Secure Cortex-M3 flash MCU for mobile transactions
Maxim uses the branding “DeepCover” for its embedded security solutions that conceal sensitive data under multiple layers of advanced physical security to provide the most secure key storage possible.
The DeepCover Secure microcontroller provides an interoperable, secure, and cost-effective solution to build new generations of trusted devices such as mobile chip-and-pin pads. The MAX32555 is based on an ARM Cortex M3 processor with 512 kB of embedded flash, 96 kB of system RAM, and 1 kB of battery-backed AES self-encrypted NVSRAM. It includes all the essential functions of mobile POS terminal including a cryptographic engine, a true random number generator, battery-backed RTC, environmental and tamper detection circuitry, a magnetic stripe reader, a smart card controller with embedded transceiver to directly support 1.8V, 3.3V, and 5V cards, and an integrated secure keypad controller. It also includes a comprehensive array of peripherals, SPIs, UARTs, DMA, ADC, and DAC that add flexibility to control and differentiate the system design.
Maxim; www.maximintegrated.com/en/products/digital/microcontrollers/MAX32555
Next page; feature listing…
MAX32555 features include;
ARM Cortex M3 processor core allows for easy integration into applications
60 MHz core operating frequency through PLL
512 MB dual-bank flash memory with cache
96 kB system SRAM
1 kB AES self-encrypted NVSRAM
Security features facilitate system-level protection
Secure boot loader with public key authentication
AES, DES and SHA hardware accelerators
Modulo arithmetic hardware accelerator (MAA) supporting RSA, DSA, and ECDSA
8-line secure keypad controller
Hardware true random-number generator
Die shield with dynamic fault detection
4 external tamper sensors with independent random dynamic patterns
256-bit flip-flop-based battery-backup AES key storage
Temperature and voltage tamper monitor
Real-time clock
Integrated peripherals reduce external component count
Triple-track magnetic stripe head interface
One ISO 7816 smart card interface with integrated transceiver (1.8V, 3V, and 5V)
USB 2.0 device with internal transceiver and dedicated PLL
3 SPI ports, 3 UART ports, and 1 I²C controller
8 timers, all with PWM capability
Up to 70 general-purpose I/O pins
6-channel, 10-bit ADC and 1-Channel, 8-bit DAC
Monochrome LCD controller
4-channel DMA controller
Power management optimises battery life and reduces active power consumption
Single 3.3V supply operation
Integrated battery-backup switch
Clock gating function
Low-current battery-backup operation
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