ATMEGA8A-AUR Atmel, ATMEGA8A-AUR Datasheet - Page 223
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ATMEGA8A-AUR
Manufacturer Part Number
ATMEGA8A-AUR
Description
MCU AVR 8KB FLASH 16MHZ 32TQFP
Manufacturer
Atmel
Series
AVR® ATmegar
Datasheet
1.ATMEGA8A-MU.pdf
(308 pages)
Specifications of ATMEGA8A-AUR
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)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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23.8.13
8159D–AVR–02/11
Boot Loader Parameters
In
ming are given.
Table 23-6.
Note:
Table 23-7.
For details about these two section, see
and
Table 23-8.
Note:
BOOTSZ1
Section
Read-While-Write section (RWW)
No Read-While-Write section (NRWW)
Variable
PCMSB
PAGEMSB
ZPCMSB
ZPAGEMSB
PCPAGE
PCWORD
Table 23-6
“RWW – Read-While-Write Section” on page 213
1
1
0
0
The different BOOTSZ Fuse configurations are shown in
1. Z15:Z13: always ignored
Z0: should be zero for all SPM commands, byte select for the LPM instruction.
BOOTSZ0
through
Boot Size Configuration
Read-While-Write Limit
Explanation of Different Variables used in
pointer
PC[11:5]
PC[4:0]
1
0
1
0
11
4
Table
Boot
Size
128
words
256
words
512
words
1024
words
Corresponding
23-8, the parameters used in the description of the self program-
Z-value
Z12:Z6
Z5:Z1
Pages
Z12
Z5
16
32
4
8
(1)
“NRWW – No Read-While-Write Section” on page 213
Application
Flash
Section
0x000 -
0xF7F
0x000 -
0xEFF
0x000 -
0xDFF
0x000 -
0xBFF
Description
Most significant bit in the Program Counter. (The
Program Counter is 12 bits PC[11:0])
Most significant bit which is used to address the
words within one page (32 words in a page requires
5 bits PC [4:0]).
Bit in Z-register that is mapped to PCMSB. Because
Z0 is not used, the ZPCMSB equals PCMSB + 1.
Bit in Z-register that is mapped to PAGEMSB.
Because Z0 is not used, the ZPAGEMSB equals
PAGEMSB + 1.
Program counter page address: Page select, for
page erase and page write
Program counter word address: Word select, for
filling temporary buffer (must be zero during page
write operation)
Figure 23-3
Boot
Loader
Flash
Section
0xF80 -
0xFFF
0xF00 -
0xFFF
0xE00 -
0xFFF
0xC00 -
0xFFF
Figure
Pages
96
32
23-2.
End
Application
Section
0xF7F
0xEFF
0xDFF
0xBFF
and the Mapping to the Z-
Address
0x000 - 0xBFF
0xC00 - 0xFFF
ATmega8A
0xF80
0xF00
0xE00
0xC00
Boot Reset
Address
(Start Boot
Loader
Section)
223
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