Datasheet

200
ATmega323(L)
1457E–11/01
Notes: 1. This command sequence is not required if the seven MSB are correctly set by the previous command sequence (which is
normally the case).
2. Repeat until o = “1”
3. Set bits to “0” to program the corresponding fuse,
“1” to unprogram the fuse.
6c. Write Fuse High byte
0110111_00000000
0110101_00000000
0110111_00000000
xxxxxxx_xxxxxxxx
xxxxxxx_xxxxxxxx
xxxxxxx_xxxxxxxx
(1)
6d. Poll for Fuse Write complete 0110111_00000000 xxxxxox_xxxxxxxx (2)
6e. Load Data Low Byte 0010011_CB11A987 xxxxxxx_xxxxxxxx (3)
6f. Write Fuse Low byte
0110011_00000000
0110001_00000000
0110011_00000000
xxxxxxx_xxxxxxxx
xxxxxxx_xxxxxxxx
xxxxxxx_xxxxxxxx
(1)
6g. Poll for Fuse Write complete 0110011_00000000 xxxxxox_xxxxxxxx (2)
7a. Enter Lock Bit Write 0100011_00100000 xxxxxxx_xxxxxxxx
7b. Load Data Byte 0010011_11654321 xxxxxxx_xxxxxxxx (4)
7c. Write Lock Bits
0110011_00000000
0110001_00000000
0110011_00000000
xxxxxxx_xxxxxxxx
xxxxxxx_xxxxxxxx
xxxxxxx_xxxxxxxx
(1)
7d. Poll for Lock Bit Write complete 0110011_00000000 xxxxxox_xxxxxxxx (2)
8a. Enter Fuse/Lock Bit Read 0100011_00000100 xxxxxxx_xxxxxxxx
8b. Read Fuse High Byte
0111110_00000000
0111111_00000000
xxxxxxx_xxxxxxxx
xxxxxxx_IHxxGFED
8c. Read Fuse Low Byte
0110010_00000000
0110011_00000000
xxxxxxx_xxxxxxxx
xxxxxxx_CBxxA987
8d. Read Lock Bits
0110110_00000000
0110111_00000000
xxxxxxx_xxxxxxxx
xxxxxxx_xx654321
(5)
8e. Read Fuses and Lock Bits
0111110_00000000
0110010_00000000
0110110_00000000
0110111_00000000
xxxxxxx_xxxxxxxx
xxxxxxx_oooooooo
xxxxxxx_oooooooo
xxxxxxx_oooooooo
(5)
fuse high byte
fuse low byte
lock bits
9a. Enter Signature Byte Read 0100011_00001000 xxxxxxx_xxxxxxxx
9b. Load Address Byte 0000011_bbbbbbbb xxxxxxx_xxxxxxxx
9c. Read Signature Byte
0110010_00000000
0110011_00000000
xxxxxxx_xxxxxxxx
xxxxxxx_oooooooo
10a. Enter Calibration Byte Read 0100011_00001000 xxxxxxx_xxxxxxxx
10b. Load Address Byte 0000011_bbbbbbbb xxxxxxx_xxxxxxxx
10c. Read Calibration Byte
0110110_00000000
0110111_00000000
xxxxxxx_xxxxxxxx
xxxxxxx_oooooooo
11a. Load No Operation Command
0100011_00000000
0110011_00000000
xxxxxxx_xxxxxxxx
xxxxxxx_xxxxxxxx
Table 71. JTAG Programming Instruction Set (Continued)
Instruction TDI sequence TDO sequence Notes