Rainbow Electronics ATmega8515L - Manual (Page 192)

192
ATmega8515(L)
2512A–AVR–04/02
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
Table 94. Serial Programming Instruction Set
Instruction
Instruction Format
Operation Byte 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 0000 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 0000 xxxx xxxb 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 0000 aaaa bbb x xxxx xxxx xxxx Write Program Memory Page at
address a:b.
Read EEPROM Memory
1010 0000 00xx xxxa bbbb bbbb oooo oooo Read data o from EEPROM
memory at address a:b.
Write EEPROM Memory
1100 0000 00xx xxxa bbbb bbbb iiii iiii Write data i to EEPROM memory at
address a:b.
Read Lock Bits
0101 1000 0000 0000 xxxx xxxx xxoo oooo Read Lock bits. “0” = programmed,
“1” = unprogrammed. See
Table
81 on page 175 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 81
on page 175 for details.
Read Signature Byte
0011 0000 00xx 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 84 on
page 177 for details.
Write Fuse High Bits
1010 1100 1010 1000 xxxx xxxx iiii iiii Set bits = “0” to program, “1” to
unprogram. See
Table 83 on
page 176 for details.
Read Fuse Bits
0101 0000 0000 0000 xxxx xxxx oooo oooo Read Fuse bits. “0” = programmed,
“1” = unprogrammed. See
Table
84 on page 177 for details.
Read Fuse High Bits
0101 1000 0000 1000 xxxx xxxx oooo oooo Read Fuse high bits. “0” = pro-
grammed, “1” = unprogrammed.
See
Table 83 on page 176 for
details.
Read Calibration Byte 0011 1000 00xx xxxx 0000 0000 oooo oooo Read Calibration Byte