This firmware is designed for AVR ATMega64A-16 microcontroller. External crystal frequency is UART compatible 14.7456 Mhz.

Contents 1 Version 4.93 1.1 Fuse bits configuration 1.2 Source code 1.3 Firmware binary 2 See also

Version 4.93

Fuse bits configuration

• CKSEL0=1 (unprogrammed)
• CKSEL1=1 (unprogrammed)
• CKSEL2=1 (unprogrammed)
• CKSEL3=1 (unprogrammed) - external high-frequency crystal (f > 8.0 MHz)
• SUT0=1 (unprogrammed)
• SUT1=1 (unprogrammed) - start-up time = 16K CK + 64ms

• BODEN=0 (PROGRAMMED) - brow-out enabled
• BODLEVEL=0 (PROGRAMMED) - brown-out = 4.0V
• BOOTRST=1 (unprogrammed) - boot reset vector disabled
• BOOTSZ0=0 (PROGRAMMED) - not used
• BOOTSZ1=0 (PROGRAMMED) - not used (boot flash = 4096 words, address = 0x7000)
• EESAVE=0 (PROGRAMMED) - preserve EEPROM

• CKOPT=1 (unprogrammed)
• JTAGEN=1 (unprogrammed) - disable JTAG
• OCDEN=1 (unprogrammed) - disable on-chip debug
• WDTON=1 (unprogrammed) - disable watchdog timer
• M103C=1 (unprogrammed) - disable ATMega103 compatibility

Refer to online fuse bits calculator

Source code

Firmware binary

See also

• Camera Direction Controller
• Optical encoder board
• Optical encoding disks