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DS5250: High-Speed Secure Microcontroller Data Sheet (Rev. 4)11/12/2008PDF53K
Overview
Features and Benefits
- Feature-Rich, 8051-Compatible Microprocessor
- 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
- Advanced Features
- CRC-16/32 Generator
- 5KB Internal SRAM (Optional 1KB Stack)
- Single or 3DES Engine
- Partitionable Memory Segments Variable from 4KB to 256KB
- High-Speed Architecture
- Four Clocks-per-Machine Cycle
- DC-to-25MHz Operation
- Single-Cycle Instruction in 160ns
- Dual Data Pointers Can Increment or Decrement Independently
- Automatic Data Pointer (DPTR) Selection Available
- Programmable Speed MOVX Instructions
- 1KB On-Chip Instruction Cache
- High-Reliability Operation
- Power-Fail/Overvoltage Reset
- Early-Warning Power-Fail Interrupt
- Watchdog Timer
- Nonvolatile Functions
- On-Chip Real-Time Clock with Alarm Interrupt
- 2KB Battery-Backed Internal SRAM
- Interrupts
- 15 Interrupts with Seven External Sources
- Security Features
- Executes Single/3DES-Encrypted Programs to Prevent Observation
- Two Self-Destruct Inputs
- 4096-Bit Modulo-Arithmetic Accelerator (MAA) for Public/Private Key Operations
- Tamper Sensors Detect Thermal/Voltage/Probe Attacks
- Programmable Attack Countermeasures
- Secure-Loader Mode
- True Random-Number Generator (RNG)
- Unique ID Number in Every Device
- Separate Program/Data Cryptograph
- Program Memory Integrity Checking
- Evaluation Kit Available (DS5250-KIT)
Product Details
The DS5250 is a highly secure, four clocks-per-machine cycle, 100% 8051-instruction-set-compatible microprocessor in Maxim's secure microcontroller family. 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 and optionally its data memory with a hardware-based single-or triple-DES (data encryption standard) algorithm, making it almost impossible to extract information. It also implements block cipher encoding that uses block addresses to modify the encrypted data, further strengthening security. This makes the device ideal for storage and transmission of passwords, personal identification numbers, encryption keys, and other highly confidential information.
Note: Designers must have the following documents to fully use all the features of this device. This data sheet contains pin descriptions, feature overviews, and electrical specifications. Errata sheets contain deviations from published specifications. The user's guides offer detailed information about device features and operation.
- DS5250 IC data sheet
- DS5250 revision-specific errata sheet (Click here for availability)
- High-Speed Microcontroller User's Guide
- High-Speed Microcontroller User's Guide: DS5250 Supplement
Applications
- Applications that Require Data Security
- Financial Terminals
- PIN Pads
Product Categories
Product Lifecycle
Last Time Buy
All products in this family will be obsolete soon. Please contact ADI Sales or Distributors to arrange for final purchases and read our Obsolescence Information to review the time periods for placing final orders and receiving final shipments.
Evaluation Kits (1)
Documentation & Resources
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DS5250 Reliability Data1/12/2023PDF10K
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UG-4827: High-Speed Microcontroller User's Guide6/1/2010PDF3M
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UG-4312: Getting Started with DeepCover Secure Microcontroller (MAXQ1850) EV KIT and the CrossWorks Compiler for the MAXQ3010/17/2008PDF481K
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UG-4273: Getting Started with the DeepCover Secure Microcontroller (MAXQ1103) Evaluation Kit and the CrossWorks Compiler for the MAXQ309/22/2008PDF243K
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Getting Started with the DS8007 Evaluation Kit5/22/2007
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Interfacing 8051-based Microcontrollers to an SCI Port12/17/2004
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Using the Keil µVision Debugger with the DS52x0 Secure Microcontrollers10/14/2004
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In-System Programming with 8051-Based Microcontrollers8/10/2004
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Configuring Keil PK51 Tools to Support 24-Bit Contiguous Addressing Mode6/20/2002
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Data Pointer Decrement Feature Simplifies Copy Operation for Overlapping Memory Buffers4/3/2002
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Implementing a Serial Port FIFO Using Dual Data Pointers3/12/2002
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Using the High-Speed Micro's Serial Ports3/29/2001
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Modulo Exponentiation Timing with the DS5250 Microcontroller5/14/2009
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RSA Key Generation Using the DeepCover Secure Microcontroller (MAXQ1103)12/19/2008
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Interfacing the DS5250 with a Magnetic Stripe Card Reader9/12/2007
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RSA Key Generation in DS52503/19/2007
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Using the DS87C530/DS5250 Real-Time Clock3/29/2001
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Using a EconOscillator™ to Clock an 8051 Microprocessor5/16/2008
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The DS8007 and Smart Card Interface Fundamentals12/5/2007
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Using the DS8007 In Smart-Card Transactions10/12/2007
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Increasing System Security by Using the DS5250 as a Secure Coprocessor9/16/2004
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Using the Keil C Compiler for the DS525010/20/2003
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Using the DS5250 as a Drop-In Upgrade for the DS50026/29/2003
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The Fast 8051 Microcontroller: Leading the Way in Growth and Innovation6/29/2003
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SRAM-Based Microcontroller Optimizes Security6/27/2003
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Interfacing the DS2760 1-Wire High-Precision Li-Ion Battery Monitor and Protection IC in a Microcontroller Environment8/27/2002
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Micro Tutorial 1: Understanding DC Electrical Characteristics of Microcontrollers6/4/2002
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Design Guidelines for Microcontrollers Incorporating NV RAM5/1/2001
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Using Power Management with High-Speed Microcontrollers3/29/2001
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High-Speed Micro Memory Interface Timing3/29/2001
Design Resources
ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal.
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