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ATmega325P 数据表(PDF) 260 Page - ATMEL Corporation

部件名 ATmega325P
功能描述  8-bit Microcontroller with 32K Bytes In-System Programmable Flash
PDF  364 Pages
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制造商  ATMEL [ATMEL Corporation]
网页  http://www.atmel.com
标志 ATMEL - ATMEL Corporation

ATmega325P 数据表(HTML) 260 Page - ATMEL Corporation

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260
8023F–AVR–07/09
ATmega325P/3250P
Note:
1. “1” means unprogrammed, “0” means programmed
Note:
1. “1” means unprogrammed, “0” means programmed
Table 24-2.
Boot Lock Bit0 Protection Modes (Application Section)(1)
BLB0 Mode
BLB02
BLB01
Protection
11
1
No restrictions for SPM or LPM accessing the Application
section.
2
1
0
SPM is not allowed to write to the Application section.
30
0
SPM is not allowed to write to the Application section, and LPM
executing from the Boot Loader section is not allowed to read
from the Application section. If Interrupt Vectors are placed in
the Boot Loader section, interrupts are disabled while executing
from the Application section.
40
1
LPM executing from the Boot Loader section is not allowed to
read from the Application section. If Interrupt Vectors are placed
in the Boot Loader section, interrupts are disabled while
executing from the Application section.
Table 24-3.
Boot Lock Bit1 Protection Modes (Boot Loader Section)
(1)
BLB1 Mode
BLB12
BLB11
Protection
11
1
No restrictions for SPM or LPM accessing the Boot Loader
section.
2
1
0
SPM is not allowed to write to the Boot Loader section.
30
0
SPM is not allowed to write to the Boot Loader section, and LPM
executing from the Application section is not allowed to read
from the Boot Loader section. If Interrupt Vectors are placed in
the Application section, interrupts are disabled while executing
from the Boot Loader section.
40
1
LPM executing from the Application section is not allowed to
read from the Boot Loader section. If Interrupt Vectors are
placed in the Application section, interrupts are disabled while
executing from the Boot Loader section.



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