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DS5250_04

更新时间: 2024-02-01 14:08:11
品牌 Logo 应用领域
美信 - MAXIM 微控制器
页数 文件大小 规格书
4页 131K
描述
High-Speed Secure Microcontroller

DS5250_04 数据手册

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A Non-Disclosure Agreement (NDA) is required for full disclosure of details. Contact factory for more information.  
DS5250  
High-Speed Secure Microcontroller  
www.maxim-ic.com  
GENERAL DESCRIPTION  
Cꢀ Advanced Features  
The DS5250 is a highly secure, 4 clocks-per-machine  
cycle, 100% 8051-instruction-set-compatible  
microprocessor in the Secure Microcontroller family  
from Dallas Semiconductor. It was designed to be the  
cryptographic engine of PIN pads, financial terminals,  
and any other application in which data security is  
paramount. A key feature of the device is that it  
encrypts its program memory with a hardware-based  
single or triple (3) DES (data encryption standard)  
algorithm, making it nearly impossible to extract  
information. Another DES (3DES) hardware block is  
available to the user for encrypting arbitrary information  
in data memory space. This makes the device ideal for  
storage and transmission of passwords, personal  
identification numbers, encryption keys, and other highly  
confidential information.  
CRC-16/32 Generator  
5kB Internal SRAM (Optional 1kB Stack)  
Single or 3DES Engine  
Partitionable Memory Segments Variable from 4kB to  
256kB  
Cꢀ High-Speed Architecture  
4 Clocks-per-Machine Cycle  
DC-to-25MHz Operation  
Single-Cycle Instruction in 160ns  
Dual Data Pointers can Increment or Decrement  
Independently  
Automatic Data Pointer Selection Available  
Programmable Speed MOVX Instructions  
1kB On-Chip Instruction Cache  
Cꢀ High-Reliability Operation  
Power-Fail/Overvoltage Reset  
Early-Warning Power-Fail Interrupt  
Watchdog Timer  
APPLICATIONS  
PIN Pads  
Cꢀ Nonvolatile Functions  
Financial Terminals  
On-Chip Real-Time Clock with Alarm Interrupt  
2kB Battery-Backed Internal SRAM  
Applications that Require Data Security  
Cꢀ Security Features  
ORDERING INFORMATION  
Designed to Meet the Physical Security Requirements  
of FIPS-140 and Common Criteria Certifications  
Program Memory Integrity Checking  
Executes Single/3DES-Encrypted Programs to  
Prevent Observation  
MAX  
CLOCK  
PART  
TEMP RANGE  
PIN-PACKAGE  
SPEED  
(MHz)  
Separate Program/Data Cryptograph  
Two Self-Destruct Inputs  
DS5250F-825  
DS5250F-125  
DS5250F-8N5  
DS5250F-1N5  
0°C to +70°C  
0°C to +70°C  
-40°C to +85°C  
-40°C to +85°C  
25  
25  
25  
25  
80 Plastic MQFP  
100 Plastic MQFP  
80 Plastic MQFP  
100 Plastic MQFP  
4096-Bit Modulo-Arithmetic Accelerator (MAA) for PKI  
Operations  
Built-In Sensors Detect Attack and Cause Security  
Response  
Pin Configurations appear on page 2.  
Programmable Attack Countermeasures  
Secure Bootstrap Loader  
FEATURES  
Cꢀ Drop-In Upgrade to the Dallas DS5240  
True Random-Number Generator (RNG)  
Unique ID Number in Every Device  
Cꢀ Feature-Rich, 8051-Compatible, Highly Secure  
Microcontroller  
Accesses Up to 4MB Program and 4MB Data Memory  
(All Nonvolatile)  
In-System Programmable through Serial Port  
In-Application Programmable through User Software;  
Allows Self-Modification of Program/Data Memory  
Four 8-Bit Ports/One 6-Bit Port  
Three 16-Bit Timer/Counters  
256 Bytes of Scratchpad RAM  
Note: Some revisions of this device may incorporate deviations from published specifications known as errata. Multiple revisions of any device  
may be simultaneously available through various sales channels. For information about DS5250 errata, contact the factory.  
1 of 3  
REV: 071803  

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