DeepCover Secure Microcontroller with Rapid Zeroization Technology and Cryptography

DeepCover® embedded security solutions cloak sensitive data under multiple layers of advanced physical security to provide the most secure key storage possible.

The DeepCover Secure Microcontroller (MAXQ1851) is a low-power, 32-bit RISC device designed for electronic commerce, banking, and data security systems. It combines high-performance, single-cycle processing, sophisticated tamper-detection technology, and advanced cryptographic hardware to provide industry-leading data security and secret key protection.

Physical security mechanisms include environmental sensors that detect out-of-range voltage or temperature conditions, responding with rapid zeroization of critical data. Four self-destruct inputs are provided for additional tamper response. An internal shield over the silicon provides protection from microprobe attacks. A high-speed internal ring oscillator is provided to thwart attacks that rely on controlling the clock rate of the chip. To protect data, the MAXQ1851 integrates several high-speed, analysis-resistant encryption engines. Algorithms supported in hardware include AES (128-, 192-, and 256-bit), DES, triple-DES (2-key and 3-key), ECDSA (160-, 192-, and 256-bit keys), DSA, RSA (up to 2048 bits), SHA-1, SHA-224, and SHA-256. The advanced security features of the MAXQ1851 are designed to meet the stringent requirements of regulations such as ITSEC E3 High, FIPS 140-2 Level 3, and the Common Criteria certifications.

The MAXQ1851 includes 256KB of flash memory, 8KB of data SRAM, 4KB of AES encryptable secure battery-backed data SRAM, and 256-bit flip-flop based secure AES key storage. Several communication protocols are supported with hardware engines, including ISO 7816 for smart card applications, USB (slave interface with four end-point buffers), an RS-232 universal synchronous/asynchronous receiver-transmitter (USART), an SPI interface (master or slave mode support), and up to 16 general-purpose I/O pins. Other peripherals supported on the MAXQ1851 include a true hardware random-number generator (RNG), a real-time clock (RTC), a programmable watchdog timer, and flexible 16-bit timers that support capture, compare, and pulse-width modulation (PWM) operations.

Applications

* ATM Keyboards * Certificate Authentication * Electronic Commerce * Electronic Signature Generator * EMV® Banking * Pay-per-Play * PCI Terminals * PIN Pads * Secure Access Control * Secure Data Storage

* High-Performance, Low-Power, 32-Bit MAXQ30 RISC Core

* Single 3.3V Supply Enables Low Power/Flexible Interfacing

* DC to 16MHz Code Execution Across Entire Operating Range

* On-Chip 2x/4x Clock Multiplier

* 33 Instructions

* 16-Bit Instruction Word, 32-Bit Internal Data Bus

* 16 x 32-Bit Accumulators

* Virtually Unlimited Software Stack

* Optimized for C-Compiler (High-Speed/Density Code)

* Security Features

* 65MHz Cryptography Engine Execution to Reduce Processing Time

* Unique ID

* Tamper Detection with Fast Wipe Key/Data Destruction

* 4 Self-Destruct Inputs

* Hardware AES and DES Engines

* Public Key Cryptographic Accelerator for DSA, ECDSA, and RSA

* Supports SHA-1, SHA-224, and SHA-256

* True Hardware RNG and PRNG

* Unalterable, Battery-Backed RTC

* Hardware CRC-32/16

* Memory

* 256KB Flash, Composed of 2048-Byte Pages (20K Erase/Write Cycles per Sector)

* 8KB SRAM, 4KB Battery-Backed SRAM

* 256-Bit, Battery-Backed, Flip-Flop-Based Secure Key Storage

* Dedicated Cryptographic Memory Space

* I/O and Peripherals

* Up to 16 General-Purpose I/O Pins

* 5V Tolerant I/O

* Power-Fail Warning

* Power-On Reset/Brownout Reset

* JTAG I/F for System Programming and Accessing On-Chip Debugger

* USB I/F with Four End-Point Buffers

* ISO 7816 Smart Card UART with FIFO

* 4 16-Bit Timer/Counters, Two with PWM Function

* SPI and USART Communication Ports

* Programmable Watchdog Timer

* Low-Power Consumption

* 550nA typ Current Draw in Battery-Backed Mode, Preserving 4KB AES Encryptable NV SRAM and 256-Bit Flip-Flop-Based Secure Master Key Storage, with Security Sensors Active (1.5µA with RTC and Active Die Shield Enabled)