Secure Cortex-M3 flash MCU for mobile transactions

June 12, 2015 // By Graham Prophet
Maxim Integrated has posted details of the MAX32555, describing it as the first secure SoC microcontroller for mPOS (mobile point-of-sale) applications, that also has a with secure boot loader with PKA (public key authentication)

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.


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