ATMEGA8-16AC Atmel, ATMEGA8-16AC Datasheet - Page 225
ATMEGA8-16AC
Manufacturer Part Number
ATMEGA8-16AC
Description
IC AVR MCU 8K 16MHZ COM 32-TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Specifications of ATMEGA8-16AC
Core Processor
AVR
Core Size
8-Bit
Speed
16MHz
Connectivity
I²C, SPI, UART/USART
Peripherals
Brown-out Detect/Reset, POR, PWM, WDT
Number Of I /o
23
Program Memory Size
8KB (4K x 16)
Program Memory Type
FLASH
Eeprom Size
512 x 8
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
4.5 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
0°C ~ 70°C
Package / Case
32-TQFP, 32-VQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
ATMEGA816AC
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Reading the Flash
Reading the EEPROM
Programming the
Fuse Low Bits
2486Z–AVR–02/11
Figure 107. Programming the EEPROM Waveforms
The algorithm for reading the Flash memory is as follows (refer to
page 222
1. A: Load Command “0000 0010”
2. G: Load Address High byte (0x00 - 0xFF)
3. B: Load Address Low byte (0x00 - 0xFF)
4. Set OE to “0”, and BS1 to “0”. The Flash word Low byte can now be read at DATA
5. Set BS1 to “1”. The Flash word High byte can now be read at DATA
6. Set OE to “1”
The algorithm for reading the EEPROM memory is as follows (refer to
on page 222
1. A: Load Command “0000 0011”
2. G: Load Address High byte (0x00 - 0xFF)
3. B: Load Address Low byte (0x00 - 0xFF)
4. Set OE to “0”, and BS1 to “0”. The EEPROM Data byte can now be read at DATA
5. Set OE to “1”
The algorithm for programming the Fuse Low bits is as follows (refer to
on page 222
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 and BS2 to “0”
4. Give WR a negative pulse and wait for RDY/BSY to go high
RESET +12V
RDY/BSY
PAGEL
for details on Command and Address loading):
XTAL1
DATA
XA1
XA0
BS1
BS2
WR
OE
for details on Command and Address loading):
for details on Command and Data loading):
0x11
A
ADDR. HIGH
G
ADDR. LOW
B
DATA
C
E
XX
ADDR. LOW
B
DATA
C
K
XX
E
“Programming the Flash” on
“Programming the Flash”
“Programming the Flash”
ATmega8(L)
L
225
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