欢迎访问ic37.com |
会员登录 免费注册
发布采购

MC9S12P64CFT 参数 Datasheet PDF下载

MC9S12P64CFT图片预览
型号: MC9S12P64CFT
PDF下载: 下载PDF文件 查看货源
内容描述: 微控制器 [Microcontrollers]
分类和应用: 微控制器外围集成电路时钟
文件页数/大小: 566 页 / 7414 K
品牌: FREESCALE [ Freescale ]
 浏览型号MC9S12P64CFT的Datasheet PDF文件第459页浏览型号MC9S12P64CFT的Datasheet PDF文件第460页浏览型号MC9S12P64CFT的Datasheet PDF文件第461页浏览型号MC9S12P64CFT的Datasheet PDF文件第462页浏览型号MC9S12P64CFT的Datasheet PDF文件第464页浏览型号MC9S12P64CFT的Datasheet PDF文件第465页浏览型号MC9S12P64CFT的Datasheet PDF文件第466页浏览型号MC9S12P64CFT的Datasheet PDF文件第467页  
128 KByte Flash Module (S12FTMRC128K1V1)  
Table 13-50. Unsecure Flash Command Error Handling  
Register  
Error Bit  
Error Condition  
Set if CCOBIX[2:0] != 000 at command launch  
ACCERR  
Set if command not available in current mode (see Table 13-27)  
Set if any area of the P-Flash or D-Flash memory is protected  
Set if any errors have been encountered during the verify operation  
FPVIOL  
FSTAT  
MGSTAT1  
Set if any non-correctable errors have been encountered during the verify  
operation  
MGSTAT0  
13.4.5.11 Verify Backdoor Access Key Command  
The Verify Backdoor Access Key command will only execute if it is enabled by the KEYEN bits in the  
FSEC register (see Table 13-9). The Verify Backdoor Access Key command releases security if user-  
supplied keys match those stored in the Flash security bytes of the Flash configuration field (see Table 13-  
3). The Verify Backdoor Access Key command must not be executed from the Flash block containing the  
backdoor comparison key to avoid code runaway.  
Table 13-51. Verify Backdoor Access Key Command FCCOB Requirements  
CCOBIX[2:0]  
FCCOB Parameters  
Not required  
000  
001  
010  
011  
100  
0x0C  
Key 0  
Key 1  
Key 2  
Key 3  
Upon clearing CCIF to launch the Verify Backdoor Access Key command, the Memory Controller will  
check the FSEC KEYEN bits to verify that this command is enabled. If not enabled, the Memory  
Controller sets the ACCERR bit in the FSTAT register and terminates. If the command is enabled, the  
Memory Controller compares the key provided in FCCOB to the backdoor comparison key in the Flash  
configuration field with Key 0 compared to 0x3_FF00, etc. If the backdoor keys match, security will be  
released. If the backdoor keys do not match, security is not released and all future attempts to execute the  
Verify Backdoor Access Key command are aborted (set ACCERR) until a reset occurs. The CCIF flag is  
set after the Verify Backdoor Access Key operation has completed.  
S12P-Family Reference Manual, Rev. 1.13  
Freescale Semiconductor  
463  
 复制成功!
51La