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AT89C51ED2-RDTUM 数据表(PDF) 47 Page - ATMEL Corporation

部件名 AT89C51ED2-RDTUM
功能描述  8-bit Flash Microcontroller
PDF  137 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  ATMEL [ATMEL Corporation]
网页  http://www.atmel.com
标志 ATMEL - ATMEL Corporation

AT89C51ED2-RDTUM 数据表(HTML) 47 Page - ATMEL Corporation

Back Button AT89C51ED2-RDTUM Datasheet HTML 43Page - ATMEL Corporation AT89C51ED2-RDTUM Datasheet HTML 44Page - ATMEL Corporation AT89C51ED2-RDTUM Datasheet HTML 45Page - ATMEL Corporation AT89C51ED2-RDTUM Datasheet HTML 46Page - ATMEL Corporation AT89C51ED2-RDTUM Datasheet HTML 47Page - ATMEL Corporation AT89C51ED2-RDTUM Datasheet HTML 48Page - ATMEL Corporation AT89C51ED2-RDTUM Datasheet HTML 49Page - ATMEL Corporation AT89C51ED2-RDTUM Datasheet HTML 50Page - ATMEL Corporation AT89C51ED2-RDTUM Datasheet HTML 51Page - ATMEL Corporation Next Button
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4235K–8051–05/08
AT89C51RD2/ED2
The first two options are more reliable because the watchdog timer is never disabled as in option
#3. If the program counter ever goes astray, a match will eventually occur and cause an internal
reset. The second option is also not recommended if other PCA modules are being used.
Remember, the PCA timer is the time base for all modules; changing the time base for other
modules would not be a good idea. Thus, in most applications the first solution is the best option.
This watchdog timer won’t generate a reset out on the reset pin.



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