參數(shù)資料
型號: HTMS1001FTK
廠商: NXP Semiconductors N.V.
元件分類: 通信及網(wǎng)絡
英文描述: HITAG ?; Transponder IC
封裝: HTMS1001FTB/AF<sot1122 (XSON3)|<<http://www.nxp.com/packages/sot1122.html<1<Always Pb-free,;HTMS1001FTK/AF<SOT899-1 (HVSON2)|<<http://www.nxp.com/packages/SOT899-1.html&l
文件頁數(shù): 18/58頁
文件大?。?/td> 844K
代理商: HTMS1001FTK
152931
NXP B.V. 2010. All rights reserved.
Product data sheet
PUBLIC
Rev. 3.1 — 21 January 2010
152931
18 of 58
NXP Semiconductors
HITAG μ
Transponder IC
9.3.2
Data rate and data coding
The RWD to HITAG μ transponder IC communication uses Pulse Interval Encoding. The
RWD creates pulses by switching the carrier off as described in
Figure 7
. 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.
Table 10.
Meaning
Carrier off time
Data “0” time
Data “1” time
Code violation time
Stop condition time
[1]
T
C...
Carrier period time (
1/
134.2
kHz = 7.45
μ
s nominal)
Fig 7.
Reader to HITAG μ transponder IC: Pulse Interval Encoding
Data coding times
[1]
Symbol
T
F1
T
Fd0
T
Fd1
T
Fcv
T
Fsc
Min
4
×
T
c
18
×
T
c
26
×
T
c
34
×
T
c
42
×
T
c
Max
10
×
T
c
22
×
T
c
30
×
T
c
38
×
T
c
n/a
001aaj827
carrier on
T
F1
carrier off
T
Fsc
"stop condition''
carrier on
T
F1
carrier off
T
F1
T
Fcv
"code violation''
carrier on
T
F1
carrier off
T
F1
T
Fd1
data "1''
carrier on
T
F1
carrier off
T
F1
T
Fd0
data "0''
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