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C8051F363 参数 Datasheet PDF下载

C8051F363图片预览
型号: C8051F363
PDF下载: 下载PDF文件 查看货源
内容描述: 混合信号ISP功能的Flash MCU系列 [Mixed Signal ISP Flash MCU Family]
分类和应用:
文件页数/大小: 288 页 / 2659 K
品牌: SILICON [ SILICON ]
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C8051F360/1/2/3/4/5/6/7/8/9  
13.2.1. Summary of Flash Security Options  
The level of Flash security depends on the Flash access method. The three Flash access methods that  
can be restricted are reads, writes, and erases from the C2 debug interface, user firmware executing on  
unlocked pages, and user firmware executing on locked pages. Table 13.1 summarizes the Flash security  
features of the C8051F36x devices.  
Table 13.1. Flash Security Summary  
Action  
C2 Debug  
Interface  
User Firmware executing from:  
an unlocked page a locked page  
Read, Write or Erase unlocked pages  
(except page with Lock Byte)  
Permitted  
Not Permitted  
Permitted  
Permitted  
Permitted  
Permitted  
Permitted  
Permitted  
Permitted  
Permitted  
FEDR  
Read, Write or Erase locked pages  
(except page with Lock Byte)  
FEDR  
Read or Write page containing Lock Byte  
(if no pages are locked)  
Permitted  
FEDR  
Read or Write page containing Lock Byte  
(if any page is locked)  
Not Permitted  
Permitted  
Read contents of Lock Byte  
(if no pages are locked)  
Permitted  
FEDR  
Read contents of Lock Byte  
(if any page is locked)  
Not Permitted  
Permitted  
Erase page containing Lock Byte  
(if no pages are locked)  
FEDR  
ErasepagecontainingLockByte-Unlockallpages  
(if any page is locked)  
Only C2DE  
Not Permitted  
Not Permitted  
Not Permitted  
FEDR  
FEDR  
Lock additional pages  
(change '1's to '0's in the Lock Byte)  
FEDR  
FEDR  
Unlock individual pages  
(change '0's to '1's in the Lock Byte)  
FEDR  
FEDR  
Read, Write or Erase Reserved Area  
FEDR  
FEDR  
C2DE - C2 Device Erase (Erases all Flash pages including the page containing the Lock Byte)  
FEDR - Not permitted; Causes Flash Error Device Reset (FERROR bit in RSTSRC is '1' after reset)  
- All prohibited operations that are performed via the C2 interface are ignored (do not cause device reset).  
- Locking any Flash page also locks the page containing the Lock Byte.  
- Once written to, the Lock Byte cannot be modified except by performing a C2 Device Erase.  
- If user code writes to the Lock Byte, the Lock does not take effect until the next device reset.  
Rev. 1.0  
139