Datasheet

Description STM32L031x4/6
10/126 DS10668 Rev 6
2 Description
The access line ultra-low-power STM32L031x4/6 family incorporates the high-performance
Arm
®
Cortex
®
-M0+ 32-bit RISC core operating at a 32 MHz frequency, high-speed
embedded memories (up to
32 Kbytes of Flash program memory, 1 Kbytes of data
EEPROM and 8 Kbytes of RAM) plus an extensive range of enhanced I/Os and peripherals.
The STM32L031x4/6 devices provide high power efficiency for a wide range of
performance. It is achieved with a large choice of internal and external clock sources, an
internal voltage adaptation and several low-power modes.
The STM32L031x4/6 devices offer several analog features, one 12-bit ADC with hardware
oversampling, two ultra-low-power comparators, several timers, one low-power timer
(LPTIM), three general-purpose 16-bit timers, one RTC and one SysTick which can be used
as timebases. They also feature two watchdogs, one watchdog with independent clock and
window capability and one window watchdog based on bus clock.
Moreover, the STM32L031x4/6 devices embed standard and advanced communication
interfaces: one I2C, one SPI, one USART, and a low-power UART (LPUART).
The STM32L031x4/6 also include a real-time clock and a set of backup registers that
remain powered in Standby mode.
The ultra-low-power STM32L031x4/6 devices operate from a 1.8 to 3.6 V power supply
(down to 1.65 V at power down) with BOR and from a 1.65 to 3.6 V power supply without
BOR option. They are available in the -40 to +125 °C temperature range. A comprehensive
set of power-saving modes allows the design of low-power applications.
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