Datasheet

Description STM32L052x6 STM32L052x8
10/143 DocID025936 Rev 8
2 Description
The ultra-low-power STM32L052x6/8 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 (
64 Kbytes of Flash program memory, 2 Kbytes of data
EEPROM and
8 Kbytes of RAM) plus an extensive range of enhanced I/Os and peripherals.
The STM32L052x6/8 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 STM32L052x6/8 devices offer several analog features, one 12-bit ADC with hardware
oversampling, one DAC, two ultra-low-power comparators, several timers, one low-power
timer (LPTIM), three general-purpose 16-bit timers and one 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 STM32L052x6/8 devices embed standard and advanced communication
interfaces: up to two I2C, two SPIs, one I2S, two 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 STM32L052x6/8 also include a real-time clock and a set of backup registers that
remain powered in Standby mode.
The ultra-low-power STM32L052x6/8 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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