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Atmel AVR ATmega644P microcontroller module with USB UART and RS485 transceiver.
Crumb644 V1.1 AVR ATmega Module


Description
Crumb644 V1.1 is a versatile and very compact/small (just 50x18mm size!) microcontroller module with the ATmega644P microcontroller, CP2102 USB UART converter and RS485 transceiver. All microcontroller signals are available on pin headers. A selectable XTAL crystal is included.
The module is shipped without preassembled pinn headers, since everybody has different preferences or requirements. A Connector Kit with a suitable set of pin headers and receptacles can be ordered optionally.

You can find further information in the Infosheet.
Technical Details
- ATmega644P (64k Flash, 4k SRAM, 4k EEPROM)
- Interfaces: 2xUSART, SPI, I2C/TWI, 32x IO Pins
- Peripherals:2x 8 Bit / 1x 16 Bit Timer mit PWM/Capture/Compare, 8ch. 10 Bit ADC, Analog Comparator, Watchdog, Brownout, Sleep/Powerdown Mode
- 6-Pin ISP interface with standard pinout
- CP2102 USB UART converter at USART0
- SN75ALS176 RS485 transceiver at USART1
- selctable XTAL crystal frequency
- Connectors: 2x 20-pin with all processor signals, 1x 5-pin with USB and RS485 signals, 1x 6-pin ISP, mini USB-B (5-pin)
- 2.54mm (1/10inch) pin grid
- Size: 50.8mm x 17.78mm
Downloads
InfosheetSchematic DiagramATmega644 DatasheetAtmel Studio 7 (incl. Toolchain + Software Framework)CodeVisionAVR C CompilerWe also recommend:
Power-S-501 V1.0
5V/3.3V/2.5V 500mA Step Down Switching Regulator Converter Module with LM2674.
Price: 9.90 EUR(*)
Shipping
We ship world wide with German Post and DHL.

Free shipping above €100 order value (only Germany).
More information.
Payment
PayPal, Wire Transfer. Companies / Institutions in Germany also Invoice. More on this.
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