
8
42073A-MCU Wireless-02/13
ATmega2564/1284/644RFR2
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.
4 Resources
A comprehensive set of development tools and application notes, and datasheets are
available for download on http://www.atmel.com.
5 About Code Examples
This documentation contains simple code examples that briefly show how to use
various parts of the device. Be aware that not all C compiler vendors include bit
definitions in the header files and interrupt handling in C is compiler dependent. Please
confirm with the C compiler documentation for more details.
These code examples assume that the part specific header file is included before
compilation. For I/O registers located in extended I/O map, "IN", "OUT", "SBIS", "SBIC",
"CBI", and "SBI" instructions must be replaced with instructions that allow access to
extended I/O. Typically "LDS" and "STS" combined with "SBRS", "SBRC", "SBR", and
"CBR".
6 Data Retention and Endurance
6.1 Data Retention
The data retention of the non-volatile memories is
over 10 years at 125°C
over 100 years at 25°C
6.2 Endurance of the Code Memory (FLASH)
The endurance of the code memory (FLASH) is
125°C – 10,000 Write/Erase cycles
85°C – 25,000 Write/Erase cycles
6.3 Endurance of the Data Memory (EEPROM)
The endurance of the entire data memory (EEPROM) is
125°C – 20,000 Write/Erase cycles
85°C – 50,000 Write/Erase cycles
25°C – 100,000 Write/Erase cycles