STMicroelectronics STM32L0 series, STM32L081KZT6, 32-bit ARM Cortex-M0+ MCU, 32MHz, 192KB Flash, 20K x 8 RAM, 6K x 8 EEPROM, 1.65V ~ 3.6V, -40°C ~ 85°C, 32-LQFP (7x7 mm), surface mount, 25 I/O.
| Parameter | Value |
|---|---|
| Series | STM32L0 |
| Mounting | Surface Mount |
| Oscillator type | Internal |
| Program memory type | FLASH |
| Voltage - supply (Vcc (Vdd)) | 1.65V ~ 3.6V |
| Operating temperature | -40°C ~ 85°C (TA) |
| Speed | 32MHz |
| Package | Tray |
| RAM size | 20K x 8 |
| Core size | 32-Bit Single-Core |
| EEPROM size | 6K x 8 |
| Peripherals | Brown-out Detect/Reset, DMA, I²S, POR, PWM, WDT |
| Connectivity | I²C, IrDA, LINbus, SPI, UART/USART |
| Number of i (O) | 25 |
| Core processor | ARM® Cortex®-M0+ |
| Case | 32-LQFP |
| Data converters | A/D 10x12b |
| Program memory size | 192KB (192K x 8) |
On the peripheral side you get a 10-channel 12-bit ADC, DMA for memory-to-peripheral transfers without CPU intervention, a PWM timer, a watchdog, and brown-out detection. The 25 I/O lines in the 32-LQFP package (7x7 mm) are adequate for a sensor node with a LoRa module, a few analog inputs, and a couple of control outputs.
ROHS3 compliant, so it passes EU assembly restrictions without exemption paperwork.
Yes, it is ROHS3 compliant, meaning it meets the EU RoHS directive including the exemption for lead in solder (exemption 7c-I). No conflict with standard lead-free reflow profiles.
The closest functional peer within the STM32 family is the STM32L151CBU6A, which upgrades the core to a Cortex-M3 at the same 32 MHz clock, adds USB and capacitive sensing, and provides 16-channel 12-bit ADC plus dual 12-bit DAC. However, the L151 draws more current in active and sleep modes — the L081 is the better choice if every microamp counts in a battery-powered design. The STM32L071KZT6 is pin-compatible and software-compatible but has 128 KB Flash instead of 192 KB.