- 您现在的位置：买卖IC网 > PDF目录69024 > MC56F8006VLC (FREESCALE SEMICONDUCTOR INC) 16-BIT, FLASH, 32 MHz, MICROCONTROLLER, PQFP32 PDF资料下载
参数资料
| 型号： | MC56F8006VLC |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 16-BIT, FLASH, 32 MHz, MICROCONTROLLER, PQFP32 |
| 封装： | 7 X 7 MM, 1.40 MM HEIGHT, 0.80 MM PITCH, MS-026BBA, LQFP-32 |
| 文件页数： | 43/106页 |
| 文件大小： | 1215K |
| 代理商： | MC56F8006VLC |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页当前第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页第106页
Specifications
MC56F8006/MC56F8002 Digital Signal Controller, Rev. 4
Freescale Semiconductor
41
7.2.4
Flash Lockout Recovery without Mass Erase
7.2.4.1
Without Presenting Back Door Access Keys to the Flash Unit
A user can un-secure a secured device by programming the word 0x0000 into program flash location 0x00 1FF7. After
completing the programming, the JTAG TAP controller and the device must be reset to return to normal unsecured operation.
You are responsible for directing the device to invoke the flash programming subroutine to reprogram the word 0x0000 into
program flash location 0x00 1FF7. This is done by, for example, toggling a specific pin or downloading a user-defined key
through serial interfaces.
NOTE
Flash contents can be programmed only from 1s to 0s.
7.2.4.2
Presenting Back Door Access Key to the Flash Unit
It is possible to temporarily bypass the security through a back door access scheme, using a 4-word key, to temporarily unlock
of the flash. A back door access requires support from the embedded software. This software would typically permit an external
user to enter a four word code through one of the communications interfaces and then use it to attempt the unlock sequence. If
your input matches the four word code stored at location 0x00 1FFC–0x00 1FFF in the flash memory, the part immediately
becomes unsecured (at runtime) and you can access internal memory via JTAG/EOnCE port. Refer to the MC56F8006
Peripheral Reference Manual for detail. The key must be entered in four consecutive accesses to the flash, so this routine should
be designed to run in RAM.
7.3
Product Analysis
The recommended method of unsecuring a secured device for product analysis of field failures is via the method described in
Section 7.2.4.2, “Presenting Back Door Access Key to the Flash Unit.” The customer would need to supply technical support
with the details of the protocol to access the subroutines in flash memory. An alternative method for performing analysis on a
secured device would be to mass-erase and reprogram the flash with the original code, but modify the security word or not
program the security word.
8
Specifications
8.1
General Characteristics
The 56F8006/56F8002 is fabricated in high-density low power and low leakage CMOS with a maximum voltage of 3.6 V digital
inputs during normal operation without causing damage.
Absolute maximum ratings in Table 12 are stress ratings only, and functional operation at the maximum is not guaranteed. Stress
beyond these ratings may affect device reliability or cause permanent damage to the device.
Unless otherwise stated, all specifications within this chapter apply over the temperature range of –40C to 105C ambient
temperature over the following supply ranges: VSS =VSSA =0V, VDD =VDDA = 3.0–3.6 V, CL < 50 pF, fOP = 32 MHz
CAUTION
This device contains protective circuitry to guard against damage due to high static voltage
or electrical fields. However, normal precautions are advised to avoid application of any
voltages higher than maximum-rated voltages to this high-impedance circuit. Reliability of
operation is enhanced if unused inputs are tied to an appropriate voltage level.
相关PDF资料 |
PDF描述 |
|---|---|
| MC56F8006VLF | 16-BIT, FLASH, 32 MHz, MICROCONTROLLER, PQFP48 |
| MC56F8006MWL | 16-BIT, FLASH, 32 MHz, MICROCONTROLLER, PDSO28 |
| MC56F8006MLF | 16-BIT, FLASH, 32 MHz, MICROCONTROLLER, PQFP48 |
| MC56F8323MFB60 | 0-BIT, 120 MHz, OTHER DSP, PQFP64 |
| MC68020CFC25E | 32-BIT, 25 MHz, MICROPROCESSOR, PQFP132 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MC56F8006VLF | 功能描述:数字信号处理器和控制器 - DSP, DSC DSC 48LQFP 16K Flash RoHS:否 制造商:Microchip Technology 核心:dsPIC 数据总线宽度:16 bit 程序存储器大小:16 KB 数据 RAM 大小:2 KB 最大时钟频率:40 MHz 可编程输入/输出端数量:35 定时器数量:3 设备每秒兆指令数:50 MIPs 工作电源电压:3.3 V 最大工作温度:+ 85 C 封装 / 箱体:TQFP-44 安装风格:SMD/SMT |
| MC56F8006VLF | 制造商:Freescale Semiconductor 功能描述:IC DSC 16BIT 16KB 32MHZ 3.6V LQFP-48 |
| MC56F8006VWL | 功能描述:数字信号处理器和控制器 - DSP, DSC 16 BIT DSPHC RoHS:否 制造商:Microchip Technology 核心:dsPIC 数据总线宽度:16 bit 程序存储器大小:16 KB 数据 RAM 大小:2 KB 最大时钟频率:40 MHz 可编程输入/输出端数量:35 定时器数量:3 设备每秒兆指令数:50 MIPs 工作电源电压:3.3 V 最大工作温度:+ 85 C 封装 / 箱体:TQFP-44 安装风格:SMD/SMT |
| MC56F8006VWL | 制造商:Freescale Semiconductor 功能描述:IC DSC 16BIT 16KB 32MHZ 3.6V SOIC-28 |
| MC56F8006VWLR | 功能描述:数字信号处理器和控制器 - DSP, DSC 16 BIT DSPHC RoHS:否 制造商:Microchip Technology 核心:dsPIC 数据总线宽度:16 bit 程序存储器大小:16 KB 数据 RAM 大小:2 KB 最大时钟频率:40 MHz 可编程输入/输出端数量:35 定时器数量:3 设备每秒兆指令数:50 MIPs 工作电源电压:3.3 V 最大工作温度:+ 85 C 封装 / 箱体:TQFP-44 安装风格:SMD/SMT |
发布紧急采购，3分钟左右您将得到回复。