ATMEGA169 ATMEL [ATMEL Corporation], ATMEGA169 Datasheet - Page 292

• Manufacturer Part Number: ATMEGA169
• Description: 8-bit Microcontroller with 16K Bytes In-System Programmable Flash
• Manufacturer: ATMEL [ATMEL Corporation]

Table 131. JTAG Programming Instruction (Continued)
Set (Continued)
Notes:
292
Instruction
8f. Read Fuses and Lock Bits
9a. Enter Signature Byte Read
9b. Load Address Byte
9c. Read Signature Byte
10a. Enter Calibration Byte Read
10b. Load Address Byte
10c. Read Calibration Byte
11a. Load No Operation Command
1. This command sequence is not required if the seven MSB are correctly set by the previous command sequence (which is
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 Extended byte is listed in Table 118 on page 267
7. The bit mapping for Fuses High byte is listed in Table 119 on page 268
8. The bit mapping for Fuses Low byte is listed in Table 120 on page 268
9. The bit mapping for Lock bits byte is listed in Table 116 on page 266
10. Address bits exceeding PCMSB and EEAMSB (Table 121 and Table 122) are don’t care
11. All TDI and TDO sequences are represented by binary digits (0b...).
ATmega169/V
normally the case).
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
TDI Sequence
0111010_00000000
0111110_00000000
0110010_00000000
0110110_00000000
0110111_00000000
0100011_00001000
0000011_bbbbbbbb
0110010_00000000
0110011_00000000
0100011_00001000
0000011_bbbbbbbb
0110110_00000000
0110111_00000000
0100011_00000000
0110011_00000000
TDO Sequence
xxxxxxx_xxxxxxxx
xxxxxxx_oooooooo
xxxxxxx_oooooooo
xxxxxxx_oooooooo
xxxxxxx_oooooooo
xxxxxxx_xxxxxxxx
xxxxxxx_xxxxxxxx
xxxxxxx_xxxxxxxx
xxxxxxx_oooooooo
xxxxxxx_xxxxxxxx
xxxxxxx_xxxxxxxx
xxxxxxx_xxxxxxxx
xxxxxxx_oooooooo
xxxxxxx_xxxxxxxx
xxxxxxx_xxxxxxxx
Notes
(5)
Fuse Ext. byte
Fuse High byte
Fuse Low byte
Lock bits
2514P–AVR–07/06