ST ST21NFCDXBGARA7

The ST21NFCD is a single NFC controller IC designed for integration in mobile devices and NFC compliant products. It includes NFC functions in the three operating modes: Card Emulation, Reader/Writer and Peer to Peer communication. This product is based on an advanced ARM Cortex - M3 32 - bit microcontroller running at 28 MHz. All internal operations are synchronized by a Clock Generator module. Two clock source options are available: using an external Quartz. using an external reference clock (in order to reduce the number of external components). Thanks to an enhanced power switch system, the ST21NFCD manages the power supply of the device and its associated Secure Elements. The ST21NFCD supports NCI 2.0.

• ARM Cortex - M3 microcontroller
• eFlash for full firmware update
• Enhanced Active load modulation technology
• Enhanced TX drive up to 1.3 W
• Compatible with extremely small or metal frame antennas
• Optimized power consumption modes
• Battery voltage monitoring
• System clock: FracN PLL input range from 13 to 76.8 MHz, 27.12 MHz external crystal oscillator
• Integrated PMU: LDOs for internal voltages, 2 x LDOs for external voltages, Voltage detectors for supplies monitoring, Low power mode state machine
• Automatic Wake - Up via communication interfaces, internal timers, GPIO, RF field or tag detection
• Support of an external DC/DC converter for TX supply
• Secure firmware update mechanism
• Two SWP master interfaces up to 1.695 Mbit/s
• I²C slave interface up to 3.4 MHz
• Slave and master SPI interface (up to 13 MHz)
• HSUART interface up to 6 Mbit/s

• Mobile devices
• Wearable devices
• SmartWatch
• Secure Connected Devices