A000046 Arduino, A000046 Datasheet - Page 306
A000046
Manufacturer Part Number
A000046
Description
MCU, MPU & DSP Development Tools Uno
Manufacturer
Arduino
Series
-r
Type
MCUr
Specifications of A000046
Processor To Be Evaluated
ATmega328
Interface Type
USB, I2C, SPI
Dimensions
2.7 in x 2.1 in
Operating Supply Voltage
5 V
Contents
Board
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
ATmega328
- Current page: 306 of 448
- Download datasheet (13Mb)
27.7.8
27.7.9
27.7.10
8161D–AVR–10/09
Programming the Fuse Low Bits
Programming the Fuse High Bits
Programming the Extended Fuse Bits
The algorithm for programming the Fuse Low bits is as follows (refer to
on page 302
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.
The algorithm for programming the Fuse High bits is as follows (refer to
Flash” on page 302
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.
The algorithm for programming the Extended Fuse bits is as follows (refer to
Flash” on page 302
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 27-5. Programming the FUSES Waveforms
RESET +12V
RDY/BSY
PAGEL
XTAL1
DATA
XA1
XA0
BS1
BS2
WR
OE
for details on Command and Data loading):
0x40
A
for details on Command and Data loading):
for details on Command and Data loading):
DATA
C
Write Fuse Low byte
XX
ATmega48PA/88PA/168PA/328P
0x40
A
DATA
C
Write Fuse high byte
XX
0x40
A
”Programming the Flash”
DATA
C
Write Extended Fuse byte
”Programming the
”Programming the
XX
306
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