ATMEGA8L-8MUR Atmel, ATMEGA8L-8MUR Datasheet - Page 213

• Manufacturer Part Number: ATMEGA8L-8MUR
• Description: MCU AVR 8KB FLASH 8MHZ 32QFN
• Manufacturer: Atmel
• Series: AVR® ATmegar

Specifications of ATMEGA8L-8MUR

• Core Processor: AVR
• Core Size: 8-Bit
• Speed: 8MHz
• 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

ATmega8 Boot Loader
Parameters
2486Z–AVR–02/11
In
programming are given.
Table 82. Boot Size Configuration
Note:
BOOTSZ1
Table 82
Return:
ready yet
Do_spm:
Wait_spm:
Wait_ee:
1
1
0
0
; return to RWW section
; verify that RWW section is safe to read
in
sbrs temp1, RWWSB
ret
; re-enable the RWW section
ldi
rcallDo_spm
rjmp Return
; check for previous SPM complete
in
sbrc temp1, SPMEN
rjmp Wait_spm
; input: spmcrval determines SPM action
; disable interrupts if enabled, store status
in
cli
; check that no EEPROM write access is present
sbic EECR, EEWE
rjmp Wait_ee
; SPM timed sequence
out
spm
; restore SREG (to enable interrupts if originally enabled)
out
ret
The different BOOTSZ Fuse configurations are shown in
temp1, SPMCR
spmcrval, (1<<RWWSRE) | (1<<SPMEN)
temp1, SPMCR
temp2, SREG
SPMCR, spmcrval
SREG, temp2
through
BOOTSZ0
1
0
1
0
Table 84 on page
Boot
Size
128
words
256
words
512
words
1024
words
Pages
16
32
4
8
214, the parameters used in the description of the self
Application
Flash
Section
0x000 -
0xF7F
0x000 -
0xEFF
0x000 -
0xDFF
0x000 -
0xBFF
; If RWWSB is set, the RWW section is not
Boot
Loader
Flash
Section
0xF80 -
0xFFF
0xF00 -
0xFFF
0xE00 -
0xFFF
0xC00 -
0xFFF
Figure 102 on page 204
End
Application
Section
0xF7F
0xEFF
0xDFF
0xBFF
ATmega8(L)
Boot Reset
Address
(Start Boot
Loader
Section)
0xF80
0xF00
0xE00
0xC00
213