DocID027351 Rev 3 9/100
UM1855 Overview
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1 Overview
1.1 Features
• STM32L476ZGT6 microcontroller with 1-Mbyte Flash memory and 128-Kbyte RAM
• four power supply options: power jack, ST-LINK/V2-1 USB connector, USB OTG FS
connector, daughterboard
• microcontroller supply voltage: 3.3 V or range from 1.71 V to 3.6 V
• two MEMS digital microphones
• two stereo audio headphones jack outputs with independent audio content
• slot for microSD card supporting SD, SDHC, SDXC
• 4-Gbyte microSD card bundled
• 16-Mbit (1M x 16 bit) SRAM device
• 128-Mbit (8M x 16 bit) NOR Flash memory device
• 256-Mbit Quad-SPI Flash memory device with double transfer rate (DTR) support
• RF-EEPROM with I²C bus
• EEPROM supporting 1 MHz I²C-bus communication speed
• RS-232 port configurable for communication or MCU flashing
• IrDA transceiver
• USB OTG FS Micro-AB port
• CAN 2.0A/B-compliant port
• joystick with four-way controller and selector
• reset and wake-up / tamper buttons
• touch-sensing button
• light-dependent resistor (LDR)
• potentiometer
• coin battery cell for power backup
• LCD glass module daughterboard (MB979) with 40x8-segment LCD driven directly by
STM32L476ZGT6
• 2.8-inch 320x240 dot-matrix color TFT LCD panel with resistive touchscreen
• smartcard connector and SWP support
• NFC transceiver connector
• connector for ADC input and DAC output
• power-metering demonstration with dual-channel sigma-delta modulator
• PT100 thermal sensor with dual-channel sigma-delta modulator
• MCU current consumption measurement circuit
• access to comparator and operational amplifier of STM32L476ZGT6
• extension connector for motor control module
• JTAG/SWD, ETM trace debug support, user interface through USB virtual COM port,
embedded ST-LINK/V2-1 debug and flashing facility
• extension connector for daughterboard
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