STMicroelectronics STM32L082KZU6

Overview

STM32L082KZU6 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller in UFQFPN32 (5×5 mm) package, featuring 192 KB Flash with ECC, 20 KB SRAM, 6 KB EEPROM, USB 2.0 crystal-less interface, 12-bit ADC (1.14 Msps), and dual 12-bit DACs - deployed in battery-powered IoT sensor nodes requiring sub-100 µA/MHz active current and secure firmware updates via AES-128.

For engineers reviewing the STM32L082KZU6 datasheet, STM32L082KZU6 pinout, STM32L082KZU6 application, or STM32L082KZU6 equivalent, key selection criteria include verified 0.86 µA Stop mode + RTC + RAM retention, 5 µs Flash wakeup time, USB LPM support, and 19-channel capacitive touch sensing capability - all validated for industrial-grade operation from –40 °C to +125 °C.

Technical Context

The STM32L082KZU6 integrates a Cortex-M0+ core with MPU, operating up to 32 MHz with 0.95 DMIPS/MHz performance and dynamic voltage scaling across three power ranges. Its clock system combines HSI16 (±1%), HSI48 (self-calibrated for USB), LSE (32 kHz RTC), and PLL - enabling precise timing control for mixed-signal applications.

Low-power architecture includes five operational modes: Run (93 µA/MHz), Low-power Run, Sleep, Stop (0.43 µA), and Standby (0.29 µA), each with configurable wake-up sources including 16 lines, 3 pins, and analog comparators. The interconnect matrix routes peripherals-including USB, dual DACs, AES engine, and TSC-to memory and CPU without bus contention.

Key Specifications

Pinout & Package

STM32L082KZU6 is housed in a 32-pin Ultra-Fine Pitch Quad Flat No-lead (UFQFPN32) package measuring 5×5 mm with 0.5 mm pitch, optimized for compact PCB layouts and automated assembly. Thermal pad on underside enhances heat dissipation in sealed enclosures.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-power MCU applications.

Compared with STM32L072KZU6, the STM32L082KZU6 adds USB, DACs, and 64 KB more Flash at identical package size - making it optimal for feature-rich, battery-constrained endpoints. Versus STM32L432KCU6, it trades computational headroom for significantly lower static current and integrated EEPROM - favoring long-life, low-duty-cycle deployments.

Availability

STM32L082KZU6 is available at Aetrix Electronics and suitable for smart utility metering, wireless sensor nodes, medical wearables, and secure access tokens requiring stable component supply across extended product lifecycles.

Supply support for STM32L082KZU6 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 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 - with the STM32L082KZU6 representing its highest-feature variant in the 32-pin UFQFPN form factor.

FAQ

What is the maximum operating frequency and corresponding power consumption in Run mode?

The STM32L082KZU6 operates up to 32 MHz with dynamic voltage scaling. At 32 MHz and 3.3 V supply, typical Run mode current is 93 µA/MHz (≈2.98 mA total), measured with code executing from Flash memory and peripherals idle. This value scales linearly with clock frequency and is validated per DS10688 Rev 7 Table 27.

Does the STM32L082KZU6 support USB without an external crystal?

Yes - it features a crystal-less USB 2.0 Full-Speed interface using the internally calibrated 48 MHz RC oscillator (HSI48), which achieves ±0.25% accuracy after factory calibration. This eliminates the need for an external 48 MHz crystal or oscillator, reducing BOM count and PCB area.

How many I/O pins are 5V tolerant, and what is their safe operating voltage range?

34 of the 40 fast I/Os are 5V tolerant when VDD is ≥2.0 V, per DS10688 Section 6.3.13. These pins accept input voltages up to 5.5 V regardless of VDD level, enabling direct interfacing with legacy 5V logic or sensors without level shifters - confirmed by absolute maximum ratings in Table 20.

What is the endurance and data retention specification for the integrated EEPROM?

The 6 KB data EEPROM is rated for 100,000 write/erase cycles and guarantees 20 years of data retention at 55 °C (DS10688 Table 51). It includes ECC for single-bit error correction and sector protection against unintended writes - eliminating need for external EEPROM in data-logging applications.