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ATMEGA169PV 参数 Datasheet PDF下载

ATMEGA169PV图片预览
型号: ATMEGA169PV
PDF下载: 下载PDF文件 查看货源
内容描述: 微控制器,带有16K字节的系统内可编程闪存 [Microcontroller with 16K Bytes In-System Programmable Flash]
分类和应用: 闪存微控制器
文件页数/大小: 390 页 / 3485 K
品牌: ATMEL [ ATMEL ]
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Table 26-2. Lock Bit Protection Modes(1)(2) (Continued)  
Memory Lock Bits  
Protection Type  
No restrictions for SPM or LPM accessing the Boot Loader  
section.  
1
2
1
1
1
0
SPM is not allowed to write to the Boot Loader section.  
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.  
3
0
0
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.  
4
0
1
Notes: 1. Program the Fuse bits and Boot Lock bits before programming the LB1 and LB2.  
2. “1” means unprogrammed, “0” means programmed  
26.2 Fuse Bits  
The ATmega169P has three Fuse bytes. Table 26-3 - Table 26-5 describe briefly the functional-  
ity of all the fuses and how they are mapped into the Fuse bytes. Note that the fuses are read as  
logical zero, “0”, if they are programmed.  
Table 26-3. Extended Fuse Byte  
Fuse Low Byte  
Bit No  
Description  
Default Value  
7
6
5
4
3
2
1
0
1
1
1
1
BODLEVEL2(1)  
BODLEVEL1(1)  
BODLEVEL0(1)  
RSTDISBL(2)  
Brown-out Detector trigger level  
Brown-out Detector trigger level  
Brown-out Detector trigger level  
External Reset Disable  
1 (unprogrammed)  
1 (unprogrammed)  
1 (unprogrammed)  
1 (unprogrammed)  
Notes: 1. See Table 9-2 on page 49 for BODLEVEL Fuse decoding.  
2. Port G, PG5 is input only. Pull-up is always on. See ”Alternate Functions of Port G” on page  
85.  
296  
ATmega169P  
8018A–AVR–03/06  
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