AS3909-BQTT 查看數據表（PDF） - austriamicrosystems AG

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AS3909-BQTT

13.56 MHz RFID Reader IC, ISO-14443 A/B

austriamicrosystems AG 

Reference Guide

Reference Guide

1 General Description

2 Key Benefits & Features

3 Applications

3 Block Diagram

4 Pin Assignments

6 Absolute Maximum Ratings

7 Electrical Characteristics

7 Operating Conditions

7 DC / AC Characteristics For Digital Inputs and Outputs

8 Electrical Specification

10 Detailed Description

11 Transmitter

11 Receiver

11 Phase and Amplitude Detector

11 A/D Converter

12 External Field Detector

12 Quartz Crystal Oscillator

12 Power Supply Regulators

12 POR and Bias

13 ISO-14443 and NFCIP Framing

13 FIFO

13 Control Logic

13 SPI Interface

14 Application Information

14 Operating Modes

14 Transmitter

15 Receiver

16 Gain Reduction, AGC and Squelch

16 Automatic Gain Reduction (AGC)

16 Squelch

17 Setting Gain Reduction in Receiver Configuration Register

(#06)

17 RSSI

17 AM and PM Demodulation

18 A/D Converter

18 Phase and Amplitude Detector

18 Phase Detector

18 Antenna Tuning Check

19 PM Demodulation

19 Amplitude Detector

19 External Field Detector

19 Target Activation Detector

19 RF Collision Avoidance Detector

20 Quartz Crystal Oscillator

21 Power Supply, Regulators

22 Communication to External Microcontroller

22 Serial Peripheral Interface (SPI)

23 SPI Operation MODE Bits

24 Writing of Data to Addressable Registers (WRITE Mode)

ams Datasheet, Confidential: 2013-Oct [3-02]

AS3909/AS3910 – 75

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