NB 1.3-12 is a family of Cortex-M0+ based microcontrollers, specifically developed for a wide variety of Internet of Things (IoT) applications. It offers an optimal combination of low-power consumption, secure data processing with TrustZone, and also provides adaptable, secure, and more cost-effective embedded solutions. It contains features such as energy efficient 32-bit MCU and flash memory to allow users to process secure data at a very low cost. Furthermore, thanks to its fast real-time capability, NB 1.3-12 can be used in applications that need real-time performance.