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X-NUCLEO-NFC05A1

Description
NUCLEO BOARD
CategoryDevelopment board/suite/development tools   
File Size1MB,131 Pages
ManufacturerSTMicroelectronics
Websitehttp://www.st.com/
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X-NUCLEO-NFC05A1 Overview

NUCLEO BOARD

X-NUCLEO-NFC05A1 Parametric

Parameter NameAttribute value
platformNucleo
typeRF
FunctionNFC
IC/parts usedST25R3911B
contentplate
ST25R3911B
High performance HF reader / NFC initiator
with 1.4 W supporting VHBR and AAT
Datasheet
-
production data
Description
The ST25R3911B is a highly integrated NFC
Initiator / HF Reader IC, including the analog front
end (AFE) and a highly integrated data framing
system for ISO 18092 (NFCIP-1) initiator, ISO
18092 (NFCIP-1) active target, ISO 14443A and
B reader (including high bit rates), ISO 15693
reader and FeliCa™ reader. Implementation of
other standard and custom protocols like
MIFARE™ Classic is possible using the AFE and
implementing framing in the external
microcontroller (Stream and Transparent modes).
The ST25R3911B is positioned perfectly for the
infrastructure side of the NFC system, where
users need optimal RF performance and flexibility
combined with low power.
Thanks to automatic antenna tuning (AAT)
technology, the device is optimized for
applications with directly driven antennas. The
ST25R3911B is alone in the domain of HF reader
ICs as it contains two differential low impedance
(1 Ohm) antenna drivers.
The ST25R3911B includes several features that
make it very suited for low power applications. It
contains a low power capacitive sensor that can
be used to detect the presence of a card without
switching on the reader field. The presence of a
card can also be detected by performing a
measurement of amplitude or phase of signal on
antenna LC tank, and comparing it to the stored
reference. It also contains a low power RC
oscillator and wake-up timer that can be used to
wake up the system after a defined time period,
and to check for the presence of a tag using one
or more low power detection techniques
(capacitive, phase or amplitude).
The ST25R3911B is designed to operate from a
wide (2.4 V to 5.5 V) power supply range;
peripheral interface IO pins support power supply
range from 1.65 V to 5.5 V.
QFN32
Wafer
Features
ISO 18092 (NFCIP-1) Active P2P
ISO14443A, ISO14443B, ISO15693 and
FeliCa™
Supports VHBR (3.4 Mbit/s PICC to PCD
framing, 6.8 Mbit/s AFE and PCD to PICC
framing)
Capacitive sensing - Wake-up
Automatic antenna tuning system providing
tuning of antenna LC tank
Automatic modulation index adjustment
AM and PM (I/Q) demodulator channels with
automatic selection
DPO (Dynamic Power Output)
Up to 1.4 W in case of differential output
User selectable and automatic gain control
Transparent and Stream modes to implement
MIFARE™ Classic compliant or other custom
protocols
Possibility of driving two antennas in single
ended mode
Oscillator input capable of operating with 13.56
MHz or 27.12 MHz crystal with fast start-up
6 Mbit/s SPI with 96 bytes FIFO
Wide supply voltage range from 2.4 V to 5.5 V
Wide temperature range: -40 °C to 125 °C
QFN32, 5 mm x 5 mm package
February 2018
This is information on a product in full production.
DS11793 Rev 4
1/131
www.st.com

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type RF Reader module

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