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ST25R3911B Datasheet(PDF) 2 Page - STMicroelectronics

Part # ST25R3911B
Description  High performance HF reader / NFC initiator with 1.4 W supporting VHBR and AAT
PDF  116 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST25R3911B Datasheet(HTML) 2 Page - STMicroelectronics

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1
Functional overview
The ST25R3911B is suitable for a wide range of applications, among them
•
E-government
•
Access control
•
Payment, EMVCo™ 2.6b
•
NFC infrastructure
•
Ticketing
1.1
Block diagram
The block diagram is shown in Figure 1.
Figure 1. ST25R3911B block diagram
ST25R3911B
Logic
XTO XTI
RFO1
RFI1
RFI2
SPI
VDD
CSI
CSO
VDD_IO
RFO2
IRQ
MCU_CLK
TRIMx
Receiver
Transmitter
Regulators
A/D
converter
XTAL
oscillator
POR
and
Bias
External
field
detector
Capacitive
sensor
RC
oscillator
Level
shifters
Phase and
amplitude
detector
FIFO
Control
logic
SPI
Framing
Wake-Up
timer
ST25R3911B
Functional overview
DS11793 - Rev 6
page 2/116



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