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ATmega16A Datasheet(PDF) 262 Page - ATMEL Corporation

Part # ATmega16A
Description  8-bit Microcontroller with 16K Bytes In-System Programmable Flash
PDF  352 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATmega16A Datasheet(HTML) 262 Page - ATMEL Corporation

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8154B–AVR–07/09
ATmega16A
Do_spm:
; check for previous SPM complete
Wait_spm:
in
temp1, SPMCR
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
SPMCR, spmcrval
spm
; restore SREG (to enable interrupts if originally enabled)
out
SREG, temp2
ret
25.8.13
ATmega16A Boot Loader Parameters
In Table 25-6 through Table 25-8, the parameters used in the description of the self program-
ming are given.
Note:
1. The different BOOTSZ Fuse configurations are shown in Figure 25-2
Note:
1. For details about these two section, see “NRWW – No Read-While-Write Section” on page
251 and “RWW – Read-While-Write Section” on page 251
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)
11
128
words
2
$0000 -
$1F7F
$1F80 -
$1FFF
$1F7F
$1F80
10
256
words
4
$0000 -
$1EFF
$1F00 -
$1FFF
$1EFF
$1F00
01
512
words
8
$0000 -
$1DFF
$1E00 -
$1FFF
$1DFF
$1E00
00
1024
words
16
$0000 -
$1BFF
$1C00 -
$1FFF
$1BFF
$1C00
Table 25-7.
Read-While-Write Limit
(1)
Section
Pages
Address
Read-While-Write section (RWW)
112
$0000 - $1BFF
No Read-While-Write section (NRWW)
16
$1C00 - $1FFF



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