Datasheet

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STM32L072xx Description
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2 Description
The ultra-low-power STM32L072xx microcontrollers incorporate the connectivity power of
the universal serial bus (USB 2.0 crystal-less) with 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 STM32L072xx 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 STM32L072xx devices offer several analog features, one 12-bit ADC with hardware
oversampling, two DACs, 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 STM32L072xx devices embed standard and advanced communication
interfaces: up to three I2Cs, two SPIs, one I2S, four USARTs, a low-power UART
(LPUART), and a crystal-less USB. The devices offer up to 24 capacitive sensing channels
to simply add touch sensing functionality to any application.
The STM32L072xx also include a real-time clock and a set of backup registers that remain
powered in Standby mode.
The ultra-low-power STM32L072xx 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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