STM32L496G Discovery

Board Overview

STM32L496G Discovery

Name:

stm32l496g_disco

Vendor:

STMicroelectronics

Architecture:

arm

SoC:

stm32l496xx

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Overview

The STM32L496G Discovery board features an ARM Cortex-M4 based STM32L496AG MCU with a wide range of connectivity support and configurations. Here are some highlights of the STM32L496G Discovery board:

• STM32L496AGI6 microcontroller featuring 1 Mbyte of Flash memory and 320 Kbytes of RAM in an UFBGA169 package

• 1.54 inch 240 x 240 pixel-TFT color LCD with parallel interface

• SAI Audio CODEC, with a stereo headset jack, including analog microphone input

• Stereo digital MEMS microphones

• microSD card connector (card included)

• Camera 8 bit-connector

• 8 Mbit-PSRAM

• IDD measurement

• 64 Mbit-Quad-SPI Flash

• USB OTG FS with Micro-AB connector

• Two types of extension resources:

  • STMod+ and PMOD connectors

  • Compatible Arduino* Uno V3 connectors

• On-board ST-LINK/V2-1 debugger/programmer with SWD connector

• 5 source options for power supply

  • ST-LINK/V2-1 USB connector

  • User USB FS connector

  • VIN from Arduino connector

  • 5 V from Arduino connector

  • USB charger

  • USB VBUS or external source(3.3V, 5V, 7 - 12V)

  • Power management access point

• 8 LEDs

• Reset push button

• 4 direction-joystick with selection

More information about the board can be found at the STM32L496G Discovery website.

Hardware

The STM32L496AG SoC provides the following hardware capabilities:

• Ultra-low-power with FlexPowerControl (down to 108 nA Standby mode and 91 µA/MHz run mode)

• Core: ARM® 32-bit Cortex® -M4 CPU with FPU, frequency up to 80 MHz, 100DMIPS/1.25DMIPS/MHz (Dhrystone 2.1)

• Clock Sources:

  • 4 to 48 MHz crystal oscillator

  • 32 kHz crystal oscillator for RTC (LSE)

  • Internal 16 MHz factory-trimmed RC ( ±1%)

  • Internal low-power 32 kHz RC ( ±5%)

  • Internal multispeed 100 kHz to 48 MHz oscillator, auto-trimmed by LSE (better than ±0.25 % accuracy)

  • Internal 48 MHz with clock recovery

  • 3 PLLs for system clock, USB, audio, ADC

• RTC with HW calendar, alarms and calibration

• LCD 8 x 40 or 4 x 44 with step-up converter

• Up to 24 capacitive sensing channels: support touchkey, linear and rotary touch sensors

• 16x timers:

  • 2x 16-bit advanced motor-control

  • 2x 32-bit and 5x 16-bit general purpose

  • 2x 16-bit basic

  • 2x low-power 16-bit timers (available in Stop mode)

  • 2x watchdogs

  • SysTick timer

• Up to 136 fast I/Os, most 5 V-tolerant, up to 14 I/Os with independent supply down to 1.08 V

• Memories

  • Up to 1 MB Flash, 2 banks read-while-write, proprietary code readout protection

  • 320 KB of SRAM including 64 KB with hardware parity check

  • External memory interface for static memories supporting SRAM, PSRAM, NOR, and NAND memories

  • Quad SPI memory interface

• 4x digital filters for sigma delta modulator

• Rich analog peripherals (independent supply)

  • 3x 12-bit ADC 5 MSPS, up to 16-bit with hardware oversampling, 200 µA/MSPS

  • 2x 12-bit DAC, low-power sample and hold

  • 2x operational amplifiers with built-in PGA

  • 2x ultra-low-power comparators

• 20x communication interfaces

  • USB OTG 2.0 full-speed, LPM and BCD

  • 2x SAIs (serial audio interface)

  • 4x I2C FM+(1 Mbit/s), SMBus/PMBus

  • 5x USARTs (ISO 7816, LIN, IrDA, modem)

  • 1x LPUART

  • 3x SPIs (4x SPIs with the Quad SPI)

  • 2x CAN (2.0B Active) and SDMMC interface

  • SWPMI single wire protocol master I/F

  • IRTIM (Infrared interface)

• 14-channel DMA controller

• True random number generator

• CRC calculation unit, 96-bit unique ID

• Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell*

More information about STM32L496AG can be found in:

• STM32L496AG on www.st.com

• STM32L496 reference manual

Supported Features

The stm32l496g_disco board supports the hardware features listed below.

on-chip / on-board

Feature integrated in the SoC / present on the board.

2 / 2

Number of instances that are enabled / disabled.
Click on the label to see the first instance of this feature in the board/SoC DTS files.

vnd,foo

Compatible string for the Devicetree binding matching the feature.
Click on the link to view the binding documentation.

stm32l496g_disco

/

stm32l496xx

stm32l496g_disco/stm32l496xx target

Type	Location	Description	Compatible
CPU	on-chip	ARM Cortex-M4F CPU1	arm,cortex-m4f
ADC	on-chip	STM32 ADC1 2	st,stm32-adc
CAN	on-chip	STM32 CAN controller2	st,stm32-bxcan
Clock control	on-chip	STM32 RCC (Reset and Clock controller)1	st,stm32-rcc
	on-chip	STM32 HSE Clock1	st,stm32-hse-clock
	on-chip	Generic fixed-rate clock provider3	fixed-clock
	on-chip	STM32 MSI Clock1	st,stm32-msi-clock
	on-chip	STM32 LSE Clock1	st,stm32-lse-clock
	on-chip	STM32L4/L5 main PLL1	st,stm32l4-pll-clock
	on-chip	STM32 Microcontroller Clock Output (MCO)1	st,stm32-clock-mco
Counter	on-chip	STM32 counters9	st,stm32-counter
DAC	on-chip	STM32 family DAC1	st,stm32-dac
DMA	on-chip	STM32 DMA controller (V2)1 1	st,stm32-dma-v2
Flash controller	on-chip	STM32 Family flash controller1	st,stm32-flash-controller
	on-board	STM32 QSPI Flash controller supporting the JEDEC CFI interface1	st,stm32-qspi-nor
GPIO & Headers	on-chip	STM32 GPIO Controller9	st,stm32-gpio
	on-board	GPIO pins exposed on Arduino Uno (R3) headers1	arduino-header-r3
I2C	on-chip	STM32 I2C V2 controller1 3	st,stm32-i2c-v2
Input	on-board	Group of GPIO-bound input keys1	gpio-keys
Interrupt controller	on-chip	ARMv7-M NVIC (Nested Vectored Interrupt Controller)1	arm,v7m-nvic
	on-chip	STM32 External Interrupt Controller1	st,stm32-exti
LED	on-board	Group of GPIO-controlled LEDs1	gpio-leds
Memory controller	on-chip	STM32 Battery Backed RAM1	st,stm32-bbram
MMC	on-chip	STM32 SDMMC Disk Access1	st,stm32-sdmmc
MTD	on-chip	STM32 flash memory1	st,stm32-nv-flash
PHY	on-chip	This binding is to be used by all the usb transceivers which are built-in with USB IP1	usb-nop-xceiv
Pin control	on-chip	STM32 Pin controller1	st,stm32-pinctrl
Power management	on-chip	STM32 power controller1	st,stm32-pwr
PWM	on-chip	STM32 PWM1 8	st,stm32-pwm
QSPI	on-chip	STM32 QSPI Controller1	st,stm32-qspi
Reset controller	on-chip	STM32 Reset and Clock Control (RCC) Controller1	st,stm32-rcc-rctl
RNG	on-chip	STM32 Random Number Generator1	st,stm32-rng
RTC	on-chip	STM32 RTC1	st,stm32-rtc
Sensors	on-chip	STM32 family TEMP node for production calibrated sensors with two calibration temperatures1	st,stm32-temp-cal
	on-chip	STM32 VREF+1	st,stm32-vref
	on-chip	STM32 VBAT1	st,stm32-vbat
Serial controller	on-chip	STM32 USART2 1	st,stm32-usart
	on-chip	STM32 LPUART1	st,stm32-lpuart
	on-chip	STM32 UART2	st,stm32-uart
SMbus	on-chip	STM32 SMBus controller4	st,stm32-smbus
SPI	on-chip	STM32 SPI controller with embedded Rx and Tx FIFOs1 2	st,stm32-spi-fifo
SRAM	on-chip	Generic on-chip SRAM description1	mmio-sram
Timer	on-chip	ARMv7-M System Tick1	arm,armv7m-systick
	on-chip	STM32 timers1 10	st,stm32-timers
	on-chip	STM32 low-power timer (LPTIM)2	st,stm32-lptim
USB	on-chip	STM32 OTGFS controller1	st,stm32-otgfs
Watchdog	on-chip	STM32 watchdog1	st,stm32-watchdog
	on-chip	STM32 system window watchdog1	st,stm32-window-watchdog

Connections and IOs

STM32L496G Discovery Board has 8 GPIO controllers. These controllers are responsible for pin muxing, input/output, pull-up, etc.

For more details please refer to STM32L496G Discovery board User Manual.

Default Zephyr Peripheral Mapping:

• UART_1 TX/RX : PB6/PG10

• UART_2 TX/RX : PA2/PD6 (ST-Link Virtual Port Com)

• LPUART_1 TX/RX : PG7/PG8 (Arduino Serial)

• I2C1 SCL/SDA : PB8/PB7 (Arduino I2C)

• SDMMC_1 D0/D1/D2/D3/CK/CMD: PC8/PC9/PC10/PC11/PC12/PD2

• SPI1 NSS/SCK/MISO/MOSI : PA15/PA5/PB4/PB5 (Arduino SPI)

• USB DM/DP/ID : PA11/PA12/PA10

• I2C_1_SCL : PB8

• I2C_1_SDA : PB7

• PWM_2_CH1 : PA0

• LD2 : PB13

System Clock

STM32L496G Discovery System Clock could be driven by an internal or external oscillator, as well as the main PLL clock. By default the System clock is driven by the PLL clock at 80MHz, driven by 16MHz high speed internal oscillator.

Serial Port

STM32L496G Discovery board has 5 U(S)ARTs. The Zephyr console output is assigned to UART2. Default settings are 115200 8N1.

Programming and Debugging

STM32L496G Discovery board includes an ST-LINK/V2-1 embedded debug tool interface.

Flashing

The board is configured to be flashed using west STM32CubeProgrammer runner, so its installation is required.

Alternatively, OpenOCD or JLink can also be used to flash the board using the --runner (or -r) option:

$ west flash --runner openocd
$ west flash --runner jlink

Applications for the stm32l496g_disco board configuration can be built and flashed in the usual way (see Building an Application and Run an Application for more details).

Flashing an application to STM32L496G Discovery

Connect the STM32L496G Discovery to your host computer using the USB port, then run a serial host program to connect with your Discovery board. For example:

$ minicom -D /dev/ttyACM0

Then, build and flash in the usual way. Here is an example for the Hello World application.

# From the root of the zephyr repository
west build -b stm32l496g_disco samples/hello_world
west flash

You should see the following message on the console:

Hello World! arm

Debugging

You can debug an application in the usual way. Here is an example for the Hello World application.

# From the root of the zephyr repository
west build -b stm32l496g_disco samples/hello_world
west debug