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

– 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 29 fast I/Os (25 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

– 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

Pre-programmed bootloader

– USART, SPI supported

• Development support

– Serial wire debug supported

• Rich Analog peripherals

– 12-bit ADC 1.14 Msps with 10 channels

(down to 1.65 V)

– 12-bit 1 channel DAC with output buffers

(down to 1.8 V)

– 2x ultra-low-power comparators (window

mode and wake up capability, down to

1.65 V)

• Up to 14 capacitive sensing channels

supporting touchkey, linear and rotary touch

sensors

• 7-channel DMA controller, supporting ADC,

SPI, I2C, USART, DAC, Timers, AES

• 8x peripheral communication interfaces

– 1x USB 2.0 crystal-less, battery charging

detection and LPM

– 2x USART (ISO 7816, IrDA), 1x UART (low

power)

– 3x SPI 16 Mbits/s

– Up to 2x I2C (SMBus/PMBus)

• 9x timers: 1x 16-bit with up to 4 channels, 2x

16-bit with up to 2 channels, 1x 16-bit ultra-lowpower

timer, 1x SysTick, 1x RTC, 1x 16-bit

basic for DAC, and 2x watchdogs

(independent/window)

• CRC calculation unit, 96-bit unique ID

• True RNG and firewall protection

• Hardware Encryption Engine AES 128-bit

• All packages are ECOPACK2

Description

The ultra-low-power STM32L062x8 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 STM32L062x8 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 STM32L062x8 devices offer several analog features, one 12-bit ADC with hardware

oversampling, one DAC, two ultra-low-power comparators, AES, several timers, one lowpower

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 STM32L062x8 devices embed standard and advanced communication

interfaces: up to two I2Cs, one SPI, two USARTs, a low-power UART (LPUART), and a

crystal-less USB. The devices offer up to 14 capacitive sensing channels to simply add

touch sensing functionality to any application.

The STM32L062x8 also include a real-time clock and a set of backup registers that remain

powered in Standby mode.

The ultra-low-power STM32L062x8 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.