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Select all	Attribute	Value
	Brand	STMicroelectronics
	Product Type	Microcontroller
	Series	STM32L031C4
	Package Type	LQFP
	Mount Type	Surface
	Pin Count	48
	Device Core	ARM Cortex M0+
	Data Bus Width	32bit
	Program Memory Size	16kB
	Maximum Clock Frequency	32MHz
	RAM Size	8kB
	Maximum Supply Voltage	3.6V
	Minimum Operating Temperature	-40°C
	Maximum Operating Temperature	85°C
	Width	7.1 mm
	Length	7.1mm
	Number of Programmable I/Os	38
	Analogue Comparators	2
	Maximum Power Dissipation Pd	351mW
	Standards/Approvals	No
	Height	0.6mm
	Minimum Supply Voltage	1.65V
	Instruction Set Architecture	RISC
	Automotive Standard	No
	ADCs	10 x 12 Bit
	Program Memory Type	FLASH
	Number of Timers	1

	Select all
	Brand STMicroelectronics
	Product Type Microcontroller
	Series STM32L031C4
	Package Type LQFP
	Mount Type Surface
	Pin Count 48
	Device Core ARM Cortex M0+
	Data Bus Width 32bit
	Program Memory Size 16kB
	Maximum Clock Frequency 32MHz
	RAM Size 8kB
	Maximum Supply Voltage 3.6V
	Minimum Operating Temperature -40°C
	Maximum Operating Temperature 85°C
	Width 7.1 mm
	Length 7.1mm
	Number of Programmable I/Os 38
	Analogue Comparators 2
	Maximum Power Dissipation Pd 351mW
	Standards/Approvals No
	Height 0.6mm
	Minimum Supply Voltage 1.65V
	Instruction Set Architecture RISC
	Automotive Standard No
	ADCs 10 x 12 Bit
	Program Memory Type FLASH
	Number of Timers 1

Datasheet STM32L031C4T6

COO (Country of Origin):: CN

Ultra-low-power platform

1.65 V to 3.6 V power supply

-40 to 125 °C temperature range

0.25 μA Standby mode (2 wakeup pins)

0.38 μA Stop mode (16 wakeup lines)

0.68 μA Stop mode + RTC + 8 KB RAM retention

Down to 76 μA/MHz in Run mode

5 μs wakeup time (from Flash memory)

41 μA 12-bit ADC conversion (at 10ksps)

Core: ARM® 32-bit Cortex®-M0+

From 32 kHz up to 32 MHz max.

0.95 DMIPS/MHz

Ultra-safe, low-power BOR (brownout reset) with 5 selectable thresholds

Ultralow power POR/PDR

Programmable voltage detector (PVD)

Clock sources

1 to 25 MHz crystal oscillator

32 kHz oscillator for RTC with calibration

High speed internal 16 MHz factory-trimmed RC (+/- 1%)

Internal low-power 37 kHz RC

Internal multispeed low-power 65 kHz to 4.2 MHz RC

PLL for CPU clock

Pre-programmed bootloader

USART, SPI supported

Development support

Serial wire debug supported

Up to 38 fast I/Os (31 I/Os 5V tolerant)

Memories

Up to 32 KB Flash with ECC

8 KB RAM

1 KB of data EEPROM with ECC

20-byte backup register

Sector protection against R/W operation

Rich Analogue peripherals

12-bit ADC 1.14 Msps up to 10 channels (down to 1.65 V)

2x ultra-low-power comparators (window mode and wake up capability, down to 1.8 V)

7-channel DMA controller, supporting ADC, SPI, I2C, USART, Timers

5x peripherals communication interface

1x USART (IrDA), 1x UART (low power)

1x SPI 16 Mbits/s

1x I2C (SMBus/PMBus)

8x timers: 1x 16-bit with up to 4 channels, 2x 16-bit with up to 2 channels, 1x 16-bit ultra-low-power timer, 1x SysTick, 1x RTC and 2x watchdogs (independent/window)

CRC calculation unit, 96-bit unique ID

Units	Per unit
10 - 95	Kr. 23,338
100 - 245	Kr. 22,742
250 - 495	Kr. 22,124
500 +	Kr. 21,576

STMicroelectronics, 32 bit ARM Cortex M0+, STM32L031C4 Microcontroller, 32 MHz, 16kB FLASH, 48-Pin LQFP

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