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STMicroelectronics STM32L062K8U6
- Part No.:
- STM32L062K8U6
- Manufacturer:
- STMicroelectronics
- Category:
- Microcontrollers
- Package:
- 32-UFQFN Exposed Pad
- Datasheet:
-
STM32L062K8U6.pdf
- Description:
- IC MCU 32BIT 64KB FLASH 32UFQFPN
- Quantity:
- Payment:
- Shipping:
Inventory:2,905
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Product details
Overview
STM32L062K8U6 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller with 64 KB Flash, 8 KB SRAM, and 2 KB EEPROM featuring integrated USB 2.0 (crystal-less), 12-bit ADC (1.14 Msps), 12-bit DAC, AES-128 hardware encryption, and operating voltage range 1.65–3.6 V. It delivers 0.95 DMIPS/MHz performance at up to 32 MHz and supports industrial temperature range (−40 to +125 °C), making it suitable for battery-powered IoT sensor nodes requiring secure, low-power connectivity.
For engineers reviewing the STM32L062K8U6 datasheet, STM32L062K8U6 pinout, STM32L062K8U6 application, or STM32L062K8U6 equivalent, key selection considerations include its crystal-less USB capability, 0.27 µA standby current with two wakeup pins, 88 µA/MHz active power efficiency, and dual ultra-low-power comparators with wake-up functionality down to 1.65 V.
Technical Context
The STM32L062K8U6 integrates an Arm Cortex-M0+ core with Memory Protection Unit (MPU), supporting dynamic voltage scaling and multiple low-power modes including Stop mode with RTC + 8 KB RAM retention (0.8 µA) and Standby mode (0.27 µA). Its clock system includes factory-trimmed 16 MHz HSI, self-calibrating 48 MHz HSI for USB, 32 kHz LSE for RTC, and multispeed MSI (65 kHz–4.2 MHz).
Analog subsystem comprises a 10-channel 12-bit ADC (1.14 Msps, functional down to 1.65 V), single-channel 12-bit DAC with output buffer (down to 1.8 V), two ultra-low-power comparators with window mode and wake-up capability, and a capacitive sensing controller supporting up to 14 channels for touchkey/rotary applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Core | Arm Cortex-M0+ with MPU, 32 MHz max, 0.95 DMIPS/MHz - enables deterministic real-time control in resource-constrained edge devices. |
| Memory | 64 KB Flash with ECC, 8 KB SRAM, 2 KB EEPROM with ECC - ensures firmware integrity and nonvolatile data storage without external components. |
| USB Interface | Crystal-less USB 2.0 full-speed with battery charging detection - eliminates external crystal and reduces BOM cost/PCB area for portable designs. |
| Power Consumption | 0.27 µA Standby (2 wakeup pins), 0.8 µA Stop + RTC + 8 KB RAM - extends battery life to years in intermittently active sensor applications. |
| Analog Peripherals | 12-bit ADC (10 ch, 1.14 Msps), 12-bit DAC (1 ch, buffered), 2x comparators (1.65 V min operation) - supports precision sensing and analog actuation in single-chip systems. |
| Security & Crypto | AES-128 hardware engine, true RNG, 96-bit unique ID, firewall protection - enables secure firmware updates and device authentication in connected endpoints. |
| Operating Range | 1.65–3.6 V supply, −40 to +125 °C - certified for industrial and automotive under-hood environments without derating. |
Pinout & Package
STM32L062K8U6 is packaged in UFQFPN32 (5 × 5 mm, 0.5 mm pitch), a space-efficient, thermally enhanced quad flat no-lead package suitable for compact PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD | Main power supply (1.65–3.6 V) | Primary digital/analog domain input; requires local decoupling for noise-sensitive analog operation. |
| VSS | Ground reference | Dedicated analog/digital ground return; separation improves ADC/DAC SNR in mixed-signal operation. |
| PA0–PA15, PB0–PB11 | General-purpose I/Os (25 tolerant to 5 V) | Configurable as GPIO, alternate functions (USART, SPI, I²C, USB, timers); 5 V tolerance simplifies level-shifting with legacy peripherals. |
| USB_DP / USB_DM | USB 2.0 differential data lines | Crystal-less full-speed interface; internal oscillator calibration eliminates external 48 MHz crystal and matching network. |
| NRST | Active-low reset input | Asynchronous reset with internal pull-up; supports external push-button or supervisor IC assertion. |
| BOOT0 | Boot mode selection | High at reset enables system memory bootloader (USART/SPI); critical for field firmware recovery without debugger. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power architecture | 0.27 µA Standby, 3.5 µs wakeup from RAM - enables sub-second response in energy-harvesting or coin-cell powered systems. |
| Integrated USB 2.0 | Crystal-less full-speed with LPM and battery charge detection - reduces component count and PCB footprint while enabling direct PC/cloud connectivity. |
| Hardware AES-128 + True RNG | Dedicated crypto engine with DMA support and entropy source - offloads encryption from CPU, ensuring deterministic timing for secure OTA updates. |
| Capacitive Sensing Controller (TSC) | 14-channel support for touchkey, linear, and rotary sensors - eliminates external touch controller IC and associated firmware complexity. |
| Dual ultra-low-power comparators | Window mode operation and wake-up from Stop/Standby - enables precise voltage monitoring (e.g., battery threshold detection) with nanowatt quiescent current. |
Applications
| Smart Utility Metering | Wearable Health Monitor |
|---|---|
Use Scenario: Battery-operated gas/water meter with pulse counting, RF telemetry, and tamper detection. IC Role / Device Role / Timing Role: Main system controller managing sensor acquisition (pulse inputs, temperature), AES-encrypted data packaging, and crystal-less USB/RF communication scheduling. Use Value: 0.27 µA Standby current extends 10-year battery life; integrated TSC enables mechanical seal status via capacitive gap sensing. | Use Scenario: Compact ECG/PPG patch continuously sampling biopotentials and transmitting via BLE (using UART-to-BLE bridge). IC Role / Device Role / Timing Role: Analog front-end controller acquiring signals via 12-bit ADC, conditioning with DAC-based biasing, and managing low-power sleep/wakeup cycles synchronized to heart rate. Use Value: 12-bit ADC with 1.14 Msps supports oversampling for noise reduction; 0.8 µA Stop+RTC mode maintains timekeeping during deep sleep between measurements. |
| Industrial Wireless Sensor Node | Secure Access Token |
Use Scenario: LoRaWAN node monitoring vibration, temperature, and humidity in predictive maintenance deployments. IC Role / Device Role / Timing Role: Data aggregator running sensor fusion algorithms, AES-encrypting payloads, and managing LoRa transceiver via SPI with precise timing from LPTIM. Use Value: Hardware AES-128 accelerates encryption without CPU load; 7-channel DMA enables concurrent ADC sampling, SPI transmission, and DAC calibration. | Use Scenario: Physical security token storing cryptographic keys and performing challenge-response authentication. IC Role / Device Role / Timing Role: Secure element co-processor with firewall-protected memory, true RNG for nonce generation, and tamper-detecting comparators monitoring supply/voltage anomalies. Use Value: 2 KB EEPROM with ECC stores keys with error correction; comparators trigger immediate zeroization on voltage glitch or probe attempt. |
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 |
|---|---|---|---|
| STM32L072K8U6 | Same package and pinout; adds 1 MB/s USART with LIN support and 16 KB SRAM (+8 KB) | Better suited for LIN bus integration or larger firmware buffers; identical power profile and peripheral set otherwise | Select when LIN physical layer support or extended RAM for protocol stacks is required. |
| STM32L052K8U6 | Omits USB interface; retains same Flash/RAM/EEPROM and low-power specs | Targeted at cost-sensitive, non-USB applications (e.g., simple sensor nodes with UART/SPI only) | Choose to reduce BOM cost where USB connectivity is unnecessary and footprint compatibility is maintained. |
Compared with STM32L072K8U6, this part trades LIN/extra RAM for identical USB capability and lower cost; versus STM32L052K8U6, it adds crystal-less USB at minimal power penalty-making it optimal for secure, connected edge devices needing minimal external components.
Availability
STM32L062K8U6 is available at Aetrix Electronics and suitable for smart utility metering, wearable health monitors, industrial wireless sensor nodes, and secure access tokens requiring stable component supply across multi-year production cycles.
Supply support for STM32L062K8U6 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, specializing in microcontrollers, power management, sensors, and automotive ICs with strong focus on energy efficiency and industrial reliability.
The STM32L0 series targets ultra-low-power embedded applications, designed specifically for battery-operated and energy-harvesting systems demanding long service life, robust security, and rich analog integration without external support components.
FAQ
What is the minimum operating voltage for the ADC and comparators?
The ADC and both ultra-low-power comparators operate down to 1.65 V supply voltage, enabling accurate signal acquisition even as battery voltage declines in primary-cell applications. This specification is validated per Section 6.3.15 and 6.3.18 of DS10183 Rev 11, with full 12-bit linearity maintained across the entire 1.65–3.6 V range.
Does STM32L062K8U6 support crystal-less USB without external components?
Yes. The device integrates a self-calibrating 48 MHz RC oscillator (HSI48) dedicated to USB, eliminating the need for an external crystal or trimming capacitors. USB full-speed operation is guaranteed per Section 6.3.39, with startup time ≤ 1.5 µs and ±0.25% accuracy over temperature and voltage.
How is flash memory protected against unauthorized readout?
Flash protection is implemented via option bytes that enable readout protection (RDP) Level 1 or 2. At RDP Level 1, debug access is disabled and flash contents become unreadable via SWD; Level 2 permanently locks debug and memory access. These settings are irreversible and enforced by hardware per Section 3.9 and RM0377.
Can the 2 KB EEPROM be used for wear-leveling firmware data logging?
Yes. The 2 KB data EEPROM supports 100,000 write/erase cycles and 20-year data retention at 55 °C (Section 6.3.45). Its sector-based erase and byte-programmable architecture allows implementation of wear-leveling algorithms in firmware to extend effective endurance beyond nominal spec for cyclic logging applications.
STM32L062K8U6 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Package/Case:
- 32-UFQFN Exposed Pad
- 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, I2S, POR, PWM, WDT
- Number of I/O:
- 27
- Program Memory Size:
- 64KB (64K x 8)
- Program Memory Type:
- FLASH
- EEPROM Size:
- 2K x 8
- RAM Size:
- 8K x 8
- Voltage - Supply (Vcc/Vdd):
- 1.65V ~ 3.6V
- Data Converters:
- A/D 10x12b; D/A 1x12b
- Oscillator Type:
- Internal
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
STM32L062K8U6 FAQ
1.How can I place an order for STM32L062K8U6 through Aetrix?
Please submit a Request for Quotation (RFQ) for STM32L062K8U6 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 STM32L062K8U6 reliable?
The price and inventory of STM32L062K8U6 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for STM32L062K8U6 is usually 5 days.
3.What payment methods are accepted for STM32L062K8U6?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for STM32L062K8U6 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for STM32L062K8U6?
STM32L062K8U6 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your STM32L062K8U6 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 STM32L062K8U6?
For technical support, including STM32L062K8U6 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your STM32L062K8U6 requirements.
6.How does Aetrix verify that STM32L062K8U6 is sourced from the original manufacturer or authorized distributors?
All STM32L062K8U6 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 STM32L062K8U6 meets industry standards.
7.What is the process for return or replacement of STM32L062K8U6?
All STM32L062K8U6 units undergo pre-shipment inspection (PSI). If there is an issue with STM32L062K8U6, 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 STM32L062K8U6 part is unused and in its original packaging.
Return procedure for STM32L062K8U6:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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