STMicroelectronics STM32L071RZT6, ARM Cortex-M0+ 32-bit MCU, 32MHz, 192KB Flash, 20K x 8 SRAM, 6K x 8 EEPROM, 64-LQFP, -40°C to 85°C, 1.65V to 3.6V supply.
| 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, SPI, UART/USART |
| Number of i (O) | 51 |
| Core processor | ARM® Cortex®-M0+ |
| Case | 64-LQFP |
| Data converters | A/D 16x12b |
| Program memory size | 192KB (192K x 8) |
With 51 I/O lines in a 64-LQFP package (10x10 mm), this part offers enough pins for parallel LCD interfaces, multiple UART/I²C/SPI buses, and a bank of GPIOs for keypad or relay control.
The base product number STM32L071 covers multiple density and package variants, which means the supply chain has volume behind it — allocation risk is lower than on a niche end-of-life part.
The STM32L073RZT6 adds a USB 2.0 full-speed interface and a larger LCD driver segment count compared to the STM32L071RZT6. The core, Flash size, SRAM, EEPROM, and package are otherwise identical. If your design does not need USB or a segment LCD, the STM32L071RZT6 is the cost-optimized choice.