參數(shù)資料
型號(hào)： 5962R0722402VYC
廠商： ATMEL CORP
元件分類： 微控制器/微處理器
英文描述： SPECIALTY MICROPROCESSOR CIRCUIT, PQFP256
封裝： QFP-256
文件頁數(shù)： 81/155頁
文件大?。?/td> 4139K
代理商： 5962R0722402VYC
AT697F PRELIMINARY INFORMATION
31
7703D–AERO–12/09
PR
ELI
MINA
R
Y
IN
FOR
M
AT
IO
N
Figure 14. RAM Protection Mode Overview
Segment 2
Segment 1
Segment 2
Segment mode (bp = 0)
Write
trap
Block mode (bp = 1)
RAM
Segment 1
Write
trap
Write
trap
Write
trap
Write
trap
START1
END1
START2
END2
START1
END1
START2
END2
Mask Scheme
Two block protection units are available for RAM area. Each one is controlled through a
write protection register (WPRn). Two major fields are defined : a TAG and a MASK.
The TAG defines the 15 most significant bits of the address of the block to be write
protected.
The Mask specifies which bits of the TAG are really relevant for the protection.
The write protection on the RAM area is enabled setting logical one in WPRx EN. If this bit is
set logical zero, no protection is activated.
Two protection modes can be programmed. If the WPRx BP is set logical one the protection is
active within the segment. If this bit is set logical zero, the exterior of the segment is protected.
Figure 15. RAM Protection Mode Overview
Segment 2
Segment 1
Segment 2
Segment mode (bp = 0)
Write
trap
Block mode (bp = 1)
RAM
Segment 1
Write
trap
Write
trap
Write
trap
Write
trap
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5962R0724902VPC 制造商:Intersil Corporation 功能描述:
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