Hardware Manual

GEM3NFC Hardware Manual

Overview and Key Features

The GEM3NFC module is been designed to allow OEMs to easily add Bluetooth, ANT+, Apple

GymKit, Samsung Galaxy Active/Active 2 and NFC reader connectivity in their product

offering.

The GEM3NFC module is based on Nordic Semicondutor’s nRF52840 multi-protocol

Bluetooth and ANT+ chipset and integrates NXP’s PN7150X NFC reader controller. There is

also space on the board for the Apple authentication 3.0 coprocessor to be mounted for

applications where Apple GymKit support is needed. The GEM3NFC module offers a serial

host interface and has a maximum transmit power of +8dBm, and a sensitivity of -95dBm.

This manual is intended to assist with hardware integration of the GEM3NFC module into a

given design. Details on North Pole Engineering’s GEMHCI protocol software can be found

at http://npe-inc.zendesk.com.

Features

• -95 dBm sensitivity

• TX Power-20 to +8dBm in 4dB steps

• 240m line of sight range @ +8dBm

• 15 mA peak TX @ 8dB, 6.2mA @ 0dBm

• 4.6 mA peak RX

• 1dB dB RSSI resolution

• ARM® Cortex

M4F 32 bit processor running at 64MHz

• 1MB embedded flash memory and 256 kB RAM

•

Serial Host Interface

• I2C Interface

• AES HW encryption

• FCC, CE, IC certified

• Integrated Bluetooth, ANT, and NFC antennas

• RoHS compliant

• Bluetooth End Product Listed

• Integrated GEMHCI software

• Integrated support for ANT+ FE and Bluetooth FTMS

• ANT+ and BLE HRM scanning and connection