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參數資料
型號: W79E804ASG
廠商: WINBOND ELECTRONICS CORP
元件分類: 微控制器/微處理器
英文描述: 8-BIT MICROCONTROLLER
中文描述: 8-BIT, FLASH, 20 MHz, MICROCONTROLLER, PDSO20
封裝: 0.300 INCH, ROHS COMPLIANT, SOP-20
文件頁數: 11/115頁
文件大?。?/td> 1456K
代理商: W79E804ASG
W79E804A/803A/802A
Publication Release Date: July 16, 2007
- 11 -
Revision A2
6.7.5 Scratch-pad RAM
The W79E804 series have a
256
bytes on-chip scratch-pad RAM. These can be used by the user for
temporary storage during program execution. A certain section of this RAM is bit addressable, and can
be directly addressed for this purpose.
6.7.6 Stack Pointer
The W79E804 series have an 8-bit Stack Pointer which points to the top of the Stack. This stack
resides in the Scratch Pad RAM in the W79E804 series. Hence the size of the stack is limited by the
size of this RAM.
6.8 Power Management
Power Management like the standard 8052, the W79E804 series also have the IDLE and POWER
DOWN modes of operation. In the IDLE mode, the clock to the CPU is stopped while the timers, serial
ports and interrupt block continue to operate. In the POWER DOWN mode, all clocks are stopped and
the chip operation is completely stopped. This is the lowest power consumption state.
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