STM32L071KZT6, STM32L072KZT6 adds security hardware at identical power and footprint, while STM32L031K6T6 trades memory and peripheral count for lower unit cost-enabling tiered product families without redesigning PCB layout.
Availability
STM32L071KZT6 is available at Aetrix Electronics and suitable for smart utility metering, wearable health monitors, industrial predictive maintenance sensors, and asset tracking beacons requiring stable component supply across multi-year production cycles.
Supply support for STM32L071KZT6 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 management ICs, sensors, and automotive semiconductors since 1987.
The STM32L0 series targets ultra-low-power embedded applications demanding multi-year battery life, robust memory integrity, and rich analog integration-optimized for IoT edge nodes, portable medical devices, and energy-harvesting systems.
FAQ
What is the maximum operating frequency and corresponding power consumption in Run mode?
The STM32L071KZT6 operates up to 32 MHz with 0.95 DMIPS/MHz performance. At 32 MHz and 3.3 V, typical Run-mode current is 93 µA/MHz (≈3.0 mA total), measured with code executing from Flash and peripherals idle. This value scales linearly with clock frequency and supply voltage per datasheet Table 29.
Does STM32L071KZT6 support hardware encryption or secure boot?
No. The STM32L071KZT6 lacks dedicated cryptographic accelerators or secure boot ROM. It provides memory protection unit (MPU) and Flash write/erase protection, but secure firmware validation requires external components or software-based solutions. For hardware crypto, consider STM32L072KZT6 or STM32L4 series.
Can the 12-bit ADC operate reliably below 2.0 V supply?
Yes. The ADC is fully specified down to 1.65 V supply, with 1.14 Msps conversion rate and ±1 LSB INL maintained across the full 1.65–3.6 V range. Internal reference (VREFINT) remains stable, and calibration values stored in system memory compensate for process variation at low voltages.
Is SWD debugging supported on all LQFP32 pins, and what are the minimum connections required?
Yes. SWD is implemented on PA13 (SWDIO) and PA14 (SWCLK); no additional pins are required. A 3-pin connection (SWDIO, SWCLK, GND) suffices for full debug and programming access. NRST is optional but recommended for reliable reset control during firmware upload.
STM32L071KZT6 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
- Peripherals:
- Brown-out Detect/Reset, DMA, I2S, 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
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L071KZT6 FAQ
1.How can I place an order for STM32L071KZT6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L071KZT6 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 STM32L071KZT6 reliable?
The price and inventory of STM32L071KZT6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L071KZT6 is usually 5 days.
3.What payment methods are accepted for STM32L071KZT6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L071KZT6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L071KZT6?
STM32L071KZT6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L071KZT6 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 STM32L071KZT6?
For technical support, including STM32L071KZT6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L071KZT6 requirements.
6.How does Aetrix verify that STM32L071KZT6 is sourced from the original manufacturer or authorized distributors?
All STM32L071KZT6 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 STM32L071KZT6 meets industry standards.
7.What is the process for return or replacement of STM32L071KZT6?
All STM32L071KZT6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L071KZT6, 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 STM32L071KZT6 part is unused and in its original packaging.
Return procedure for STM32L071KZT6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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