8
42073BS-MCU Wireless-09/14
3.4.5 Port G2
The port G2 is not connected to a pin in the ATmega2564/1284/644RFR2. The
alternate pin function AMR (asynchronous automated meter reading input to timer 2) is
not available.
3.4.6 Port G5
The port G5 is not connected to a pin in the ATmega2564/1284/644RFR2. The
alternate pin function OC0B (output compare channel of 8-Bit timer 0) is not available.
3.4.7 RSTON
The RSTON reset output signaling the internal reset state is not connected to a pin in
the ATmega2564/1284/644RFR2.
3.5 Configuration summary
According to the application requirements a variable memory size allows to optimize
current consumption and leakage current.
Table 3-1 Memory Configuration
Device Flash EEPROM SRAM
ATmega2564RFR2 256KB 8KB 32KB
ATmega1284RFR2 128KB 4KB 16KB
ATmega644RFR2 64KB 2KB 8KB
Package and associated pin configuration are the same for all devices providing full
functionality to the application.
Table 3-2 System Configuration
Device Package GPIO Serial IF ADC channel
ATmega2564RFR2 QFN48 33 2 USART, SPI, TWI 7
ATmega1284RFR2 QFN48 33 2 USART, SPI, TWI 7
ATmega644RFR2 QFN48 33 2 USART, SPI, TWI 7
The devices are optimized for applications based on the ZigBee and the IEEE 802.15.4
specification. Having application stack, network layer, sensor interface and an excellent
power control combined in a single chip many years of operation should be possible.
Table 3-3 Application Profile
Device Application
ATmega2564RFR2 Large Network Coordinator / Router for IEEE 802.15.4 / ZigBee Pro
ATmega1284RFR2 Network Coordinator / Router for IEEE 802.15.4
ATmega644RFR2 End node device / network processor
