ATMEGA325-16AJ ATMEL [ATMEL Corporation], ATMEGA325-16AJ Datasheet - Page 273

• Manufacturer Part Number: ATMEGA325-16AJ
• Description: 8-bit Microcontroller with In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

Table 121. Serial Programming Instruction Set (Continued)
Note:
2570A–AVR–09/04
Instruction
Load EEPROM Memory
Page (page access)
Write EEPROM Memory
Page (page access)
Read Lock bits
Write Lock bits
Read Signature Byte
Write Fuse bits
Write Fuse High bits
Write Extended Fuse Bits
Read Fuse bits
Read Fuse High bits
Read Extended Fuse Bits
Read Calibration Byte
Poll RDY/BSY
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
1100 0001
1100 0010
0101 1000
1010 1100
0011 0000
1010 1100
1010 1100
1010 1100
0101 0000
0101 1000
0101 0000
0011 1000
1111 0000
Byte 1
0000 0000
00xx xxaa
00xx xaaa
0000 0000
111x xxxx
000x xxxx
1010 0000
1010 1000
1010 0100
0000 0000
0000 1000
0000 1000
000x xxxx
0000 0000
Byte 2
Instruction Format
/
0000 00bb
0000 0bbb
bbbb bb00
bbbb b000
xxxx xxxx
xxxx xxxx
xxxx xxbb
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
xxxx xxxx
0000 0000
xxxx xxxx
Byte 3
/
/
ATmega325/3250/645/6450
iiii iiii
xxxx xxxx
xxoo oooo
11ii iiii
oooo oooo
iiii iiii
iiii iiii
xxxx xxii
oooo oooo
oooo oooo
oooo oooo
oooo oooo
xxxx xxxo
Byte4
Operation
Load data i to EEPROM memory page
buffer. After data is loaded, program
EEPROM page.
Write EEPROM page at address a:b.
Read Lock bits. “0” = programmed, “1”
= unprogrammed. See Table 107 on
page 256 for details.
Write Lock bits. Set bits = “0” to
program Lock bits. See Table 107 on
page 256 for details.
Read Signature Byte o at address b.
Set bits = “0” to program, “1” to
unprogram. See Table 86 on page 204
for details.
Set bits = “0” to program, “1” to
unprogram. See Table 85 on page 198
for details.
Set bits = “0” to program, “1” to
unprogram. See
257
Read Fuse bits. “0” = programmed, “1”
= unprogrammed. See Table 86 on
page 204 for details.
Read Fuse High bits. “0” = pro-
grammed, “1” = unprogrammed. See
Table 85 on page 198 for details.
Read Extended Fuse bits. “0” = pro-
grammed, “1” = unprogrammed. See
Table 109 on page 257 for details.
Read Calibration Byte
If o = “1”, a programming operation is
still busy. Wait until this bit returns to
“0” before applying another command.
for details.
Table 109 on page
273