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STMicroelectronics Electronic Components Datasheet

STM32L082 Datasheet

32-bit MCU

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STM32L082KB STM32L082KZ
STM32L082CZ
Ultra-low-power 32-bit MCU Arm®-based Cortex®-M0+, up to 192KB
Flash, 20KB SRAM, 6KB EEPROM, USB, ADC, DACs, AES
Datasheet - production data
Features
Ultra-low-power platform
– 1.65 V to 3.6 V power supply
-40 to 125 °C temperature range
– 0.29 µA Standby mode (3 wakeup pins)
– 0.43 µA Stop mode (16 wakeup lines)
– 0.86 µA Stop mode + RTC + 20-Kbyte RAM
retention
– Down to 93 µA/MHz in Run mode
– 5 µs wakeup time (from Flash memory)
– 41 µA 12-bit ADC conversion at 10 ksps
Core: Arm® 32-bit Cortex®-M0+ with MPU
– From 32 kHz up to 32 MHz max.
– 0.95 DMIPS/MHz
Memories
– Up to 192-Kbyte Flash memory with ECC (2
banks with read-while-write capability)
– 20-Kbyte RAM
– 6 Kbytes of data EEPROM with ECC
– 20-byte backup register
– Sector protection against R/W operation
Up to 40 fast I/Os (34 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 factory-trimmed 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
– USB, USART supported
Development support
– Serial wire debug supported
LQFP32
(7x7 mm)
UFQFPN32
(5x5 mm)
UFQFPN48
(7x7 mm)
Standard and thin
WLCSP36
(2.61x2.88 mm)
Rich Analog peripherals
– 12-bit ADC 1.14 Msps, up to 13 channels (down
to 1.65 V)
– 2 x 12-bit channel DACs 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 19 capacitive sensing channels supporting
touchkey, linear and rotary touch sensors
7-channel DMA controller, supporting ADC, SPI,
I2C, USART, DAC, Timers, AES
11x peripheral communication interfaces
– 1x USB 2.0 crystal-less, battery charging
detection and LPM
– 4x USART (2 with ISO 7816, IrDA), 1x UART
(low power)
– Up to 6x SPI 16 Mbits/s
– 3x I2C (2 with SMBus/PMBus)
11x timers: 2x 16-bit with up to 4 channels, 2x 16-bit
with up to 2 channels, 1x 16-bit ultra-low-power
timer, 1x SysTick, 1x RTC, 2x 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
November 2019
This is information on a product in full production.
DS10688 Rev 6
1/129
www.st.com


STMicroelectronics Electronic Components Datasheet

STM32L082 Datasheet

32-bit MCU

No Preview Available !

Contents
Contents
STM32L082xx
1
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2
Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.1 Device overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
2.2 Ultra-low-power device continuum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
3
Functional overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.1 Low-power modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
3.2 Interconnect matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.3 Arm® Cortex®-M0+ core with MPU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
3.4 Reset and supply management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.4.1 Power supply schemes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.4.2 Power supply supervisor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
3.4.3 Voltage regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.5 Clock management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
3.6 Low-power real-time clock and backup registers . . . . . . . . . . . . . . . . . . . 25
3.7 General-purpose inputs/outputs (GPIOs) . . . . . . . . . . . . . . . . . . . . . . . . . 25
3.8 Memories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.9 Boot modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
3.10 Direct memory access (DMA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.11 Analog-to-digital converter (ADC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.12 Temperature sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
3.12.1 Internal voltage reference (VREFINT) . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.13 Digital-to-analog converter (DAC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
3.14 Ultra-low-power comparators and reference voltage . . . . . . . . . . . . . . . . 29
3.15 Touch sensing controller (TSC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
3.16 AES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
3.17 Timers and watchdogs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
3.17.1 General-purpose timers (TIM2, TIM3, TIM21 and TIM22) . . . . . . . . . . . 31
3.17.2 Low-power Timer (LPTIM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
3.17.3 Basic timer (TIM6, TIM7) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
3.17.4 SysTick timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
2/129
DS10688 Rev 6


Part Number STM32L082
Description 32-bit MCU
Maker STMicroelectronics
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STM32L082 Datasheet PDF






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