STM32L052K6U6TR                  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), highspeed 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.

STM32L052K6U6TR                    Features

? Ultra-low-power platform

– 1.65 V to 3.6 V power supply

– -40 to 125 °C temperature range

– 0.27 μA Standby mode (2 wakeup pins)

– 0.4 μA Stop mode (16 wakeup lines)

– 0.8 μA Stop mode + RTC + 8-Kbyte RAM

retention

– 88 μA/MHz in Run mode

– 3.5 μs wakeup time (from RAM)

– 5 μs wakeup time (from Flash memory)

? Core: Arm? 32-bit Cortex?-M0+ with MPU

– From 32 kHz up to 32 MHz max.

– 0.95 DMIPS/MHz

? Memories

– Up to 64-Kbyte Flash memory with ECC

– 8-Kbyte RAM

– 2 Kbytes of data EEPROM with ECC

– 20-byte backup register

– Sector protection against R/W operation

? Up to 51 fast I/Os (45 I/Os 5V tolerant)

? Reset and supply management

– Ultra-safe, low-power BOR (brownout

reset) with 5 selectable thresholds

– Ultra-low-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 factorytrimmed RC (+/- 1%)

– Internal low-power 37 kHz RC

– Internal multispeed low-power 65 kHz to

4.2 MHz RC

– Internal self calibration of 48 MHz RC for

USB

– PLL for CPU clock

STM32L052K6U6TR                        Applications

? Gas/water meters and industrial sensors

? Healthcare and fitness equipment

? Remote control and user interface

? PC peripherals, gaming, GPS equipment

? Alarm system, wired and wireless sensors, video intercom