This firmware is designed for AVR ATMega88 microcontroller. External crystal frequency is 8.000 Mhz.

Contents 1 Firmware version 2.0 1.1 Fuse bits configuration 1.2 Source code 1.3 Firmware binary 2 See also

Firmware version 2.0

Fuse bits configuration

• CKSEL0=1 (unprogrammed)
• CKSEL1=1 (unprogrammed)
• CKSEL2=1 (unprogrammed)
• CKSEL3=0 (PROGRAMMED) - for low-frequency crystal (f <= 8.0 MHz)

• SUT0=1 (unprogrammed)
• SUT1=1 (unprogrammed) - start-up time = 16K CK + 64ms

• CKOUT=1 (unprogrammed)
• CKDIV8=1 (unprogrammed) - CONSIDER programming this fuse to reduce power consumption 4 to 6 times lower

• BODLEVEL=1 (unprogrammed) -
• BODLEVEL=1 (unprogrammed) -
• BODLEVEL=1 (unprogrammed) -

• EESAVE=1 (unprogrammed) - do not preserve EEPROM

• WDTON=1 (unprogrammed) - disable watchdog timer
• DWEN=1 (unprogrammed)

• RSTDISBL=1 (unprogrammed) - make sure it is unprogrammed (unchecked)

• BOOTRST=1 (unprogrammed) - boot reset vector disabled
• BOOTSZ0=0 (PROGRAMMED) - not used
• BOOTSZ1=0 (PROGRAMMED) - not used (boot flash = 4096 words, address = 0x7000)

Refer to online fuse bits calculator

Source code

Firmware binary

See also

• Side Panel Interface
• Side panel in a rear section
• Primary Power Controller