PN7642 Single Chip NFC Solution NXP Semiconductors PN7642 Single Chip NFC Solution includes a high-performance NFC reader, a customizable MCU, and a security toolbox. The low-power Arm® Cortex M33-based MCU features 180kB of programmable flash memory, and the SESIP-certified security system is optimized for cryptography and secure key storage. The NXP PN7642 is highly integrated and designed to replace an additional MCU and dedicated secure element.