ATMEGA168PA-PU Atmel, ATMEGA168PA-PU Datasheet - Page 293
ATMEGA168PA-PU
Manufacturer Part Number
ATMEGA168PA-PU
Description
MCU, 8BIT, AVR, 16K FLASH, 28PDIP
Manufacturer
Atmel
Datasheet
1.ATMEGA48A-PU.pdf
(566 pages)
Specifications of ATMEGA168PA-PU
Controller Family/series
Atmega
No. Of I/o's
23
Eeprom Memory Size
512Byte
Ram Memory Size
1KB
Cpu Speed
20MHz
No.
RoHS Compliant
Core Size
8bit
Program Memory Size
16KB
Oscillator Type
External, Internal
Rohs Compliant
Yes
Available stocks
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Manufacturer
Quantity
Price
Company:
Part Number:
ATMEGA168PA-PU
Manufacturer:
TI
Quantity:
1 240
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26.8.16
In
Table 26-13. Boot Size Configuration, ATmega328/328P
Table 26-14. Read-While-Write Limit, ATmega328/328P
For details about these two section, see
Write Section” on page
Table 26-15. Explanation of Different Variables used in
Note:
8271C–AVR–08/10
BOOTSZ1
Section
Read-While-Write section (RWW)
No Read-While-Write section (NRWW)
Variable
PCMSB
PAGEMSB
ZPCMSB
ZPAGEMSB
PCPAGE
PCWORD
Table 26-13
1
1
0
0
1. Z15: always ignored
ATmega328 and ATmega328P Boot Loader Parameters
Z0: should be zero for all SPM commands, byte select for the LPM instruction.
See
Programming.
BOOTSZ0
through
”Addressing the Flash During Self-Programming” on page 284
1
0
1
0
Table
280.
Boot
Size
256 words
512 words
1024 words
2048 words
PC[13:6]
Note:
PC[5:0]
ATmega48A/48PA/88A/88PA/168A/168PA/328/328
13
5
26-15, the parameters used in the description of the self programming are given.
The different BOOTSZ Fuse configurations are shown in
Pages
16
32
4
8
”NRWW – No Read-While-Write Section” on page 280
Corresponding
Application
Flash
Section
0x0000 - 0x3EFF
0x0000 - 0x3DFF
0x0000 - 0x3BFF
0x0000 - 0x37FF
Z-value
Z14:Z7
Z6:Z1
Z14
Z6
(1)
Figure 26-3
Boot
Loader
Flash
Section
0x3F00 - 0x3FFF
0x3E00 - 0x3FFF
0x3C00 - 0x3FFF
0x3800 - 0x3FFF
Description
Most significant bit in the Program Counter. (The Program Counter
is 14 bits PC[13:0])
Most significant bit which is used to address the words within
one page (64 words in a page requires 6 bits PC [5:0])
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)
Pages
224
32
and the Mapping to the Z-pointer, ATmega328/328P
for details about the use of Z-pointer during Self-
End
Application
Section
0x3EFF
0x3DFF
0x3BFF
0x37FF
Address
0x0000 - 0x37FF
0x3800 - 0x3FFF
Figure 26-2 on page
Boot Reset Address (Start Boot
Loader Section)
0x3F00
0x3E00
0x3C00
0x3800
and
”RWW – Read-While-
282.
293
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