Globalstar ST150 - Peripherals; Near-Field Communication (NFC); GPIO Pin Peripherals

9150-0125-01 R-4
ST150M User Manual
Confidential & Proprietary Information
18
4 PERIPHERALS
4.1 NEAR-FIELD COMMUNICATION (NFC)
There are two GPIO pins (P0.09/NFC1 and P0.10/NFC2) on the ST150M that can be configured to be a NFC
listening device. The operating frequency is 13.56MHz and the bit rate is 106kbps.
There are many NFC antennas on the market, but one that's been tested with the ST150M is Nordic
Semiconductor's flex PCB NFC antenna. More details can be found on Nordic's website. When doing PCB layout,
the NFC traces should be routed as a differential pair.
4.2 GPIO PIN PERIPHERALS
The following GPIO pins can be configured to whatever Nordic processor peripheral is desired.
The peripherals are listed below and go into some detail.
P0.02/AIN0
P0.03/AIN1
P0.04/AIN2
P0.05/AIN3
P0.28/AIN4
P0.29/AIN5
P0.30/AIN6
P0.31/AIN7
P0.09/NFC1
P0.10/NFC2
P0.16
P0.24
P0.25
P1.01
P1.02
P1.03
P1.04
P1.05
P1.06
P1.07
P1.10
P1.12
P1.14
P1.15