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| PartNumber | STM32L031F6P6 | STM32L031F4P6 | STM32L031F4P3 |
| Description | ARM Microcontrollers - MCU 16/32-BITS MICROS | ARM Microcontrollers - MCU 16/32-BITS MICROS | ARM Microcontrollers - MCU 16/32-BITS MICROS |
| Manufacturer | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Product Category | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU |
| RoHS | Y | Y | Y |
| Mounting Style | SMD/SMT | SMD/SMT | SMD/SMT |
| Package / Case | TSSOP-20 | TSSOP-20 | TSSOP-20 |
| Series | STM32L031F6 | STM32L031F4 | STM32L031F4 |
| Core | ARM Cortex M0+ | ARM Cortex M0+ | ARM Cortex M0+ |
| Data Bus Width | 32 bit | 32 bit | 32 bit |
| Maximum Clock Frequency | 32 MHz | 32 MHz | 32 MHz |
| Program Memory Size | 32 kB | 16 kB | 16 kB |
| Data RAM Size | 8 kB | 8 kB | 8 kB |
| ADC Resolution | 12 bit | 12 bit | 12 bit |
| Number of I/Os | 15 I/O | 15 I/O | 38 I/O |
| Operating Supply Voltage | 1.8 V to 3.6 V | 1.8 V to 3.6 V | 1.65 V to 3.6 V |
| Minimum Operating Temperature | - 40 C | - 40 C | - 40 C |
| Maximum Operating Temperature | + 85 C | + 85 C | + 125 C |
| Product | MCU | MCU | MCU |
| Program Memory Type | Flash | Flash | Flash |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics |
| Data RAM Type | SRAM | SRAM | SRAM |
| Data ROM Size | 1 kB | 1 kB | 1 kB |
| Data ROM Type | EEPROM | EEPROM | EEPROM |
| Interface Type | I2C, LPUART, SPI, USART | I2C, LPUART, SPI, USART | I2C , SPI , UART |
| Analog Supply Voltage | 1.65 V to 3.6 V | 1.65 V to 3.6 V | 1.65 V to 3.6 V |
| I/O Voltage | 1.65 V to 3.6 V | 1.65 V to 3.6 V | - |
| Number of ADC Channels | 10 Channel | 10 Channel | 10 Channels |
| Number of Timers/Counters | 4 x 16 bit | 4 x 16 bit | 8 x 16 bit |
| Processor Series | STM32L0 | STM32L0 | STM32L0 |
| Product Type | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU | ARM Microcontrollers - MCU |
| Factory Pack Quantity | 1480 | 1480 | 1480 |
| Subcategory | Microcontrollers - MCU | Microcontrollers - MCU | Microcontrollers - MCU |
| Supply Voltage Max | 3.6 V | 3.6 V | 3.6 V |
| Supply Voltage Min | 1.8 V | 1.8 V | 1.65 V |
| Tradename | STM32 | STM32 | STM32 |
| Watchdog Timers | Watchdog Timer, Windowed | Watchdog Timer, Windowed | Watchdog Timer |
| Unit Weight | - | - | 0.006737 oz |