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HTMS8301FUG/AM Arkusz danych(PDF) 10 Page - NXP Semiconductors

Numer części HTMS8301FUG/AM
Szczegółowy opis  ISO 18000 transponder IC
PDF  44 Pages
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Producent  NXP [NXP Semiconductors]
Strona internetowa  http://www.nxp.com
Logo NXP - NXP Semiconductors

HTMS8301FUG/AM Arkusz danych(HTML) 10 Page - NXP Semiconductors

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184430
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2010. All rights reserved.
Product data sheet
PUBLIC
Rev. 3.0 — 18 March 2010
184430
10 of 44
NXP Semiconductors
HITAG µ
ISO 18000 transponder IC
10.1.2 Data rate and data coding
The RWD to HITAG µ ISO 18000 transponder IC communication uses Pulse Interval
Encoding. The RWD creates pulses by switching the carrier off as described in Figure 4.
The time between the falling edges of the pulses determines either the value of the data
bit ’0’, the data bit ’1’, a code violation or a stop condition.
Assuming equal distributed data bits ’0’ and ’1’, the data rate is in the range of about
5.2 kbit/s.
[1]
TC...Carrier period time (1/125kHz = 8 μs nominal)
Fig 4.
Reader to HITAG µ ISO 18000 transponder IC: Pulse Interval Encoding
Table 6.
Data coding times [1]
Meaning
Symbol
Min
Max
Carrier off time
TF1
4
× Tc
10
× Tc
Data “0” time
TFd0
18
× Tc
22
× Tc
Data “1” time
TFd1
26
× Tc
30
× Tc
Code violation time
TFcv
34
× Tc
38
× Tc
Stop condition time
TFsc
≥ 42 × Tc
n/a
001aaj827
carrier on
TF1
carrier off
TFsc
"stop condition''
carrier on
TF1
carrier off
TF1
TFcv
"code violation''
carrier on
TF1
carrier off
TF1
TFd1
data "1''
carrier on
TF1
carrier off
TF1
TFd0
data "0''



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