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ATmega3290P Datasheet(PDF) 289 Page - ATMEL Corporation

Part # ATmega3290P
Description  8-bit Microcontroller with 32K Bytes In-System Programmable Flash
PDF  385 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATmega3290P Datasheet(HTML) 289 Page - ATMEL Corporation

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289
8021E–AVR–07/09
ATmega329P/3290P
brne Rdloop
; return to RWW section
; verify that RWW section is safe to read
Return:
in
temp1, SPMCSR
sbrs temp1, RWWSB
; If RWWSB is set, the RWW section is not ready yet
ret
; re-enable the RWW section
ldi
spmcrval, (1<<RWWSRE) | (1<<SPMEN)
call Do_spm
rjmp Return
Do_spm:
; check for previous SPM complete
Wait_spm:
in
temp1, SPMCSR
sbrc temp1, SPMEN
rjmp Wait_spm
; input: spmcrval determines SPM action
; disable interrupts if enabled, store status
in
temp2, SREG
cli
; check that no EEPROM write access is present
Wait_ee:
sbic EECR, EEWE
rjmp Wait_ee
; SPM timed sequence
out
SPMCSR, spmcrval
spm
; restore SREG (to enable interrupts if originally enabled)
out
SREG, temp2
ret
25.8.13
ATmega329P/3290P Boot Loader Parameters
In Table 25-6 through Table 25-8, the parameters used in the description of the Self-Programming are given.
Note:
1. The different BOOTSZ Fuse configurations are shown in Figure 25-2
Table 25-6.
Boot Size Configuration
(1)
BOOTSZ1
BOOTSZ0
Boot Size
Pages
Application
Flash Section
Boot Loader
Flash Section
End
Application
Section
Boot Reset
Address
(Start
Boot Loader
Section)
1
1
256 words
4
0x0000-0x3EFF
0x3F00-0x3FFF
0x3EFF
0x3F00
1
0
512 words
8
0x0000-0x3DFF
0x3E00-0x3FFF
0x3DFF
0x3E00
0
1
1024 words
16
0x0000-0x3BFF
0x3C00-0x3FFF
0x3BFF
0x3C00
0
0
2048 words
32
0x0000-0x37FF
0x3800-0x3FFF
0x37FF
0x3800



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