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| PartNumber | STM32L031G4U6 | STM32L031G4U6TR | STM32L031G6U3 |
| Description | ARM Microcontrollers - MCU 16/32-BITS MICROS | ARM Microcontrollers - MCU Ultra-low-power ARM Cortex-M0+ MCU with 16-Kbytes Flash, 32 MHz CPU | ARM Microcontrollers - MCU 16/32-BITS MICROS |
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Product Category | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU |
| Series | STM32L031G4 | STM32L031G4 | STM32L0 |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Product Type | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU |
| Factory Pack Quantity | 2940 | 3000 | 2940 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
| Tradename | STM32 | - | ARM; Cortex |
| Mounting Style | - | SMD/SMT | SMD/SMT |
| Package / Case | - | UFQFPN-28 | UFQFPN-28 |
| Core | - | ARM Cortex M0+ | ARM Cortex M0+ |
| Data Bus Width | - | 32 bit | 32 bit |
| Maximum Clock Frequency | - | 32 MHz | 32 MHz |
| Program Memory Size | - | 16 kB | 32 kB |
| Data RAM Size | - | 8 kB | 8 kB |
| ADC Resolution | - | 12 bit | 12 bit |
| Number of I/Os | - | 21 I/O | 23 I/O |
| Operating Supply Voltage | - | 1.8 V to 3.6 V | 1.65 V to 3.6 V |
| Minimum Operating Temperature | - | - 40 C | - 40 C |
| Maximum Operating Temperature | - | + 85 C | + 125 C |
| Product | - | MCU | MCU |
| Program Memory Type | - | Flash | Flash |
| Data RAM Type | - | SRAM | SRAM |
| Data ROM Size | - | 1 kB | 1 kB |
| Data ROM Type | - | EEPROM | EEPROM |
| Interface Type | - | I2C, SPI, USART | I2C, I2S, SPI, USART |
| Number of ADC Channels | - | 10 Channel | 10 Channel |
| Supply Voltage Max | - | 3.6 V | 3.6 V |
| Supply Voltage Min | - | 1.8 V | 1.65 V |
| Watchdog Timers | - | Watchdog Timer, Windowed | Watchdog Timer, Windowed |