October 2017
DocID030906 Rev 2
1/78
1
UM2271
User manual
Discovery kit with STM32L4R9AI MCU
Introduction
The 32L4R9IDISCOVERY kit is a complete demonstration and development platform for the
STMicroelectronics Arm
®
Cortex
®
-M4 core-based STM32L4R9AI microcontroller.
Leveraging the innovative ultra-low power oriented features, 640 Kbytes of embedded RAM,
graphics performance (Chrom-ART Accelerator™) and DSI controller offered by the
STM32L4R9AI, the 32L4R9IDISCOVERY kit enables users to easily prototype applications
with state-of-the-art energy efficiency, as well as providing stunning audio and graphics
rendering with direct support for an AMOLED DSI round display. For even more user-
friendliness, the on-board ST-LINK/V2-1 debugger provides out-of-the-box programming
and debugging capabilities.
The STM32L4R9AI microcontroller features four I2Cs, five USARTs, one ULP UART, three
SPIs, two SAIs, one SDIO, one USB 2.0 full-speed OTG, two CANs, one FMC parallel
synchronous interface, one 12-bit ADC, one 12-bit DAC, two ULP analog comparators, two
op amps, one 2 data-lane DSI display, one digital filter for sigma delta modulator and SWP
interface, two Octo-SPI interfaces, 8- to 14-bit camera interface, one touch sensing
controller interface, JTAG and SWD debugging support.
This Discovery board offers everything required for users to get started quickly and develop
applications easily.The hardware features on the board help to evaluate the following
peripherals: USB OTG FS, microSD™ card, 8-bit camera interface, 16-Mbit PSRAM, PMOD
and STMod+ connectors, IDD measurement, full-duplex I2S with an audio codec and stereo
headset jack including an analog microphone, DFSDM with a pair of MEMS digital
microphones on board, 512-Mbit Octo-SPI Flash memory device, I2C extension connector,
1.2" AMOLED display using a one data-lane DSI interface with a capacitive touch panel.
The Arduino™ compatible connectors expand the functionality with a wide choice of
specialized shields. The integrated ST-LINK/V2-1 provides an embedded in-circuit
debugger and programmer for the STM32 MCU.
Pictures are not contractual
Figure 1. 32L4R9IDISCOVERY top view
Figure 2. 32L4R9IDISCOVERY bottom view
