Maxim Integrated Secure Microcontroller - Manual (Page 10)

Secure Microcontroller User’s Guide
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The DS5001FP provides the base feature set of the DS5000FP with the following extras. Note that the
DS5001FP has no memory encryption feature.
 Accesses up to 128kB on the bytewide bus
 Decodes memory for 32kB x 8 or 128kB x 8 SRAMs
 Four additional decoded peripheral-chip enables
 CRC hardware for checking memory validity
 Optionally emulates an 8042-style slave interface
 Bandgap reference for more accurate power monitor
DS2251T 128kB Soft Microcontroller Module (Discontinued)
The DS2251T is a SIMM based on the DS5001. It provides up to 128kB of on-board NV RAM and has
the bytewide bus available at the connector. This is used with the decoded peripheral enables for
memory-mapped peripherals such as a UART or ADC. The parallel-access RTC has interrupt capability.
Like the older versions, the DS2251T provides 10-year data retention, even in the largest memory
configuration.
DS5002FP Secure Microprocessor Chip
The DS5002FP is a highly secure version of the DS5001FP. It provides the operating features of the
DS5001FP, with the following enhancements to the DS5000 security features.
 Security is active at all times
 Improved memory encryption using an 80-bit encryption key
 Automatic random generation of encryption keys
 Self-destruct input for tamper protection
 Optional top-coating prevents microprobe (DS5002FPM)
DS2252T Secure Microcontroller Module (Discontinued)
The DS2252T incorporates the DS5002FP on a 40-pin SIMM. This includes from 32kB to 128kB of
secure memory with an RTC. The memory is highly secure from tampering and from competitors. Like
other products in the family, the D2252T has a data retention period of over 10 years at room
temperature.
1.4 Introduction to the DS5250 High-Speed Secure Microcontroller
The highest performance, most secure microcontroller available is the DS5250 high-speed secure
microcontroller. A member of the High-Speed Microcontroller family, the DS5250 device is a security
and performance enhanced version of the DS5002FP with the following features. More information about
it can be found on our website,
www.maximintegrated.com/DS5250 .
Security Features
• Designed to meet the physical security requirements of FIPS140 and Common Criteria certifications
• SRAM technology allows rapid “zeroization” of secure information as a tamper response
• Microprobe shield triggers tamper response if cryptographic boundary pentrated
• Environmental sensors trigger tamper response detect out-of-range conditions
• The equipment enclosure can be monitored by tamper response inputs for added protection
• External memory bus protected by single or triple-DES encryption
• Modulo Arithmetic Accelerator (MAA) for up to 4096-bit (e.g., PKI)
• DES and 112-bit key triple-DES engines available for secret key cryptography