With an integrated H-Bridge and energy harvesting modules, a smart actuator can be implemented in a single-chip solution with minimal components required. Infineon Technologies AG has developed a new programmable 32-bit ARM Cortex-M0 microcontroller (MCU) with built-in
near field communication (NFC) interface to enable the cost-effective development of smart actuators such as passive locks.

Using the NFC interface, the NAC1080 MCU allows devices to be controlled directly by smartphones. To activate the lock, the mobile phone

the phone must be held directly on it. Near Field Communication (NFC) is used to verify that the device is actually authorized to open the lock. This is where encryption technology comes in. At the same time, energy is transferred contactlessly to a capacitor that opens or closes the lock.

Advanced on-premises and cloud-based features can be extended to the mobile app offered by regional marketing partners. This reduces material consumption and supports a miniature product design. The NAC1080 supports different operating modes and can be powered either in passive mode by the NFC field with the energy collected from the mobile phone, or by battery power in active mode. The NAC1080 also provides an integrated AES128 accelerator and true random generator to enable data encryption/decryption in an ultra-low power environment.

Besides the passive NFC lock application, the NAC1080 can also be used as an emergency backup power application. Active locking systems, for example, depend on battery power. If they are discharged, the NFC interface IC for electronic devices can power the door lock. Since electrical energy is transmitted via NFC, this use case may take longer to charge the capacitor than in passive mode. In both cases, charging will take just seconds.

In the Greater China region, Infineon is working together with IH Tech and FIoT-Open Lab to offer complete NAC1080-based smart NFC locking solutions combining IC products, application development, IoT device testing, certification and standardization. This collaboration allows the three companies to support local customers to accelerate the system development cycle and foster ecosystem development together.

Infineon, 2 E 3rd Ave., San Mateo, CA 94401, www.infineon.com/NAC1080.


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