The DS5230 is a highly secure, four clocks-per-machine cycle, 100% 8051-instruction-set-compatible microprocessor in the secure microcontroller family from Maxim Integrated Products. It is a feature-reduced and cost-reduced version of the popular DS5250 high-speed secure microcontroller. Its proven architecture protects embedded application software and data against reverse engineering or cloning. A key feature of the device is that it encrypts its program memory with a hardware-based single- or triple-DES (data encryption standard) algorithm and provides optional data memory encryption, 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.
主な特長
Feature-Rich, 8051-Compatible Microprocessor
Accesses Up to 64KB Program and 64KB Data Memory (All Nonvolatile)
In-System Programmable Through Serial Port
Three 16-Bit Timer/Counters
256 Bytes of Scratchpad RAM
Advanced Features
CRC-16/32 Generator
2KB Battery-Backed (Nonvolatile) Internal SRAM
Dedicated Single DES or 3DES Engine for Automatic Program Memory Encryption
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
Security Features
Executes Single/3DES-Encrypted Programs to Prevent Observation
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