Техническая Спецификация для Atmel ATmega328P Xplained Mini MEGA328P-XMINI MEGA328P-XMINI
Модели
MEGA328P-XMINI
293
ATmega48A/PA/88A/PA/168A/PA/328/P [DATASHEET]
Atmel-8271H-AVR- ATmega-Datasheet_08/2014
28.7.8 Programming the Fuse Low Bits
The algorithm for programming the Fuse Low bits is as follows (refer to
for details on Command and Data loading):
1. A: Load Command “0100 0000”.
2.
C: Load Data Low Byte. Bit n = “0” programs and bit n = “1” erases the Fuse bit.
3.
Give WR a negative pulse and wait for RDY/BSY to go high.
28.7.9 Programming the Fuse High Bits
The algorithm for programming the Fuse High bits is as follows (refer to
for details on Command and Data loading):
1. A: Load Command “0100 0000”.
2.
C: Load Data Low Byte. Bit n = “0” programs and bit n = “1” erases the Fuse bit.
3.
Set BS1 to “1” and BS2 to “0”. This selects high data byte.
4.
Give WR a negative pulse and wait for RDY/BSY to go high.
5.
Set BS1 to “0”. This selects low data byte.
28.7.10 Programming the Extended Fuse Bits
for details on Command and Data loading):
1. 1. A: Load Command “0100 0000”.
2.
2. C: Load Data Low Byte. Bit n = “0” programs and bit n = “1” erases the Fuse bit.
3.
3. Set BS1 to “0” and BS2 to “1”. This selects extended data byte.
4.
4. Give WR a negative pulse and wait for RDY/BSY to go high.
5.
5. Set BS2 to “0”. This selects low data byte.
Figure 28-5.
Programming the FUSES Waveforms
RDY/BSY
WR
OE
RESET +12V
PAGEL
0x40
DATA
DATA
XX
XA1
XA0
BS1
XTAL1
A
C
0x40
DATA
XX
A
C
Write Fuse Low byte
Write Fuse high byte
0x40
DATA
XX
A
C
Write Extended Fuse byte
BS2