ST25R3911B-DISCO datasheet, PDF

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ST25R3911B-DISCO: DescriptionDISCOVERY KIT FOR ST25R3911B; CategoryDevelopment board/suite/development tools; File Size1MB，131 Pages; ManufacturerSTMicroelectronics; Websitehttp://www.st.com/

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ST25R3911B-DISCO Overview

DISCOVERY KIT FOR ST25R3911B

ST25R3911B-DISCO Parametric

Parameter Name	Attribute value
type	Reader module
frequency	13.56MHz
Supporting products/related products	ST25R3911B
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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

Contents

ST25R3911B

Contents

Functional overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1.1

Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

1.1.1

1.1.2

1.1.3

1.1.4

1.1.5

1.1.6

1.1.7

1.1.8

1.1.9

1.1.10

1.1.11

1.1.12

1.1.13

1.1.14

Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Phase and amplitude detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

A/D converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Capacitive sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

External field detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Quartz crystal oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Power supply regulators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

POR and Bias . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

RC oscillator and Wake-Up timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

ISO-14443 and NFCIP-1 framing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

FIFO . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Control logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

SPI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Operating modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Transmitter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

Capacitive sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Wake-Up mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

Quartz crystal oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Timers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

A/D converter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

Phase and amplitude detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

External field detector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Power supply system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Communication with an external microcontroller . . . . . . . . . . . . . . . . . . 32

Direct commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Start timers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Test access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

Power-up sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Reader operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

1.2

Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

1.2.1

1.2.2

1.2.3

1.2.4

1.2.5

1.2.6

1.2.7

1.2.8

1.2.9

1.2.10

1.2.11

1.2.12

1.2.13

1.2.14

1.2.15

1.2.16

1.2.17

2/131

DS11793 Rev 4

ST25R3911B

1.2.18

1.2.19

1.2.20

1.2.21

1.2.22

Contents

FeliCa™ reader mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57

NFCIP-1 operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

AM modulation depth: definition and calibration . . . . . . . . . . . . . . . . . . 63

Antenna tuning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67

Stream mode and Transparent mode . . . . . . . . . . . . . . . . . . . . . . . . . . 68

IO Configuration Register 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 76

IO Configuration Register 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

Operation Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78

Mode Definition Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79

Bit Rate Definition Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80

ISO14443A and NFC 106kb/s Settings Register . . . . . . . . . . . . . . . . . . 81

ISO14443B Settings Register 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82

ISO14443B and FeliCa Settings Register . . . . . . . . . . . . . . . . . . . . . . . 83

Stream Mode Definition Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84

Auxiliary Definition Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85

Receiver Configuration Register 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Receiver Configuration Register 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

Receiver Configuration Register 3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

Receiver Configuration Register 4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88

Mask Receive Timer Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89

No-Response Timer Register 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

No-Response Timer Register 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

General Purpose and No-Response Timer Control Register . . . . . . . . . 91

General Purpose Timer Register 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

General Purpose Timer Register 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92

Mask Main Interrupt Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93

Mask Timer and NFC Interrupt Register . . . . . . . . . . . . . . . . . . . . . . . . 93

Mask Error and Wake-Up Interrupt Register . . . . . . . . . . . . . . . . . . . . . 94

Main Interrupt Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94

Timer and NFC Interrupt Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95

Error and Wake-Up Interrupt Register . . . . . . . . . . . . . . . . . . . . . . . . . . 96

FIFO Status Register 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

FIFO Status Register 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97

Collision Display Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98

Number of Transmitted Bytes Register 1 . . . . . . . . . . . . . . . . . . . . . . . . 98

Number of Transmitted Bytes Register 2 . . . . . . . . . . . . . . . . . . . . . . . . 99

1.3

Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73

1.3.1

1.3.2

1.3.3

1.3.4

1.3.5

1.3.6

1.3.7

1.3.8

1.3.9

1.3.10

1.3.11

1.3.12

1.3.13

1.3.14

1.3.15

1.3.16

1.3.17

1.3.18

1.3.19

1.3.20

1.3.21

1.3.22

1.3.23

1.3.24

1.3.25

1.3.26

1.3.27

1.3.28

1.3.29

1.3.30

1.3.31

DS11793 Rev 4

3/131

Contents

1.3.32

1.3.33

1.3.34

1.3.35

1.3.36

1.3.37

1.3.38

1.3.39

1.3.40

1.3.41

1.3.42

1.3.43

1.3.44

1.3.45

1.3.46

1.3.47

1.3.48

1.3.49

1.3.50

1.3.51

1.3.52

1.3.53

1.3.54

1.3.55

1.3.56

1.3.57

1.3.58

1.3.59

1.3.60

1.3.61

1.3.62

ST25R3911B

NFCIP Bit Rate Detection Display Register . . . . . . . . . . . . . . . . . . . . . . 99

A/D Converter Output Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100

Antenna Calibration Control Register . . . . . . . . . . . . . . . . . . . . . . . . . 100

Antenna Calibration Target Register . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Antenna Calibration Display Register . . . . . . . . . . . . . . . . . . . . . . . . . 101

AM Modulation Depth Control Register . . . . . . . . . . . . . . . . . . . . . . . . 102

AM Modulation Depth Display Register . . . . . . . . . . . . . . . . . . . . . . . . 102

RFO AM Modulated Level Definition Register . . . . . . . . . . . . . . . . . . . 103

RFO Normal Level Definition Register . . . . . . . . . . . . . . . . . . . . . . . . . 103

External Field Detector Threshold Register . . . . . . . . . . . . . . . . . . . . . 104

Regulator Voltage Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . 105

Regulator and Timer Display Register . . . . . . . . . . . . . . . . . . . . . . . . . 106

RSSI Display Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

Gain Reduction State Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Capacitive Sensor Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

Capacitive Sensor Display Register . . . . . . . . . . . . . . . . . . . . . . . . . . 109

Auxiliary Display Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

Wake-Up Timer Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110

Amplitude Measurement Configuration Register . . . . . . . . . . . . . . . . . 111

Amplitude Measurement Reference Register . . . . . . . . . . . . . . . . . . . 111

Amplitude Measurement Auto-Averaging Display Register . . . . . . . . . 112

Amplitude Measurement Display Register . . . . . . . . . . . . . . . . . . . . . . 112

Phase Measurement Configuration Register . . . . . . . . . . . . . . . . . . . . 113

Phase Measurement Reference Register . . . . . . . . . . . . . . . . . . . . . . 113

Phase Measurement Auto-Averaging Display Register . . . . . . . . . . . . 114

Phase Measurement Display Register . . . . . . . . . . . . . . . . . . . . . . . . 114

Capacitance Measurement Configuration Register . . . . . . . . . . . . . . . 115

Capacitance Measurement Reference Register . . . . . . . . . . . . . . . . . 115

Capacitance Measurement Auto-Averaging Display Register . . . . . . . 116

Capacitance Measurement Display Register . . . . . . . . . . . . . . . . . . . . 116

IC Identity Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

Pinouts and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118

Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

3.1

3.2

Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

Operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121

4/131

DS11793 Rev 4

ST25R3911B-DISCO Related Products

	ST25R3911B-DISCO	X-NUCLEO-NFC05A1
Description	DISCOVERY KIT FOR ST25R3911B	NUCLEO BOARD
type	Reader module	RF

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