Order No.: crumbx32a4-1.0
Availability: on stock

Price:  24.32 EUR

incl. VAT excl. shipping

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Atmel AVR ATxmega32A4U microcontroller module with USB UART, micro-sd-card, voltage regulator.

CrumbX32A4 AVR Xmega Module

CrumbX32A4 - Atmel AVR ATxmega32A4U microcontroller module with USB UART, micro-sd-card, voltage regulator.


Crumb32A4 V1.0 is a versatile and very compact/small (just 56x18mm size!) microcontroller module with the ATxmega32A4 microcontroller, 3.3V LDO voltage regulator, CP2102 USB UART converter and a micro-sd-card header/slot. All microcontroller signals are available on pin headers. A selectable XTAL crystal is included.

The module is shipped without preassembled pin headers, since everybody has different preferences or requirements.

You can find further information in the Infosheet.

Technical Details

  • ATxmega32A4U (32k+4k Flash, 4k SRAM, 1k EEPROM)
  • Interfaces: 5xUSART, 2xSPI, 2xI2C/TWI, 34x IO Pins
  • Peripherals: DMA, event system, 5x 8/16 Bit timer mit PWM/capture/compare, 12ch. 12 Bit ADC, 2ch. 12 Bit DAC, 2x analog comparator, RTC timer, watchdog, brownout, sleep/powerdown mode
  • internal USB controller
  • 6-Pin PDI interface with standard pinout, JTAG
  • CP2102 USB UART converter at USART0/PORTE
  • selectable XTAL crystal frequency, or 32kHz watch crystal
  • onboard 3.3V LDO voltage regulator
  • Connectors: 2x 32-pin with all processor signals, USB and RS485 Signalen, 1x 6-pin ISP, mini USB-B (5-pin), micro SD-card
  • 2.54mm (1/10inch) pin grid
  • Size: 55.88mm x 17.78mm


  • Infosheet
  • Schematic Diagram
  • ATxmega32A4U Datasheet
  • ATxmegaAU Manual
  • Atmel Studio 7 (incl. Toolchain + Software Framework)
  • CodeVisionAVR C Compiler
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