Rainbow-electronics ATmega32L Manual de usuario descargar pdf (Pagina 278)

278

ATmega32(L)

2503C–AVR–10/02

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 105 on page 255

7. The bit mapping for fuses low byte is listed in Table 106 on page 256

8. The bit mapping for Lock bits byte is listed in Table 103 on page 254

9. Address bits exceeding PCMSB and EEAMSB (Table 111 and Table 112) are don’t care

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

Table 117. 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 Notes

1 2 ... 273 274 275 276 277 278 279 280 281 282 283 ... 312 313

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Rainbow-electronics ATmega32L Manual de usuario Pagina 278