28140 Parallax Inc, 28140 Datasheet
28140
Specifications of 28140
Related parts for 28140
28140 Summary of contents
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... Requires single +5VDC supply Bi-color LED for visual indication of activity 0.100” pin spacing for easy prototyping and integration Parallax, Inc. • RFID Reader Module (#28140) •Updated 02/2006 v1.2 599 Menlo Drive, Suite 100 General: info@parallax.com Rocklin, California 95765, USA Technical: support@parallax.com Office: (916) 624-8333 Web Site: www ...
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... GND G Note: Type Input Output Power Ground Parallax, Inc. • RFID Reader Module (#28140) •Updated 02/2006 v1.1 Function System power, +5V DC input. Module enable pin. Active LOW digital input. Bring this pin LOW to enable the RFID reader and activate the antenna. ...
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... This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operation listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability. Parallax, Inc. • RFID Reader Module (#28140) •Updated 02/2006 v1.1 Unique ID Unique ID ...
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... Rectangle Tag (#28141) Round Tag (#28142) Actual tag dimensions may vary. Contact Parallax for specific information. Parallax, Inc. • RFID Reader Module (#28140) •Updated 02/2006 v1.1 Test Specification Conditions Min. --- 4.5 ...
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... There really is no such thing as a "typical" RFID tag. The read range of a tag ultimately depends on many factors: the frequency of RFID system operation, the power of the reader, and interference from other RF devices. Balancing a number of engineering trade-offs (antenna size v. reading distance v. power v. Parallax, Inc. • RFID Reader Module (#28140) •Updated 02/2006 v1.1 Page 5 ...
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... SYMBOL tagNum = B10 SYMBOL pntr = B11 SYMBOL char = B12 Parallax, Inc. • RFID Reader Module (#28140) •Updated 02/2006 v1.1 ' low = reader on ' serial from reader ' speaker output ' lock/latch control ' 3 tags RFID bytes buffer ' from EEPROM table ' pointer to char in table ' character from table ...
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... GOTO Main Tag_Found: DEBUG #tagNum, CR HIGH Latch SOUND Spkr, (114, 165) LOW Latch Parallax, Inc. • RFID Reader Module (#28140) •Updated 02/2006 v1.1 ' valid tags ' space for other tags ' turn of RFID reader ' lock the door! ' activate the reader ' wait for header ...
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... T1200 CON 3313 T2400 CON 1646 T4800 CON 813 T9600 CON 396 T19K2 CON 188 TMidi CON 108 T38K4 CON 84 #ENDSELECT Parallax, Inc. • RFID Reader Module (#28140) •Updated 02/2006 v1.1 ' low = reader on ' serial from reader ' speaker output ' lock/latch control Page 8 ...
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... Johnston", CR, 0 Name2 DATA "Dick Miller", CR, 0 Name3 DATA "Mary Evans", CR -----[ Initialization ]-------------------------------------------------- Reset: HIGH Enable LOW Latch Parallax, Inc. • RFID Reader Module (#28140) •Updated 02/2006 v1 1.0 (time adjust 1.0 (freq adjust 0.265 ' x 1 0.665 ' x 6. 0.166 ' does module have SPRAM? ...
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... READ idx, char IF (char = 0) THEN EXIT DEBUG char idx = idx + 1 LOOP RETURN Parallax, Inc. • RFID Reader Module (#28140) •Updated 02/2006 v1.1 ' activate the reader ' wait for hdr + ID ' deactivate reader ' scan through known tags ' scan bytes in tag ' get tag data from table ...