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(Supplied, recycled) ST21NFCJDBGWRA7 (ST) Supports an active load modulated booster NFC controller.

Overview:

The ST21NFCJ is a single Near Field communication (NFC) controller IC designed for integration in mobile devices and NFC-compatible products. It includes NFC functions in three operating modes: card emulation, reader, and peer-to-peer communication.

The product is based on an advanced ARM®Cortex®-M3 32-bit microcontroller that operates at 28 MHz. All internal operations are synchronized by the clock generator module.

Two clock source options are available:

• Use external quartz.

• Use external reference clocks (to reduce the number of external components).

Thanks to an enhanced power switching system, the ST21NFCJ manages the power supply to the device and its associated safety components.

Features:

•ARM®Cortex®-M3 microcontroller

•eFlash is used for full firmware updates

• Enhanced active load modulation technology

• Enhanced TX drives up to 1.3W

• Compatible with minimal or metal frame antennas

• Optimized power consumption mode

• Battery voltage monitoring

• System clock

FRACN Phase locked loop (PLL) Input range: 13 to 76.8 MHz

- 27.12 MHz external crystal oscillator

• Integrated Power Management Unit (PMU)

- Low Voltage Difference (LDO) regulator for internal voltage

- 2 x LDO regulator for external voltage

- Voltage detector for power monitoring

- Low power mode state machine

Automatic wake up via communication interface, internal timer, universal input/output (GPIO), RF field or tag detection

• Support for external DC/DC converters for TX power supplies

Target application

• Mobile devices

• Wearable devices

• Smart watch

• Protect connected devices

If necessary, please contact Mr. Chen for consultation:

Email: sales@hkmjd.com

Company website: www.hkmjd.com