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DS2252T-64-16 PDF预览

DS2252T-64-16

更新时间: 2024-10-29 03:55:43
品牌 Logo 应用领域
达拉斯 - DALLAS 微控制器和处理器外围集成电路装置双倍数据速率时钟
页数 文件大小 规格书
14页 95K
描述
Secure Microcontroller Module

DS2252T-64-16 技术参数

生命周期:Transferred包装说明:SIMM-40
Reach Compliance Code:unknown风险等级:5.69
Is Samacsys:N具有ADC:NO
其他特性:16/8 BIT MULTIPLEXED EXPANDED ADDRESS/DATA BUS地址总线宽度:16
位大小:8边界扫描:NO
CPU系列:8051最大时钟频率:16 MHz
DAC 通道:NODMA 通道:NO
外部数据总线宽度:8格式:FIXED POINT
集成缓存:NOJESD-30 代码:R-XSMA-N40
低功率模式:YESDMA 通道数量:
外部中断装置数量:2I/O 线路数量:32
串行 I/O 数:1端子数量:40
计时器数量:2片上数据RAM宽度:8
片上程序ROM宽度:最高工作温度:70 °C
最低工作温度:PWM 通道:NO
封装主体材料:UNSPECIFIED封装代码:SIMM
封装等效代码:SSIM40,.2封装形状:RECTANGULAR
封装形式:MICROELECTRONIC ASSEMBLY电源:5 V
认证状态:Not QualifiedRAM(字节):65536
RAM(字数):64000ROM(单词):0
速度:16 MHz子类别:Microcontrollers
最大压摆率:45 mA最大供电电压:5.5 V
最小供电电压:4.5 V标称供电电压:5 V
表面贴装:NO技术:CMOS
温度等级:COMMERCIAL端子形式:NO LEAD
端子节距:1.27 mm端子位置:SINGLE
uPs/uCs/外围集成电路类型:MICROCONTROLLERBase Number Matches:1

DS2252T-64-16 数据手册

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DS2252T  
DS2252T  
Secure Microcontroller Module  
FEATURES  
PACKAGE OUTLINE  
8051 compatible microcontroller for secure/sensitive  
applications  
32K, 64K, or 128K bytes of nonvolatile SRAM  
for program and/or data storage  
1
20  
21  
40  
In–system programming via on–chip serial port  
Capable of modifying its own program or data  
memory in the end system  
40-Pin SIMM  
Firmware Security Features:  
Memory stored in encrypted form  
Encryption using on–chip 64–bit key  
Automatic true random key generator  
SDI Self Destruct Input  
DESCRIPTION  
The DS2252T is an 8051 compatible microcontroller  
based on nonvolatile RAM technology. It is designed for  
systems that need to protect memory contents from dis-  
closure. This includes key data, sensitive algorithms,  
andproprietaryinformationofalltypes. Likeothermem-  
bers of the Secure Microcontroller family, it provides full  
compatibility with the 8051 instruction set, timers, serial  
port, and parallel I/O ports. By using NVRAM instead of  
ROM, the user can program, then reprogram the micro-  
controller while in–system. This allows frequent chang-  
ing of sensitive processes with minimal effort. The  
DS2252T provides an array of mechanisms to prevent  
an attacker from examining the memory. It is designed  
to resist all levels of threat including observation, analy-  
sis, and physical attack. As a result, a massive effort  
would be required to obtain any information about  
memory contents. Furthermore, the “Soft” nature of the  
DS2252T allows frequent modification of secure  
information. This minimizes that value of any informa-  
tion that is obtained.  
Improved security over previous generations  
Protects memory contents from piracy  
Crashproof Operation  
Maintains all nonvolatile resources for over 10  
years in the absence of power  
Power–fail Reset  
Early Warning Power–fail Interrupt  
Watchdog Timer  
Precision reference for power monitor  
Fully 8051 Compatible  
128 bytes scratchpad RAM  
Two timer/counters  
On–chip serial port  
32 parallel I/O port pins  
Permanently powered real time clock  
ECopyright 1995 by Dallas Semiconductor Corporation.  
All Rights Reserved. For important information regarding  
patents and other intellectual property rights, please refer to  
Dallas Semiconductor data books.  
121395 1/14  

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