28148 Parallax Inc, 28148 Datasheet

RFID DISC STICKER 25MM FOR#28140

28148

Manufacturer Part Number
28148
Description
RFID DISC STICKER 25MM FOR#28140
Manufacturer
Parallax Inc
Datasheet

Specifications of 28148

Rf Type
Read Only
Frequency
125kHz
Features
Passive Tag
Package / Case
25mm Dia
Product
Microcontroller Accessories
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
RFID Reader Module (#28140)
RFID 54 mm x 85 mm Rectangle Tag (#28141)
RFID 50 mm Round Tag (#28142)
Introduction
Designed in cooperation with Grand Idea Studio (http://www.grandideastudio.com/), the Parallax Radio
Frequency Identification (RFID) Reader Module is the first low-cost solution to read passive RFID
transponder tags up to 1¾” - 3” inches away depending on the tag (see list below). The RFID Reader
Module can be used in a wide variety of hobbyist and commercial applications, including access control,
automatic identification,
immobilization.
Parallax, Inc. • RFID Reader Module (#28140) •Updated 02/2006 v1.2
Fully-integrated, low-cost method of reading passive RFID transponder tags
Single-wire, 2400 baud Serial TTL interface to PC, BASIC Stamp
Requires single +5VDC supply
Bi-color LED for visual indication of activity
0.100” pin spacing for easy prototyping and integration
0.14” (3.6mm)
robotics
599 Menlo Drive, Suite 100
Rocklin, California 95765, USA
Office: (916) 624-8333
Fax: (916) 624-8003
navigation, inventory
0.1” (2.5mm)
2.45” (62.2mm)
2.15” (54.5mm)
tracking,
General: info@parallax.com
Technical: support@parallax.com
Web Site: www.parallax.com
Educational: www.stampsinclass.com
®
and other processors
payment
systems,
and
Page 1
car

Related parts for 28148

28148 Summary of contents

Page 1

RFID Reader Module (#28140) RFID Rectangle Tag (#28141) RFID 50 mm Round Tag (#28142) 0.14” (3.6mm) Introduction Designed in cooperation with Grand Idea Studio (http://www.grandideastudio.com/), the Parallax Radio Frequency Identification (RFID) Reader Module is the ...

Page 2

The Parallax RFID Reader Module works exclusively with the EM Microelectronics-Marin SA EM4100-family of passive read-only transponder tags. A variety of different tag types and styles exist with the most popular made available from Parallax. Each transponder tag contains a ...

Page 3

Communication Protocol Implementation and usage of the RFID Reader Module is straightforward. BASIC Stamp 1, 2, and SX28AC/DP code examples (SX/B) are included at the end of this documentation. The RFID Reader Module is controlled with a single TTL-level active-low ...

Page 4

DC Characteristics +5.0V and T = 25ºC unless otherwise noted CC A Parameter Symbol Supply Voltage V CC Supply Current, Idle I IDLE Supply Current, Active I CC Input LOW voltage V IL Input HIGH voltage V ...

Page 5

Optional Tag Information Even though Parallax only carries a Round Tag and a Rectangle Tag the following values were obtained from different tags available in the market. ISO Card: 6.3cm (2.5") +/- 10% World Tag 50mm: 6.8cm (2.7") +/- 10% ...

Page 6

Parallax RFID Reader Module's antenna was designed with a specific inductance and "Q" factor for 125 kHz RFID operation at a tag read distance 1¾” - 3” inches. Example Code The following code examples ...

Page 7

EEPROM Data ]----------------------------------------------------- Tags: EEPROM ("0F0184F20B") EEPROM ("0F01D9D263") EEPROM ("04129C1B43") EEPROM ("0000000000") EEPROM ("0000000000") ' -----[ Initialization ]-------------------------------------------------- Reset: HIGH Enable LOW Latch ' -----[ Program Code ]---------------------------------------------------- Main: LOW Enable SERIN RX, T2400, ($0A) SERIN RX, T2400, ...

Page 8

GOTO Main END ' ========================================================================= ' ' File....... RFID.BS2 ' Purpose.... RFID Tag Reader / Simple Security System ' Author..... (c) Parallax, Inc. -- All Rights Reserved ' E-mail..... support@parallax.com ' Started.... ' Updated.... 07 FEB 2005 ' ' {$STAMP ...

Page 9

SevenBit CON $2000 Inverted CON $4000 Open CON $8000 Baud CON T2400 #SELECT $STAMP #CASE BS2, BS2E TmAdj CON $100 FrAdj CON $100 #CASE BS2SX TmAdj CON $280 FrAdj CON $066 #CASE BS2P TmAdj CON $3C5 FrAdj CON $044 #CASE ...

Page 10

Program Code ]---------------------------------------------------- Main: LOW Enable #IF __No_SPRAM #THEN SERIN RX, T2400, [WAIT($0A), STR buf\10] #ELSE SERIN RX, T2400, [WAIT($0A), SPSTR 10] #ENDIF HIGH Enable Check_List: FOR tagNum = 1 TO LastTag FOR idx = ...

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