ATmega32(L)
Table 116. JTAG Programming Instruction Set (Continued)
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
Instruction
TDI sequence
TDO sequence
xxxxxxx_xxxxxxxx
xxxxxxx_xxxxxxxx
Notes
10a. Enter Calibration Byte Read
10b. Load Address Byte
10c. Read Calibration Byte
0100011_00001000
0000011_bbbbbbbb
0110110_00000000
0110111_00000000
xxxxxxx_xxxxxxxx
xxxxxxx_oooooooo
11a. Load No Operation Command
0100011_00000000
0110011_00000000
xxxxxxx_xxxxxxxx
xxxxxxx_xxxxxxxx
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.
4. Set bits to “0” to program the corresponding lock bit, “1” to leave the lock bit unchanged.
5. “0” = programmed, “1” = unprogrammed.
6. The bit mapping for fuses high byte is listed in Table 104 on page 257
7. The bit mapping for fuses low byte is listed in Table 105 on page 258
8. The bit mapping for Lock bits byte is listed in Table 102 on page 256
9. Address bits exceeding PCMSB and EEAMSB (Table 106 and Table 107) are don’t care
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2503J–AVR–10/06
ATMEL [ ATMEL ]
