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A-Star 32U4 Prime LV microSD with LCD display

A circuit board compatible with Arduino Leonardo equipped with an Atmega32U4 microcontroller, an SD card reader, a text display 8x2 characters and a step-up / step-down converter. Polol 4009

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ID: 574759

44,58€ gross (23% VAT)
36,24€ net

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Data sheet

Flash memory32kB
EEPROM memory1kB
Number of digital pins26
Number of PWM channels7
Ilość wejść analogowych12
ADC1x 10bit
WiFi/BT moduleNo
Bluetooth moduleNo
GSM/GPRS moduleNie
Logic voltage5 V
MicroSD slotYes
Supply voltage min2 V
Supply voltages max16 V

More info


A-Star Prime LV is a development kit compatible with Arduino Leonardo. The platform is based on the Atmega32U4 microcontroller, with 32 kB flash memory, 2.5 kB SRAM and 1kB EEPROM. The system used supports the USB interface, so you do not need a programmer to use the board. A-star is equipped with 26 ports, of which 7 ports support PWM modulation, and 12 are analog. There are as many as 43 GND pins on the PCB, which makes it easier to connect peripherals. The built-in step-up / step-down converter allows you to supply the system with a voltage from 2 V to 16 V. On the PCB there is also an SD card reader and a buzzer. The set includes an LCD display that can display two lines of 8 characters each. The display can be connected directly to the PCB using a specially prepared connector.


  • Microcontroller: Atmega32U4
  • Operating frequency: 16 MHz
  • Flash memory: 32 kB
  • RAM memory: 2.5 kB
  • EEPROM memory: 1 kB
  • I / O ports: 26
  • PWM ports: 7
  • Analogue ports: 12
  • GND terminals: 43
  • Programmable LED
  • 3 programmable keys
  • Reset button
  • MicroUSB connector
  • SD card reader
  • buzzer
  • LCD display 2x8 characters (HD44780)
  • Advanced protection against back voltage
  • Step-up / Step-down converter
  • Power supply: 2-16 V