欧美成人免费电影,国产欧美一区二区三区精品酒店,精品国产a毛片,色网在线免费观看

參數資料
型號: MC56F8356VFV60
廠商: MOTOROLA INC
元件分類: 數字信號處理
英文描述: 56F8356 16-bit Hybrid Controller
中文描述: 16-BIT, 120 MHz, OTHER DSP, PQFP144
封裝: LQFP-144
文件頁數: 114/160頁
文件大小: 1380K
代理商: MC56F8356VFV60
114
56F8356 Technical Data
Preliminary
Part 7 Security Features
The 56F8356 offers security features intended to prevent unauthorized users from reading the
contents of the Flash memory (FM) array. The 56F8356’s Flash security consists of several
hardware interlocks that block the means by which an unauthorized user could gain access to the
Flash array.
However, part of the security must lie with the user’s code. An extreme example would be user’s
code that dumps the contents of the internal program, as this code would defeat the purpose of
security. At the same time, the user may also wish to put a “backdoor” in his program. As an
example, the user downloads a security key through the SCI, allowing access to a programming
routine that updates parameters stored in another section of the Flash.
7.1 Operation with Security Enabled
Once the user has programmed the Flash with his application code, the 56F8356 can be secured by
programming the security bytes located in the FM configuration field, which occupies a portion of
the FM array. These non-volatile bytes will keep the part secured through reset and through
power-down of the device. Only two bytes within this field are used to enable or disable security.
Refer to the Flash Memory section in the
56F8300 Peripheral User Manual
for the state of the
security bytes and the resulting state of security. When Flash security mode is enabled in
accordance with the method described in the Flash Memory module specification, the 56F8356
will disable external P-space accesses restricting code execution to internal memory, disable
EXTBOOT = 1 mode, and disable the core EOnCE debug capabilities. Normal program execution
is otherwise unaffected.
7.2 Flash Access Blocking Mechanisms
The 56F8356 has several operating functional and test modes. Effective Flash security must
address operating mode selection and anticipate modes in which the on-chip Flash can be
compromised and read without explicit user permission. Methods to block these are outlined in the
next subsections.
7.2.1
At boot time, the SIM determines in which functional modes the 56F8356 will operate. These are:
Forced Operating Mode Selection
Internal Boot Mode
External Boot Mode
Secure Mode
When Flash security is enabled as described in the Flash Memory module specification, the
56F8356 will boot in internal boot mode, disable all access to external P-space, and start executing
code from the Boot Flash at address 0x02_0000.
This security affords protection only to applications in which the 56F8356 operates in internal
Flash security mode. Therefore, the security feature cannot be used unless all executing code
resides on-chip.
When security is enabled, any attempt to override the default internal operating mode by asserting
the EXTBOOT pin in conjunction with reset will be ignored.
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
相關PDF資料
PDF描述
MC56F8356MFV60 56F8356 16-bit Hybrid Controller
MC56F8357 16-bit Digital Signal Processor
MC56F8357 16-BIT HYBRID CONTROLLERS
MC56F8357MPY60 16-bit Digital Signal Processor
MC56F8357VPY60 16-bit Digital Signal Processor
相關代理商/技術參數
參數描述
MC56F8356VFVE 功能描述:數字信號處理器和控制器 - DSP, DSC 60MHz 60MIPS RoHS:否 制造商:Microchip Technology 核心:dsPIC 數據總線寬度:16 bit 程序存儲器大小:16 KB 數據 RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數量:35 定時器數量:3 設備每秒兆指令數:50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風格:SMD/SMT
MC56F8357 制造商:未知廠家 制造商全稱:未知廠家 功能描述:16-BIT HYBRID CONTROLLERS
MC56F8357EVM 功能描述:KIT EVALUATION FOR MC56F8357 RoHS:否 類別:編程器,開發系統 >> 過時/停產零件編號 系列:- 標準包裝:1 系列:- 傳感器類型:CMOS 成像,彩色(RGB) 傳感范圍:WVGA 接口:I²C 靈敏度:60 fps 電源電壓:5.7 V ~ 6.3 V 嵌入式:否 已供物品:成像器板 已用 IC / 零件:KAC-00401 相關產品:4H2099-ND - SENSOR IMAGE WVGA COLOR 48-PQFP4H2094-ND - SENSOR IMAGE WVGA MONO 48-PQFP
MC56F8357MPY60 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:16-bit Digital Signal Processor
MC56F8357MPYE 功能描述:數字信號處理器和控制器 - DSP, DSC 16 BIT HYBRID CONTROLLER RoHS:否 制造商:Microchip Technology 核心:dsPIC 數據總線寬度:16 bit 程序存儲器大小:16 KB 數據 RAM 大小:2 KB 最大時鐘頻率:40 MHz 可編程輸入/輸出端數量:35 定時器數量:3 設備每秒兆指令數:50 MIPs 工作電源電壓:3.3 V 最大工作溫度:+ 85 C 封裝 / 箱體:TQFP-44 安裝風格:SMD/SMT
主站蜘蛛池模板: 漳州市| 商丘市| 阿拉善右旗| 铁岭市| 兴和县| 陕西省| 临桂县| 五寨县| 松原市| 上饶县| 富锦市| 东宁县| 安岳县| 罗江县| 岳阳市| 磐安县| 和政县| 滨州市| 兰坪| 光泽县| 平果县| 深州市| 余姚市| 北碚区| 都兰县| 珲春市| 塘沽区| 额济纳旗| 阿坝| 柘荣县| 二连浩特市| 西乡县| 呼和浩特市| 玉环县| 满洲里市| 康保县| 温宿县| 黔江区| 奉贤区| 报价| 遵义县|