Datasheet > ATA5570

ATA5570

更新时间： 2022-12-27 23:39:15

品牌	Logo	应用领域
爱特美尔 - ATMEL		传感器射频
页数	文件大小	规格书
28页	570K
描述
Multifunctional 330-bit Read/Write RF Sensor Identification IC

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数据手册

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ATA5570 数据手册

ATA5570 [Preliminary]

4. ATA5570 – Building Blocks

Figure 4-1. Block Diagram

R_S

SENS

VSS

POR

Modulator

COIL1

C_R

Mode register

Controller

Memory

(264 bit

EEPROM)

Input register

HV generator

COIL2

Test logic

4.1

Analog Front End (AFE)

The AFE includes all circuits which are directly connected to the coil. It generates the IC’s power

supply and handles the bi-directional data communication with the reader. It consists of the fol-

lowing blocks:

• Rectifier to generate a DC supply voltage from the AC coil voltage

• Clock extractor

• Switchable load between COIL1 and COIL2 for data transmission from tag to the reader

• Field gap detector for data transmission from the base station to the tag

• ESD protection circuitry

4.2

4.3

Data-rate Generator

The data rate is binary programmable to operate at any data rate between RF/2 and RF/128 or

equal to any of the fixed e5550/e5551 and T5554 bit rates (RF/8, RF/16, RF/32, RF/40, RF/50,

RF/64, RF/100 and RF/128).

Write Decoder

This function decodes the write gaps and verifies the validity of the data stream according to the

Atmel e555x write method (pulse interval encoding).

4863A–RFID–07/05

1 234 5 6 7...28

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