DEMO90121DA Melexis Inc, DEMO90121DA Datasheet - Page 12

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DEMO90121DA

Manufacturer Part Number
DEMO90121DA
Description
KIT DEMO RFID DOOR ACCESS
Manufacturer
Melexis Inc
Type
RFID (Radio Frequency Identification)r
Datasheet

Specifications of DEMO90121DA

Contents
Reader Board, Antenna Board, 3 tag cards, Battery, Battery cable, Software and Documentation
For Use With/related Products
MLX90121
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
The ISO15693 protocol, mode 1 out of 256, is implemented using three symbols. Start of frame (SOF),
end of frame (EOF) and pulses encoding result of the combination of these three symbols.
Note
The ISO14443 -B protocol is implemented with only two symbols. This allows fast addressing with only
one CK pulse.
Time Reference Setup
The time reference is defined in the EncoderTimeRef register. The time reference contains the value of
one bit time. Hence
The bit time is defined by the EncTimeRef parameter. EncTimeRef is an integer value, it is calculated as
follows:
EncTimeRef is coded on 5 bits. This means that Bit_Time_max = 9.44 s and Symbol_Time_max =
75.52 s.
ISO Examples
3901090121
Rev. 009
The position of the symbol Sym1 encodes pulses from 1 to 256. For example: Pulse1 = Sym1 +
255*Sym0 and Pulse45 = 44*Sym0 + Sym1 + 211*Sym0.
Symbol
_
Time
EncTime
8
*
Bit
Re
_
Page 12 of 26
Time
f
 
Bit
1
. 3
39
_
Time
Mhz
13.56MHz RFID Transceiver
 
1
MLX90121
Data Sheet
Sept.-2009

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