ST25R3911B datasheet(4/129 Pages) STMICROELECTRONICS

Il numero della parte	ST25R3911B

Spiegazioni elettronici	Automatic antenna tuning system providing tuning of antenna LC tank

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Produttore elettronici	STMICROELECTRONICS [STMicroelectronics]

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4 / 129 page

Contents

ST25R3911B

4/129

DocID029656 Rev 2

1.3.32

NFCIP Bit Rate Detection Display Register . . . . . . . . . . . . . . . . . . . . . . 98

1.3.33

A/D Converter Output Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99

1.3.34

Antenna Calibration Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . 99

1.3.35

Antenna Calibration Target Register . . . . . . . . . . . . . . . . . . . . . . . . . . 100

1.3.36

Antenna Calibration Display Register . . . . . . . . . . . . . . . . . . . . . . . . . 100

1.3.37

AM Modulation Depth Control Register . . . . . . . . . . . . . . . . . . . . . . . . 101

1.3.38

AM Modulation Depth Display Register . . . . . . . . . . . . . . . . . . . . . . . . 101

1.3.39

RFO AM Modulated Level Definition Register . . . . . . . . . . . . . . . . . . . 102

1.3.40

RFO Normal Level Definition Register . . . . . . . . . . . . . . . . . . . . . . . . . 102

1.3.41

External Field Detector Threshold Register . . . . . . . . . . . . . . . . . . . . . 103

1.3.42

Regulator Voltage Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . 104

1.3.43

Regulator and Timer Display Register . . . . . . . . . . . . . . . . . . . . . . . . . 105

1.3.44

RSSI Display Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

1.3.45

Gain Reduction State Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

1.3.46

Capacitive Sensor Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . 107

1.3.47

Capacitive Sensor Display Register . . . . . . . . . . . . . . . . . . . . . . . . . . 108

1.3.48

Auxiliary Display Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 108

1.3.49

Wake-Up Timer Control Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

1.3.50

Amplitude Measurement Configuration Register . . . . . . . . . . . . . . . . . 110

1.3.51

Amplitude Measurement Reference Register . . . . . . . . . . . . . . . . . . . 110

1.3.52

Amplitude Measurement Auto-Averaging Display Register . . . . . . . . . 111

1.3.53

Amplitude Measurement Display Register . . . . . . . . . . . . . . . . . . . . . . 111

1.3.54

Phase Measurement Configuration Register . . . . . . . . . . . . . . . . . . . . 112

1.3.55

Phase Measurement Reference Register . . . . . . . . . . . . . . . . . . . . . . 112

1.3.56

Phase Measurement Auto-Averaging Display Register . . . . . . . . . . . . 113

1.3.57

Phase Measurement Display Register . . . . . . . . . . . . . . . . . . . . . . . . 113

1.3.58

Capacitance Measurement Configuration Register . . . . . . . . . . . . . . . 114

1.3.59

Capacitance Measurement Reference Register . . . . . . . . . . . . . . . . . 114

1.3.60

Capacitance Measurement Auto-Averaging Display Register . . . . . . . 115

1.3.61

Capacitance Measurement Display Register . . . . . . . . . . . . . . . . . . . . 115

1.3.62

IC Identity Register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 116

2

Pinouts and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 117

3

Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119

3.1

Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .119

3.2

Operating conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120

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