STM32L486XX datasheet(13/233 Pages) STMICROELECTRONICS

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STM32L486xx

Description

The STM32L486xx devices are the ultra-low-power microcontrollers based on the high-

performance ARM® Cortex®-M4 32-bit RISC core operating at a frequency of up to 80 MHz.

The Cortex-M4 core features a Floating point unit (FPU) single precision which supports all

ARM single-precision data-processing instructions and data types. It also implements a full

set of DSP instructions and a memory protection unit (MPU) which enhances application

security.

The STM32L486xx devices embed high-speed memories (1 Mbyte of Flash memory,

128 Kbyte of SRAM), a flexible external memory controller (FSMC) for static memories (for

devices with packages of 100 pins and more), a Quad SPI flash memories interface

(available on all packages) and an extensive range of enhanced I/Os and peripherals

connected to two APB buses, two AHB buses and a 32-bit multi-AHB bus matrix.

The STM32L486xx devices embed several protection mechanisms for embedded Flash

memory and SRAM: readout protection, write protection, proprietary code readout

protection and Firewall.

The devices offer up to three fast 12-bit ADCs (5 Msps), two comparators, two operational

amplifiers, two DAC channels, an internal voltage reference buffer, a low-power RTC, two

general-purpose 32-bit timer, two 16-bit PWM timers dedicated to motor control, seven

general-purpose 16-bit timers, and two 16-bit low-power timers. The devices support four

digital filters for external sigma delta modulators (DFSDM).

In addition, up to 24 capacitive sensing channels are available. The devices also embed an

integrated LCD driver 8x40 or 4x44, with internal step-up converter.

They also feature standard and advanced communication interfaces.

•

Three I2Cs

•

Three SPIs

•

Three USARTs, two UARTs and one Low-Power UART.

•

Two SAIs (Serial Audio Interfaces)

•

One SDMMC

•

One CAN

•

One USB OTG full-speed

•

One SWPMI (Single Wire Protocol Master Interface)

The STM32L486xx devices embed AES hardware accelerator.

The STM32L486xx operates in the -40 to +85 °C (+105 °C junction), -40 to +105 °C

(+125 °C junction) and -40 to +125 °C (+130 °C junction) temperature ranges from a 1.71 to

3.6 V power supply. A comprehensive set of power-saving modes allows the design of low-

power applications.

Some independent power supplies are supported: analog independent supply input for

ADC, DAC, OPAMPs and comparators, 3.3 V dedicated supply input for USB and up to 14

I/Os can be supplied independently down to 1.08V. A VBAT input allows to backup the RTC

and backup registers.

The STM32L486xx family offers five packages from 64-pin to 144-pin packages.

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