Datasheet

ATmega48/88/168 Automotive [DATASHEET]
7530K–AVR–07/14
258
Table 25-17. Serial Programming Instruction Set
Instruction
Instruction Format
OperationByte 1 Byte 2 Byte 3 Byte4
Programming enable 1010 1100 0101 0011 xxxx xxxx xxxx xxxx
Enable serial programming after
RESET goes low.
Chip erase 1010 1100 100x xxxx xxxx xxxx xxxx xxxx Chip erase EEPROM and flash.
Read program memory 0010 H000 000a aaaa bbbb bbbb oooo oooo
Read H (high or low) data o from
program memory at word address
a:b.
Load program memory page 0100 H000 000x xxxx xxbb bbbb iiii iiii
Write H (high or low) data i to
program memory page at word
address b. Data low byte must be
loaded before data high byte is
applied within the same address.
Write program memory page 0100 1100 000a aaaa bbxx xxxx xxxx xxxx
Write program memory page at
address a:b.
Read EEPROM memory 1010 0000 000x xxaa bbbb bbbb oooo oooo
Read data o from EEPROM memory
at address a:b.
Write EEPROM memory 1100 0000 000x xxaa bbbb bbbb iiii iiii
Write data i to EEPROM memory at
address a:b.
Load EEPROM memory
page ( page access)
1100 0001 0000 0000 0000 00bb iiii iiii
Load data i to EEPROM memory
page buffer. After data is loaded,
program EEPROM page.
Write EEPROM memory
page ( page access)
1100 0010 00xx xxaa bbbb bb00 xxxx xxxx Write EEPROM page at address a:b.
Read lock bits 0101 1000 0000 0000 xxxx xxxx xxoo oooo
Read lock bits. “0” = programmed, “1”
= unprogrammed. See
Table 25-1 on page 242 for details.
Write lock bits 1010 1100 111x xxxx xxxx xxxx 11ii iiii
Write lock bits. Set bits = “0” to
program lock bits. See
Table 25-1 on page 242 for details.
Read signature byte 0011 0000 000x xxxx xxxx xxbb oooo oooo Read signature byte o at address b.
Write fuse bits 1010 1100 1010 0000 xxxx xxxx iiii iiii
Set bits = “0” to program, “1” to
unprogram. See
Table 21-1 on page 211 for details.
Write fuse high bits 1010 1100 1010 1000 xxxx xxxx iiii iiii
Set bits = “0” to program, “1” to
unprogram. See
Table 21-1 on page 211 for details.
Write extended fuse bits 1010 1100 1010 0100 xxxx xxxx xxxx xxii
Set bits = “0” to program, “1” to
unprogram. See
Table 25-4 on page 243 for details.
Read fuse bits 0101 0000 0000 0000 xxxx xxxx oooo oooo
Read Fuse bits. “0” = programmed,
“1” = unprogrammed. See
Table 21-1 on page 211 for details.
Read fuse high bits 0101 1000 0000 1000 xxxx xxxx oooo oooo
Read fuse high bits. “0” =
programmed, “1” = unprogrammed.
See Table 21-1 on page 211 for
details.
Note: a = address high bits, b = address low bits, H = 0 - low byte, 1 - high byte, o = data out, i = data in, x = don’t
care