Datasheet

DS10690 Rev 6 11/144
STM32L071xx Description
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2 Description
The access line ultra-low-power STM32L071xx microcontrollers incorporate the high-
performance Arm
®
Cortex
®
-M0+ 32-bit RISC core operating at a 32 MHz frequency, a
memory protection unit (MPU), high-speed embedded memories (up to
192 Kbytes of Flash
program memory,
6 Kbytes of data EEPROM and 20 Kbytes of RAM) plus an extensive
range of enhanced I/Os and peripherals.
The STM32L071xx 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 STM32L071xx devices offer several analog features, one 12-bit ADC with hardware
oversampling, two ultra-low-power comparators, several timers, one low-power timer
(LPTIM), four general-purpose 16-bit timers and two basic timer, 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 STM32L071xx devices embed standard and advanced communication
interfaces: up to three I2Cs, two SPIs, one I2S, four USARTs, a low-power UART
(LPUART), .
The STM32L071xx also include a real-time clock and a set of backup registers that remain
powered in Standby mode.
The ultra-low-power STM32L071xx 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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