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ATmega88 Datasheet(PDF) 277 Page - ATMEL Corporation

Part # ATmega88
Description  8-bit Microcontroller with 8K Bytes In-System Programmable Flash
PDF  340 Pages
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATmega88 Datasheet(HTML) 277 Page - ATMEL Corporation

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277
7530H–AVR–02/09
ATmega48/88/168 Automotive
Note:
1. Z15:Z13: always ignored
Z0: should be zero for all SPM commands, byte select for the LPM instruction.
See “Addressing the Flash During Self-Programming” on page 269 for details about the use of
Z-pointer during Self-Programming.
24.7.14
ATmega168 Boot Loader Parameters
In Table 24-9 through Table 24-11, the parameters used in the description of the self program-
ming are given.
Note:
The different BOOTSZ Fuse configurations are shown in Figure 24-2.
For details about these two section, see “NRWW – No Read-While-Write Section” on page 264
and “RWW – Read-While-Write Section” on page 264
Table 24-9.
Boot Size Configuration, ATmega168
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
0x0000 -
0x1F7F
0x1F80 -
0x1FFF
0x1F7F
0x1F80
10
256
words
4
0x0000 -
0x1EFF
0x1F00 -
0x1FFF
0x1EFF
0x1F00
01
512
words
8
0x0000 -
0x1DFF
0x1E00 -
0x1FFF
0x1DFF
0x1E00
00
1024
words
16
0x0000 -
0x1BFF
0x1C00 -
0x1FFF
0x1BFF
0x1C00
Table 24-10. Read-While-Write Limit, ATmega168
Section
Pages
Address
Read-While-Write section (RWW)
112
0x0000 - 0x1BFF
No Read-While-Write section (NRWW)
16
0x1C00 - 0x1FFF
Table 24-11. Explanation of Different Variables used in Figure 24-3 and the Mapping to the
Z-pointer, ATmega168
Variable
Corresponding
Z-value(1)
Description
PCMSB
12
Most significant bit in the Program Counter. (The
Program Counter is 12 bits PC[11:0])



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