Datasheets

ATmega644

ATmega644 Complete
( file size: 6.1MB , 376 pages , revision O , updated: 03/2012 )

ATmega644

ATmega644 Summary
( file size: 705KB , 23 pages , revision O , updated: 03/2012 )

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MCU Wireless chipset for targeted for IEEE802.15.4, ZigBee®, RF4CE, SP100, WirelessHART™ and ISM applications is a bundle of the Atmel AVR ATmega644 microcontroller and Atmel AT86RF230 transceiver radio in the worldwide 2.4GHz frequency band.

The ATmega644 is a low-power CMOS 8-bit microcontroller based on the AVR enhanced RISC architecture. By executing powerful instructions in a single clock cycle, the ATmega644 achieves throughputs approaching 1 MIPS per MHz allowing the system designer to optimize power consumption versus processing speed.

The AT86RF230 is a low-power 2.4GHz transceiver designed for low cost IEEE802.15.4, ZigBee®, RF4CE, SP100, WirelessHART™ and ISM applications. It is a true SPI-to-antenna solution providing a complete radio transceiver interface between the antenna and the microcontroller. All RF-critical components are integrated on a single chip minimizing the number of required external components to the antenna, crystal and decoupling capacitors.

For more in-depth details, see the device's datasheet.

Key Parameters

Parameter
Value

Flash (Kbytes):

64 Kbytes

Max. Operating Freq. (MHz):

20 MHz

Max I/O Pins:

32

SPI:

3

TWI (I2C):

1

UART:

1

ADC channels:

8

ADC Resolution (bits):

10

ADC Speed (ksps):

15

Analog Comparators:

1