8-bit AVR Microcontrollers

Programming the Fuse Low Bits

The algorithm for programming the Fuse Low bits is as follows (refer to Programming the Flash for details on Command and Data loading):

  1. 1.Step A: Load Command “0100 0000”.
  2. 2.Step C: Load Data Low Byte. Bit n = “0” programs and bit n = “1” erases the Fuse bit.
  3. 3.Give WR a negative pulse and wait for RDY/BSY to go high.