MCRF450 Просмотр технического описания (PDF) - Microchip Technology

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MCRF450

13.56 MHz Read/Write Passive RFID Device

Microchip Technology 

MCRF450/451/452/455

3.0 BLOCK DIAGRAM

The device contains four major sections. They are:

Analog Front-End, Detection/Encoding, Read/Write

Anti-collision Logic and Memory sections. Figure 3-1

shows the block diagram of the device.

FIGURE 3-1:

BLOCK DIAGRAM

ANALOG FRONT-END SECTION

DETECTION/ENCODING

SECTION

MEMORY SECTION

High/Low Voltage

Regulator

To Memory

(High Voltage)

VDD

Fast Mode

Detuning Circuit

Oscillator

Demodulator (Detector)

PPM

Decoder

Command

Decoder

VDD

Power-on Reset

(POR)

CRC/Parity Generator and Checker

To Anti-collision

Command Controller

(VDD)

Clock Generator

Data Encoder

Main Clock

High Voltage (HV)

From

High Voltage

Regulator

Memory Array

Registers

Modulation

READ/WRITE Anti-collision SECTION

VDD from POR

Anti-collision Command Controller

Time Slot

Counter

Time Slot Generator

(TC, TSMAX, Tag ID)

DS40232H-page 12

 2003 Microchip Technology Inc.

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